Articles for category Nachwuchsförderung


17 Mar 2021

First HOT-TOPIC workshop focusses on plant RNA

RNAs in plants will be the topic of the first Eduard Strasburger HOT-TOPIC workshop. Under the title It’s in your RNA - Emerging new techniques to unravel transcriptional and post-transcriptional regulation in plants on a global scale and funded by the DBG the conference for early career plant scientists will take place hopefully in presence at the Centre for Interdisciplinary Research at Bielefeld University on 18th and 19th November 2021. As soon as invited speakers are confirmed, and programme as well as website are established / registration is possible the organizers Dr. Marlene Reichel and Dr. Elisabeth Fitzek-Campbell (both from Bielefeld University) will inform you here.

21 Jan 2021

DBG has awarded prizes for the best Master theses

The awardees received the deeds for their genteic, physiologic or evolution-related research projects. Photos: some of the awardees with the contact persons of the universities

Sorry, in German only

Auch wenn  die Verleihungen und die Übergabe der Urkunden dieses Jahr Pandemie-bedingt auf Distanz und nicht bei Abschlussfeiern stattfanden, konnte die DBG wieder mehrere herausragende Master-Abschlussarbeiten in den Pflanzenwissenschaften auszeichnen. Die vielfältigen Arbeiten aus den 12 Hochschulen, von denen die DBG Mitteilungen erhielt, thematisierten: 

  • CAM-Photosynthese und physiologische Charakteristika
  • Pflanzenmerkmale und Attraktivität für bestäubende Insekten
  • wie eine Glykosilierung die Geißel-Bewegung beeinflusst
  • Evolution der RNA im Moos Physcomitrium patens
  • Tetrapyrrol-Synthese
  • in vivo-Analyse der Protein Translokation in Peroxisomen
  • physiologische Stressantwort in Synechocystis
  • neue Modellorganismen zur Erforschung der frühen Landpflanzen-Evolution
  • wie Genom-Duplikationen und wiederkehrende Hybridisierung die Artbildung beeinflusst
  • zwei neue Methoden: neu etabliertes optogenetisches System, Genom-Editierung mittels CRISPR/Cas9 in der Grünalge Volvox carteri
  • wie man kontinuierlich Wasserstoff produzieren könnte, wenn man verschiedene Organismen geschickt miteinander kombiniert.

Die DBG dank den Kontaktpersonen an den Universitäten, für Ihr Engagement bei der Auswahl der besten Master-Arbeiten des vergangenen Jahres, die in diesem Jahr mehrheitlich an weibliche Forschende verliehen wurden.

Zu den Titeln, Preisträger*innen, Bildern und Abstracts

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Elena Lesch (Bonn University)

PPR78 is responsible for C-to-U RNA editing in the model moss Physcomitrium patens at two sites: cox1eU755SL and rps14eU137SL. The editing factor remains conserved among mosses even when editing is not needed anymore because a U is already present in the RNA and when editing is completely absent or heavily reduced as here exemplarily shown for Anomodon attenuatus. Editing at another site, ccmFNeU1465RC, was discovered and may explain the retention of functional PPR78 orthologs in these species. Hypnum cupressiforme lacking editing at all sites may be a first candidate where PPR78 is absent. Introducing PPR78 and its targets into the bacterium Escherichia coli led to specific C-to-U editing at all three sites. Graph: Elena Lesch

Elena Lesch's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Rheinische Friedrich-Wilhelms-Universität Bonn in the year 2020.

Title: Evolution of moss RNA editing factors and their functions tested in a variety of model systems

The expression of moss RNA editing factors in evolutionary distant model species allows new insights into their mode of operation and into the co-evolution with their targets.

Plant RNA editing induces site-specific conversion of cytidines (C) into uridines (U) in plant chloroplasts and mitochondria. RNA-binding pentatricopeptide repeat (PPR) proteins have the key role of binding to the RNA targets and converting Cs into Us. PPR78 is such a nuclear encoded C-to-U RNA editing factor that targets two mitochondrial RNA editing sites in the cox1- and in the rps14-mRNA in the model moss Physcomitrium patens. Many other moss species were surveyed for the presence of PPR78 and it was found to be conserved even in species, where editing is extremely reduced or not needed at all because Us are already present at these positions (corresponding to thymidine in the genes at the DNA level; see figure). Suspecting a yet unrecognized target site for PPR78 we could successfully predict bioinformatically and subsequently confirm a further editing target in the ccmFN RNA. Moreover, we succeeded to transfer PPR78 into the bacterium Escherichia coli, which was recently established by us as a bacterial model system for RNA editing (Oldenkott et al.[1]).  We found that PPR78 could not only perform C-to-U conversions at the previously known editing sites in cox1 and rps14 but also at the newly identified site in ccmFN. Altogether the new data are promising for future attempts to specifically introduce changes to RNA transcript sequences in diverse organisms.

[1] Oldenkott, B., Yang, Y., Lesch, E., Knoop, V., Schallenberg-Rüdinger, M. (2019): Plant-type pentatricopeptide repeat proteins with a DYW domain drive C-to-U RNA editing in Escherichia coli. Commun Biol 2, 85. https://doi.org/10.1038/s42003-019-0328-3

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Elena Lesch conducted this work at the Institute of Cellular and Molecular Botany in the „Molecular Evolution“ lab under the supervision of Prof. Dr. Volker Knoop and Dr. Mareike Schallenberg-Rüdinger.

Johanna Wiedener (University Leipzig)

Schematic illustration of a mixed species approach of Synechocystis sp. PCC 6803 (Syn6803) and a heterotrophic aerobic bacterium to remove oxygen from the reaction to enable hydrogen production by the cyanobacterium (top) and co-cultivation as a biofilm in a capillary reactor (bottom). Graphic and photo: Johanna Wiedener

Johanna Wiedener's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Leipzig University in the year 2020.

Title: Investigation of a mixed species cultivation concept for a continuous photosynthesis-driven hydrogen production

A mixed species cultivation using a photosynthetic cyanobacterium and an oxygen consuming heterotrophic bacterium enables light-driven and continuous hydrogen production from water.

Hydrogen is considered as the energy carrier of the future. In addition to a technical generation of hydrogen by electrolysis of water using renewable energies (solar/wind power), biological approaches are also possible. Promising are cyanobacteria, which also can split water by the means of light to ‘’win’’ electrons for biosynthesis. This process is known as oxygenic photosynthesis. In cyanobacteria the electrons obtained from water splitting can alternatively "flow" into the enzymatic synthesis of hydrogen.

The present work deals with the light-driven hydrogen production of the model strain Synechocystis sp. PCC 6803 – particularly to the dilemma that the hydrogenases necessary for hydrogen production, obtain electrons from photosynthesis but are at the same time inactivated by the oxygen also generated during photosynthesis. In this master thesis, the milieu was kept anaerobic for the first time by co-cultivating Synechocystis with a heterotrophic bacterium. Thereby a hydrogen synthesis was achieved that could be measured over several hours. It could be proven that the electrons for hydrogen synthesis indeed originate from photosynthetic water splitting. Furthermore, the observations could also be transferred to an alternative cultivation concept: a bacterial biofilm. 'Multi-species' biofilms represent the natural lifestyle of microorganisms and offer the advantage of improved tolerance to unfavorable environmental conditions. From a technical point of view, they allow a long-term, stable cultivation of microorganisms. If sufficient nutrient sources are present, they can generate all their needed elements by themselves and are also able of self-regeneration. In biofilms a significant hydrogen production was documented even after several weeks. It was proven that it is in fact the cyanobacterial partner that produces this hydrogen. Although many problems still need to be solved, this work has taken the biological approach of hydrogen production a significant step towards application.

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Johanna Wiedener conducted this work at the Helmholtz-Centre for Environmental Research (UFZ) Leipzig in the department Solar Materials of Prof. Andreas Schmid under supervision of PD Dr. Stephan Klähn.

Mara Schultz (Rostock University)

Due to the current travel restrictions, Mara Schultz received her deed not from Prof Birgit Piechulla at Rostock University, but from DBG's president, Prof Andreas Weber, at Heinrich-Heine-University Düsseldorf, Schultz's new working place. Photo: private

Mara Schultz's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Rostock University in the year 2020.

Title: The role of the small protein HliR1 in Synechocystis sp. PCC 6803 during high light stress

Schultz characterized the physiological role of the recently annotated small protein HliR1 and detected its participation in the high light stress response in Synechocystis sp. PCC 6803.

The small protein HliR1 was newly annotated by Baumgartner et al. (BMC Microbiol 28:2016) in the genome of Synechocystis, where hlir1 is located in front of the gene for superoxide dismutase (SOD). SOD is involved in the removal of reactive oxygen species in the cell, which occur in particular in the case of strong light stress.

To analyze the physiological role of HliR1 in Synechocystis, several mutants were available in which the protein-coding or RNA-coding part of hliR1 was deleted. Furthermore, a strain in which HliR1 was expressed in the mutant was examined. Schultz characterized these strains phenotypically, biochemically and molecular biologically with regard to growth under different conditions. In addition, I aimed to detect interactions of HliR1 with other proteins.

The physiological investigations showed that HliR1 plays an important role during high light stress. The mutant with the protein-coding sequence deleted could not grow in strong light, while the expression of hliR1 in this mutant abolished the phenotype. However, neither changes in the SOD activity nor an HliR1-SOD interaction could be detected that would have explained this phenotype. Investigation of protein-protein interactions suggests that HliR1 may interact with various proteins involved in building and repairing photosystem II. This finding suggests that HliR1 may play a role in the repair of photosystem II under high light stress.

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Mara Schultz conducted this work at the Institute for life sciences in the working group of Prof. Dr. Martin Hagemann.

2020

In the year 2020 DBG's representatives at the universities evaluated master theses in plant sciences. The following persons received the award (in alphabetical order):

Claudia Banse (Humboldt Universität Berlin)
Hämbindung an der GBP sorgt für Feedback-Regulation in der Tetrapyrrolsynthese

Susanne Elisabeth Bleser (Johannes Gutenberg-Universität Mainz)
Characteristics of CAM-photosynthesis and anatomic-physiological features of leaves in Aeonium (Crassulaceae)

Nicole Graumann (Universität Bielefeld)
Gene editing mittels CRISPR/Cas9-vermittelter Mutagenese in der Grünalge Volvox carteri

Levke Valena Höche (Christian-Albrechts-Universität zu Kiel)
The combined effects of population origin and inbreeding on plant traits attracting pollinating insects
more in the -> summary with images

Lara Höpfner (Westfälische Wilhelms-Universität Münster)
Function of protein N-glycosylation in flagella mediated cell gliding
more in the -> summary and image

Johanna Knab (Friedrich-Alexander-Universität Erlangen-Nürnberg, FAU)
Analysis of CNGCs in Physcomitrium patens and generation of optogenetic lines and a pH marker for live-cell imaging
more in the -> summary with image

Joelle Kröll (Universität Innsbruck)
Allopolyploidy, introgression and morphological differentiation in the Pyrenean endemic Saxifraga pubescens
more in the -> summary with images

Elena Lesch (Rheinische Friedrich-Wilhelms-Universität Bonn)
Evolution of moss RNA editing factors and their functions tested in a variety of model systems
more in the -> summary with image

Fabian Munder (Universität Hamburg)
Elucidating the Mechanism of Protein Translocation into Peroxisomes: Biophysical, Structural and in vivo Characterization of two Peroxisomal Biogenesis Proteins from Arabidopsis thaliana

Mara Schultz (Universität Rostock)
Die Rolle des Proteins HliR1 in Synechocystis sp. PCC 6803 bei der Stressantwort bei Starklichtverhältnissen
more in the -> summary with image

Nora Stingl (Philipps Universität Marburg)
Successful cultivation of the new model organisms Chara braunii, Spirogyra pratensis and Mougeotia scalaris in the lab and discovery of different growth behavior of various Anthoceros agrestis strains
more in the -> summary

Johanna Wiedener (Universität Leipzig)
Investigation of a mixed species cultivation concept for a continuous photosynthesis-driven hydrogen production
more in the -> summary with two images

Lara Hoepfner (Münster University)

Flagella mediated adhesion of Chlamydomonas reinhardtii to a solid surface. Taking advantage of TIRF microscopy both dynamics can be imaged and analyzed (down). Graphic: Lara Hoepfner

Lara Hoepfner's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Westfälische Wilhelms-Universität Münster in the year 2020.

Title: Function of protein N-glycosylation in flagella mediated cell gliding

Altered N-glycan maturation of flagella membrane proteins impacts adhesion to solid surfaces however does not impede the cells gliding ability.

The biflagellate Chlamydomonas reinhardtii is a well-known model organism in research on cilia and flagella. Via their two flagella, cells are able to adhere to and glide along solid surfaces thanks to N-glycosylated membrane proteins such as flagella membrane glycoprotein FMG1-B.

Taking advantage of mass spectrometry and TIRF microscopy mutants with altered N-glycosylation were analyzed regarding changes in their flagella proteome as well as their ability to adhere and glide. Further the particular role of FMG1-B in respective dynamics was examined by characterization of two FMG1-B knock down mutants.

Altered N-glycosylation decreases the adhesion force of flagella to a surface, however, this has no impact on flagella protein targeting or the ability to glide. Further it could be shown that FMG1-B is not the only N-glycosylated protein involved in flagella membrane adhesion and gliding in contrast to the current model.

In future further N-glycosylation mutants will be analyzed regarding their ability to adhere and glide and the role of further candidate proteins involved in adhesion and gliding besides or instead of FMG1-B will be analyzed.

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Lara Hoepfner conducted this work at the institute for plant biochemistry and biotechnology in the working group of Prof. Dr. Michael Hippler.

Johanna Knab (Universität Erlangen-Nürnberg)

Confocal optical sections through a Physcomitrium patens protonemal cell accumulating a ChR-2-XXL-GFP fusion protein in the plasma membrane (green). Chloroplasts display red autofluorescence. Scale bar: 15 μm. Image: Johanna Knab

Johanna Knab's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) in the year 2020.

Title: Analysis of CNGCs in Physcomitrium patens and generation of optogenetic lines and a pH marker for live-cell imaging

Local Ca2+-import trough CNGC channels appears to modulate tip growth in moss (Physcomitrium patens) protonemata and can be investigated using a newly established optogenetic system.

In plants, "cyclic nucleotide-gated channels" (CNGCs) regulate numerous biological processes ranging from development to tip growth and immune responses. Eight CNGCs have been identified in the moss Physcomitrium patens, whose functions are largely unexplored. By contrast, in the model plant Arabidopsis thaliana essential functions of different CNGCs in the tip growth of root hairs and pollen tubes have already been established. In order to investigate the role of CNGCs in tip growth in moss, P. patens CNGC knock-out lines were generated using CRISPR/Cas methodology. Four different cngc single KO lines, two cngc double KO lines and one cngc triple KO line were established. Despite extensive efforts, it was not possible to generate KO lines disrupted in the expression of the remaining four CNGCs, indicating essential functions of these channels in moss. Investigation of the established cngc KO lines has shown that three P. patens CNGCs in fact modulate tip growth in protonemata. cngc-b, cngc-c, and cngc-h single KO lines, as well as two of the cngc double KO lines, showed significantly increased elongation of protonemal cells. This effect was particularly pronounced in the cngc-b / cngc-c double knockout line, which indicates additive functional interactions between CNGCc and CNGCb.

Furthermore, experiments were performed to establish an optogenetic system in P. patens. Optogenetics is a cell biological method, which enables the control of processes in living cells by light pulses using light-sensitive proteins. In cooperation with Prof. Dr. Nagel from the University of Würzburg, transgenic P. patens lines were generated expressing a recombinant channel rhodopsin tagged with a green fluorescent protein (ChR-2-XXL::GFP). Similar channel rhodopsins have already been used successfully in neurobiology to generate light-induced action potentials. Channel rhodopsin-2 is a light-controlled cation channel from the unicellular green alga Chlamydomonas reinhardtii. On the basis of this protein, Prof. Dr. Nagel developed the ChR-2-XXL channel, which allows blue-light-controlled local stimulation of Ca2+ import through the plasma membrane. This channel was successfully expressed for the first time in P. patens, and was found to be targeted to plasma membrane of protonemata cells, an important prerequisite for its function in Ca2+ import. In addition, a dioxygenase fused to a chloroplast targeting sequence was demonstrated to be imported into chloroplasts, where this enzyme can synthesize retinal using ß-carotene as a precursor. Retinal is essential for the function of the ChR-2-XXL channel. With this system it should now be possible to examine effects on tip growth of local cell depolarization triggered by blue light stimulation.

In the “Cell Biology Divison” at FAU, the role of Rac/Rop-dependent signal cascades in the control of tip growth in plants has been investigated for many years. The work described here represents an excellent basis for the future investigation of functional interactions between Rac/Rop- and Ca2+-dependent signal cascades in the moss P. patens.

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Johanna Knab conducted this work in the FAU Division of Cell Biology under the supervision of Dr. Maria Ntefidou in the team of Prof. Dr. Benedikt Kost.

Joelle Kröll (Innsbruck University)

The two until now as subgernera adressed forms should be handled as two distinct species. The left, S. (pubescens subsp.) pubescens, occurs in the eastern Pyrenees, along the more or less continuous mountain range south and east of the Cerdanya/Cerdagne valley. The rightS. (pubescens subsp.) iratiana occurs on the highest summits and crests of the central and western Pyrenees. Photos: Pau Carnicero

Joelle Kröll's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Innsbruck University in the year 2020.

Title: Allopolyploidy, introgression and morphological differentiation in the Pyrenean endemic Saxifraga pubescens of awarded thesis

Multiple data sources unravel inconspicuous diversity in a Pyrenean high mountain endemic: from one to two species, genome duplications and recurring hybridization

Hybridization is an important evolutionary force in plants, which can either lead to reduction of differentiation through introgressive hybridization or increase in diversity due to the appearance of a new evolutionary entity through hybrid speciation. For the latter to take place, hybrids need to overcome two major challenges, i.e. hybrid sterility and backcrossing with the parental lineages. One way to overcome both of these problems is allopolyploidy. Recurrent hybridization with co-occurring species has been reported in the Pyrenean endemic Saxifraga pubescens, but its evolutionary consequences as well as its link to polyploidy remain to date uncertain. Although two subspecies with allopatric distributions are recognised, i.e. S. pubescens subsp. pubescens and S. pubescens subsp. iratiana, some contradictory reports indicate overlapping distributions. Since the species is protected in some areas both in Spain and in France, it is necessary to clarify the intraspecific systematics of S. pubescens. For this purpose, we integrate morphological, relative genome size and molecular data from RADseq and plastid DNA sequencing to infer the evolutionary and biogeographical history of the species, with special focus on hybridization and polyploidy and to propose a congruent systematics framework. We observe both occasional occurrences of hybrids in populations of S. pubescens as well as entirely hybrid populations. Homoploid hybridization seems to generate the occasional hybrids, while the entirely hybrid populations consist of allopolyploids, which indicates fertility of the hybrids and their potential to create hybrid lineages (and eventually species). Morphology allows the proper identification of the two subspecies as well as the hybrids, with the exception of individuals with imbalanced introgression. In addition, the molecular data resolve both subspecies as monophyletic, but the species itself as polyphyletic and indicate that the two subspecies are consistently well-differentiated entities, and should be recognised as two separate species.

The Master thesis of Joelle Kröll was published (in : https://diglib.uibk.ac.at/ulbtirolhs/download/pdf/5341778?originalFilename=true

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Joelle Kröll conducted this work at the Institute for Botany in the working group Evolutionary Systematics of Univ.-Prof. Mag. Dr. Peter Schönswetter and Ass. Dr. Pau Carnicero.

Levke Valena Höche (Kiel University)

Graphical abstract: We recorded the combined effects of inbreeding, plant sex and geographic origin on spatial flower traits and floral scent of Silene latifolia. Graph: Levke Valena Höche

Levke Valena Höche's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Christian-Albrechts-Universität zu Kiel in the year 2020.

Title: The combined effects of population origin and inbreeding on plant traits attracting pollinating insects

Inbreeding can have a negative impact on floral scent production and spatial flower traits. The magnitude of this effect strongly depends on the sex of plant individuals and the geographic origin of a population.

The attractiveness of a flower towards pollinators is determined by a combination of spatial and olfactory traits. Inbreeding can negatively impact these traits, and its effect can vary within a population between male and female plants, and among populations from different geographical origins.

We recorded differences in spatial and olfactory floral traits in outcrossed and inbred, female and male individuals of the dioecious plant Silene latifolia from eight European and eight North American populations. Additionally, visitation rates by crepuscular pollinators were quantified.

Inbreeding reduced the number and size of the flowers as well as the amount of lilac aldehydes that are essential for chemical communication with crepuscular moths. This effect was partially more pronounced in female than male individuals and varied between populations of different origins. However, this effect was not reflected in the pollinator visitation rates, which had only been investigated during a small timeframe in late summer for logistical reasons. Our results support that inbreeding has the potential to lessen the attractivity of a flower towards pollinating insects, and that sex-specific selection and the evolutionary history of a population shape the underlying genetic architecture.

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Levke Valena Höche conducted this work at the Institute for Ecosystem Research / Department Geobotany, supervised by Dr. Karin Schrieber.

Nora Stingl (Marburg University)

Nora Stingl's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Philipps Universität Marburg in the year 2020.

Title: Establishment and optimization of new model organisms to study early land plant evolution

Stingl successfully established three new model organisms and optimised their cultivation conditions for future studies on the conquest of land by plants.

The establishment of new model organisms is crucial to study the water to land transition of plants, which set the fundament to nature how we know it. It is widely accepted that one group from the charophyte algae, more accurate from the ZCC paraphylum, gave rise to the ancestor of land plants. Since no model organisms have yet been established in this group, three organisms were selected as potential model organisms: Chara braunii, Spirogyra pratensis and Mougeotia scalaris. Within this work protocols for laboratory cultivation of all three organisms could be developed. Additionally, sexual reproduction of C. braunii and S. pratensis was successfully induced repeatedly and a protocol for germination of C. braunii oospores was established.

Within the land plants the bryophytes are considered sister taxons of the vascular plants and the hornwort Anthoceros agrestis is already established as a model organism. In this thesis, studies on in vitro cultivation were performed and different growth and germination behavior between axenic and non-axenic cultures could be observed.

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Nora Stingl conducted this work at the department of biology in the lab of Prof. Dr. Stefan A. Rensing.

Melanie Kastl (Köln University)

Melanie Kastl's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Köln University in the year 2019.

Title: Functional characterization of the Ustilago maydis organ-specific effectors: UMAG05306 and UMAG11060

Two effectors of Ustilago maydis, the causative agent of corn smut disease, were localized in planta and their (putative) targets were identified and described.

Ustilago maydis parasitizes all aerial parts of the maize plant by inducing tumour formation. In order to establish biotrophy, U. maydis secretes effectors that inhibit the plant defence responses and modulate the host metabolism. Co-immunoprecipitation experiments and localization assays with fluorescent labelled effectors were performed to functionally characterize two U. maydis effectors including UMAG5306 and UMAG11060. We have shown that both effectors are secreted during host colonization and involved in fungal virulence. Furthermore, interaction studies revealed that UMAG05306 interacts and/or modulate with plant cytoskeleton, while UMAG11060 interacts with host defence component to suppress immunity. These findings will bring more insight in how fungi interfere with the plant immune system and to understand the mechanism of susceptibility and resistance.

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Melanie Kastl conducted this work at the Institute of Botany/ Chair of Terrestrial Microbiology in the group of Prof. Dr. Gunther Döhlemann.

22 Mar 2020

Strasburger-Workshop: Diversity of chemical and molecular signaling networks in plant-microbe interactions

On the second day, participants hiked to Drachenfels, 321 m.a.s.l.. Photo: Sebastian Klenner

Sorry, report in German only

Ihre Ergebnisse und Forschungsarbeiten über die vielfältigen Interaktionen zwischen (Nutz-)Pflanzen und Mikroben tauschten knapp 20 angehende Wissenschaftler*innen aus drei Ländern im Februar in Königswinter aus. Die Tagung thematisierte sowohl Symbiosen als auch Pflanzen-Pathogene. Eine externe Vortragende berichtete über Jobs außerhalb von Universtäten und ein Mitmach-Workshop ermunterte die Teilnehmenden über Chancen und Risiken der öffentlichen Kommunikation ihrer Forschungsthemen nachzudenken. Einig war man sich, dass es ein großes Interesse an der Interaktions-Forschung geben sollte, da diese dazu beiträgt, anwenderfreundliche Lösungen für den Erhalt der Pflanzengesundheit und der Ertragsmengen zu bieten. Die fünf Organisator*innen des Eduard-Strasburger-Workshops der DBG von angehenden Nachwuchskräften der Sektion für Interaktionen für andere junge Pflanzenwissenschaftler*innen fassen die Veranstaltung zusammen.

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Cathrin Manz (Philipps-Universität Marburg)

Cathrin Manz's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Philipps-Universität Marburg in the year 2019.

Title: "Diversity assessment of the ectomycorrhizal genus Russula in tropical montane forests in Panama"

For the first time Manz investigated the diversity of Russula species (“brittlegills”) in the mountain rainforests of Panama. More than 45 species were discovered for the first time for Panama with many of them new to science.

The diversity of ectomycorrhizal fungi in the tropics is still largely underexplored, even though they constitute a key component of tropical montane forest ecosystems. In this study, 106 collections of the genus Russula (“brittlegills”) were collected in Chiriquí, Panama and described as fresh fruiting bodies. The samples were analysed with phylogenetic methods using the universal fungal barcode ITS. The resulting phylogenetic tree revealed a total number of 90 Russula species in Panama of which 47 species were newly recorded for this country. Among these samples are many putatively new species. A selection of four new Russula species from subsection Roseinae were analysed morphologically by light and scanning electron microscopy in the context of the master thesis. Five patterns for ectomycorrhizal partners and geographic distribution were revealed. Facing habitat loss and climate change, it is today more than ever necessary to collect and store specimens with associated data and to openly share these resources. Otherwise many species will become extinct unnoticed.

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Cathrin Manz conducted this work at the Department of Biology in the Research group mycology by Karl-Heinz Rexer.

20 Feb 2020

#SciComm Award for Robert Hoffie

Robert Hoffie, is doing a PhD on Braley at the IPK and. Photo: Iris Koeppel

Robert Hoffie, who tweets as @ForscherRobert on Twitter received the Section's first award for excellent science communication on 13th February 2020.

Sorry, futher details available in German only.

Erstmals haben wir unseren neuen Preis für Wissenschaftskommunikation verliehen. Die Auszeichnung ging an Robert Hoffie, Doktorand am Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung in Gatersleben (IPK). Als @ForscherRobert engagiert sich der Pflanzenforscher in Sozialen Medien, erklärt geduldig den Stand der Forschung über moderne Methoden in der Pflanzenforschung und scheut - wenn es nötig ist - auch nicht die Auseinandersetzung mit Politikern.
„Wenige andere Pflanzenwissenschaftler sind so engagiert in den sozialen Netzwerken wie Robert Hoffie“, sagte Prof. Dr. Stefan Rensing, Sprecher der Sektion. Er wünsche sich mehr Wissenschaftler wie Robert Hoffie, die unsere Themen in die Öffentlichkeit tragen und unsere Sichtbarkeit erhöhen.

Die Auszeichnung verlieh die Sektion am 13. Februar, während der jährlichen Konferenz Molecular Biology of Plants in Dabringhausen (Nordrhein-Westfalen). „Der Preis ist für mich Motivation und Bestätigung zugleich“, erklärte Robert Hoffie. Denn der aktuelle Stand der Wissenschaft sei das Beste, was wir haben, um zu fundierten Einschätzungen zu kommen. "Worauf, wenn nicht darauf, sollen wir unsere Einschätzungen denn künftig sonst stützen?“ fragt sich der 28-Jährige. Zwar könne die Wissenschaft nicht die Politik ersetzen, werde aber selbst immer mehr zu einem gesellschaftlichen Akteur.

Quelle: IPK beim idw

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28 Jan 2020

DBG honours best plant science master theses

Prof. Dr. Christian Wirth (supervisor of the master thesis), awardee Hellen Bellasus, Ronny Richter (co-supervisor of the master thesis), Prof. Dr. Alexandra Weigelt (jury member), Prof. Dr. Severin Sasso (DBG's contact partner at Leipzig University) (f.l.t.r.). Photo: Anja Kahl

Temperature regulation in tree canopies, heavy metals and herbivory, speciation, development of fluorescent sensors for hypoxia investigations, a phytopararetrovirus of sugar beet, (bio-)synthesis and chemistry of suberin and leucine, as well as the development of orchards in the city were topics of the ten awarded master theses, which were given DBG's awards for best plant science master theses in 2019. The work was carried out at the universities of Bayreuth, Bielefeld, Bonn, Dresden, Cologne, Leipzig, Münster, Oldenburg, Rostock, Salzburg, and the Karlsruher Institut für Technologie. DBG thanks all involved jury members at the universities.

​read more about all 10 awarded theses

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27 Jan 2020

Call for nominees "Best Paper Prize"

The board of DBG's Wilhelm-Pfeffer-Foundation invites nominations and applications for the Prize for the Best Plant Science Publication ("Best Paper Prize"), which will be awarded for an outstanding paper that resulted from a Master, Diploma or PhD thesis.

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Prize for the Best Plant Science Publication

The Wilhelm Pfeffer Foundation awards every other year the best publication with a sum of 1000 Euros. The prize will only be awarded for publications deriving from Diploma, Master or PhD thesis.

Awardees and their paper will be introduced during the upcoming Botanikertagung 2021 and the awarded paper will be listed on DBG's website.

Only members of the German Society for Plant Sciences (DBG) are eligible to submit nominations; self-nominations are also accepted for this prize.

The Prize, casually speaking Best Paper Prize, can be devided. There is no right to receive the prize.

Application

The following documents should be sent for application:

  • Paper (pdf file)
  • Peer review comments of the journal
  • Letter of reference from the academic advisor of the paper. This should also mention in which context (master, diploma or PhD thesis) this work was carried out.

Deadlines

Proposals can be submitted each year (31 March); dates are communicated via the website. Please send your application to the president of the Wilhelm Pfeffer Foundation.

Helen Ballasus (Leipzig University)

Graphical Abstract. Graph: Helen Ballasus

Helen Ballasus's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Leipzig University in the year 2019.

Title: Species effects on temperature regulation mechanisms in the tree canopies at the Leipzig canopy crane

Processes controlling and affecting canopy microclimate are related to the species with its specific structural and physiological functional traits and meteorological predictors depending on vertical canopy architecture.

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Erik Pischke (Rostock University)

Erik Pischke's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Rostock University in the year 2019.

Title:

The role of the leucine biosynthesis for Pb tolerance in Arabidopsis thaliana

He found out that the heavy metal lead can differentially affect the growth of ecotypes and mutants of A. thaliana and that an enzyme involved in leucine biosynthesis is essential for Pb tolerance.

Natural variance of lead tolerance was tested for different ecotypes of A. thaliana to identify molecular mechanism involved in Pb tolerance. Liquid seedling assays were performed, and root lengths were measured upon exposure to Pb. Genome wide association analysis had pointed at enzymes of leucine biosynthesis. Therefore, respective mutants were studied. They showed strong Pb hypersensitivity in comparison to the reference wildtype. A partial rescue of the lead-affected phenotype was observed when leucine was supplied to the medium. Upcoming experiments will aim at understanding the genetic and metabolic reasons for the impacts that Pb has on the leucine biosynthesis in A. thaliana.

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Erik Pischke conducted this work as external Master thesis at the University of Rostock at the Department of Plant Genetics of Prof. Dr. Renate Horn cooperation with the University of Bayreuth at the Department of Plant Physiology of Prof. Dr. Stephan Clemens.

Nicola Schmidt (Technical University Dresden)

Beets were ste objects Nicola Schmidt studied in the greenhouse of the biological institute at Technical University Dresden.

Nicola Schmidt s Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Technical University Dresden in the year 2019.

Title:

Characterisation of the endogenous phytopararetrovirus beetEPRV3 in the sugar beet genome (Beta vulgaris), a new member of the florendoviruses within the Caulimoviridae family

For the first time, the three endopararetrovirus families within the sugar beet genome were described and analysed focusing on the family beetEPRV3. The element structure turned out to be characteristic for the respective beetEPRV family, pointing to specific evolutionary scenarios. Further, the viral sequences were found to be located within highly AT-rich heterochromatin, which provides an explanation for lacking virulence of beetEPRVs.

Endopararetroviruses (EPRVs) are a widespread component of animal and plant genomes as a result of the integration of the viral DNA. A reactivation can cause devastating diseases, as it is known for tobacco or petunia. Using comprehensive bioinformatic methods, in this work the EPRVs within the sugar beet genome were identified and assigned to the florendoviruses, which is an abundant genus within the Caulimoviridae. The element structure was reconstructed for all three beetEPRV families. Two families (beetEPRV1 and beetEPRV3) show intact copies, whereas the third family (beetEPRV2) is arranged in a more fragmented manner. The family beetEPRV3 was furthermore analysed using molecular biological and cytogenetic methods like Southern hybridisation and fluorescent in situ hybridisation. It turned out that EPRVs belonging to this family accumulate in tight, repetitive and therefore mostly inaccessible DNA regions, allowing them to escape the host’s elimination mechanisms. These findings may help to understand how EPRVs keep their virulence in some hosts over long periods.

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Nicola Schmidt conducted this work at the chair of Plant Cell and Molecular Biology in the group of Prof. Dr. Thomas Schmidt.

Paul David Grünhofer (Bonn University)

Paul David Grünhofer's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Rheinische Friedrich-Wilhelms-Universität Bonn in the year 2019.

Title:

Formation and chemical composition of suberin in poplar roots

Grünhofer analysed spatiotemporal suberin deposition in poplar roots and its chemical composition. Most parts of the results comprise control as well as osmotic stress conditions.

Plants employ suberization of root tissue as mechanism of protection against various biotic and abiotic environmental stresses. The tissue-specific formation of suberin under control and stress conditions has been investigated by use of in-vitro tissue culture, hydroponics, fluorescence microscopy and gas chromatography. The main focus of this thesis was to establish a scientifically standardized and reproducible method to grow and treat poplar roots with a variety of different stresses, in order to lay a solid foundation for future research. In addition to that it could already be shown by use of fluorescence microscopy that a treatment of the roots with a mild osmotic stress ( 0.4 MPa) resulted in a shift of the onset of suberization towards the root tip, if compared to control conditions. An analytical preparation and examination of the harvested roots by gas chromatography showed a remarkable overlap of the suberin composition to that of the commonly used model organism Arabidopsis thaliana. A quantitative evaluation to answer the question if the mild osmotic stress in fact does induce an increased suberization of the root tissue could not be answered within this work due to limited time. However, answering this question as well as the examination of more severe osmotic stresses (-0.6 MPa and -0.8 MPa) and the treatment of roots with salt stress will follow in the seamlessly started dissertation. These topics are especially interesting due to rising temperatures in the future, which will make water (represented by osmotic stress) and thereby caused salt stress an even more prominent problem in our soils

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Paul David Grünhofer conducted this thesis at the Institute for Cellular and Molecular Botany (IZMB) in the group of Prof. Dr. Lukas Schreiber.

Philipp Zamzow (Bielefeld University)

Orchard in a good maintenance status. The trees show regular pruning of the branches and are surrounded by protective fences. The undergrowth is not mowed too often and the proximity to a forest is given. Picture from 23.05.2018, Photo: Philipp Zamzow

Philipp Zamzow's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Bielefeld University in the year 2019.

Title of the thesis: Development and evaluation of selected orchards in the city of Bergkamen between 1990 and 2018

Two aspects were examined in this thesis: On the one hand, the development and the current state of Bergkamen's orchard meadows was recorded and examined, which in the history of the town had only taken place once in 1990. On the other hand, this work served to review the minimum criteria set by the Landesamt für Natur, Umwelt und Verbraucherschutz (LANUV) for the protection of orchard meadows and pastures.

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Nathalie Hering (KIT Karlsruhe)

Nathalie Hering's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at KIT Karlsruhe in the year 2019.

Title:

In-situ hybridization in Salvia flowers and closely related Lamiaceae for the detection of developmental genes

She detected an unexpected occurrence of B-class identity genes in the ovary of adult Salvia flowers and closely related Lamiaceae

The flower is an evolutionary key innovation that makes a major contribution to the conservation of the species, as a specialized flower-pollinator interaction is the key to preserve the genetic lineage for many species. Within the flower development, there exists so-called "Genes of Speciation", which are significantly involved in producing reproductive barriers. From this, the debate about the species concept could be resolved, as an analysis of these genes could allow a systematically correct classification of the species. In order to understand the flower development in Salvia and closely related Lamiaceae, the temporal and spatial expression pattern of participating homeotic genes must be considered comparatively. Within this work, the expression of the B-class developmental genes GLOBOSA (GLO) and DEFICIENS (DEF) was investigated qualitatively and quantitatively as well as with the help of in-situ hybridization (ISH) in adult Salvia flowers as well as closely related Lamiaceae. ISH is a molecular biology method for the specific detection of nucleic acids in the cell of histological sections in vivo. By applying this method, the developmental genes GLO and DEF could be successfully localized via ISH in the ovary and stamen of flowers of the Lamiaceae.

The occurrence of the B-class identity gene GLO in the stamens corresponds to the ABC model according to Coen and Meyerowitz. The unexpected localization of the two developmental genes GLO and DEF in the ovary might indicate an evolutionary young, unknown protein or point to a repression of the developmental genes by an unknown microRNA in the fourth whorl. The occurrence of the developmental genes in flowers is confirmed by a qualitative and quantitative gene expression analysis. Accurate temporal expression patterns of the developmental genes could not be detected, only that these genes occur more frequently in late developmental stages of flowering. However, the presence of DEF in the leaf implies an early involvement in the combinatorial network of flower development, in addition to its proper function as a B-class identity gene.

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Nathalie Hering completed the work at the Botanical Institute I, Department of Biodiversitiy of the Karlsruhe Institute of Technology in the working group of Prof. Dr. Peter Nick.

Mary Beyer (Salzburg University)

Mary Beyer's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Salzburg University in the year 2019.

Title

Is heavy metal hyperaccumulation in Noccaea caerulescens acting as a defence mechanism against herbivores?

Mary Beyer found out that accumulated heavy metals can have a deterring effect on herbivores, supporting the “elemental defence hypothesis”. However, the degree of this effect depends largely on the type of heavy metal and the species of herbivore as the feeding experiments showed.

The aim of this thesis was to provide new insights to the “elemental defence hypothesis”. According to this hypothesis, heavy metals act as a defence mechanism, by deterring or killing herbivores and pathogens, which led to a higher accumulation in certain plants (hyperaccumulators). Four types of herbivores (Arion vulgaris, Vanessa cardui, Plutella xylostella and Pieris rapae) were offered plants of the hyperaccumulator Noccaea caerulescens, treated with different concentrations of nickel and zinc, in a free choice feeding trial. The feeding damage on each plant was determined and thus it was assessed if nickel and/or zinc had any effect on the herbivores feeding behaviour.

The results support a significant correlation of feeding preferences and foliar zinc concentrations, reducing herbivory by up to 20%. However, this was not the case for foliar nickel concentrations, though a tendency of some herbivores preferring low levels of nickel could be observed. This shows that the effect of accumulated heavy metals on herbivory depends largely on the type of metal and species of herbivore.

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Mary Beyer conducted this work at the institute for ecology and evolution at Salzburg University in the working group of Prof. Hans-Peter Comes.

Jannes Höpke (Oldenburg University)

Left: Jannes Hökpe pressing plants in the South Ukraine. Photo: Simon Pfanzelt Right: Veronica barrelieri subsp. crassifolia in its type locality (SW Romania). Photo: Jannes Höpke

Jannes Höpke's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Carl von Ossietzky-Universität Oldenburg in the year 2019.

Title:

The intricate species boundary between Veronica spicata and V. orchidea (Plantaginaceae)

For the fist time a systematical comparison regarding missing data in combination with missing allele-dosis-information for population genetical methods like PCA/PCoA and STRUCTURE was conducted. Moreover, genetical material from the type localities of V. barrelieri subsp. crassifolia und V. tzesnae was analysed for the first time in this study.

The aim was to analyse the potentially hybridising species Veronica spicata and V. orchidea (Plantaginaceae) regarding their species boundary. Therefore, both species and morphologically similar species were analysed using Genotyping-by-Sequencing (GBS). The same question was already analysed by Bardy et al. (2011) using AFLP data but we were not able to completely confirm their results. To get a better understanding of how mixed ploidy-levels, the influence of missing data, and missing allele-dosis-information influence population genetical analyses, simulations and analyses of GBS data were conducted to reveal the reasons for the observed differences. Hereby a bug in the programme ipyrad was found out, the importance of paralogs was analysed and the difference between the coding of AFLP and diploidised SNP-Data was worked out

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Jannes Höpke conducted this work in the Institute for Biology and Environmental Sciences in the working group Biodiversity and Evolution of Plants of Prof. Dr. Dirk Albach

see another image

Felix Rehms (Münster University)

Felix Rehms's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Westfälische Wilhelms-Universität Münster in the year 2019.

Title:

Development and application of genetically encoded fluorescent sensors for hypoxia investigation in plants

Rehms documents the visualization of Ca2+-accumulation in energy-deprived cells and the subsequent calcium signal propagation in Arabidopsis thaliana seedlings during prolonged oxygen restriction. He also started the development of genetically coded fluorescent oxygen sensors for use in-planta.

With regards to the growing frequency of extreme precipitation and flooding events caused by global climate changes, tolerance to oxygen deprivation (hypoxia; assumedly the most severe plant stress caused by prolonged submergence) is rapidly gaining relevance as a trait in crop breeding, even though, as of yet, the underlying mechanisms are mostly unknown.

To shed light on the role of second messengers in a plant’s perception and signal transduction of hypoxic conditions or the resulting energy crisis (caused by inhibition of aerobic respiration), genetically encoded fluorescent sensors of cytosolic Ca2+ and ATP concentration were employed for microscopic investigation of submerged Arabidopsis thaliana seedlings in a spatio-temporal resolution.

This way, he was able to record multiple waves of Ca2+-elevations, which were assumedly triggered by the collapse of energy upkeep and subsequent breakdown of active transport mechanisms that ensured the upkeep of steep ion gradients across membranes. Starting from the first energy depleted tissues or cells this wave spreads outwards and across the full seedling. The dynamics of these waves and comparisons to ATP monitoring in hypoxic seedlings suggests active signal propagation, rather than a universal increase caused exclusively by energy deprivation and passive ion leakage.

Additionally, this work documented the beginning development of genetically coded fluorescent oxygen indicators. Such oxygen sensors can be ubiquitously expressed in all tissues and can be applied in-vivo to monitor ongoing developments. In contrast to chemical and physical oxygen measurements, this does not cause any additional plant stress. This makes the fluorescent sensors ideal for the investigation of the oxygen dependency of signals in hypoxic plants. On top of that, the sensors’ independence of plant adaption or developmental mechanisms may lead to the identification of hypoxic niches that were not implicated by expression of hypoxia marker genes.

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Felix Rehms conducted this work at the institute of Plant Biology and Biotechnology (IBBP) in the group of Prof. Dr. Jörg Kudla.

2019

In the year 2019 DBG's representatives at the following universities evaluated master theses in plant sciences. The following persons received the award (in alphabetical order):

Helen Ballasus (Leipzig University)
Species effects on temperature regulation mechanisms in the tree canopies at the Leipzig canopy crane
more in the summary with images

Mary Beyer (Paris-Lodron-Universität Salzburg)
Is heavy metal hyperaccumulation in Noccaea caerulescens acting as a defence mechanism against herbivores?
more in the summary

Paul David Grünhofer (Universität Bonn)
Formation and chemical composition of suberin in poplar roots
more in the summary

Natalie Hering (Karlsruher Institut für Technologie, KIT)
In-situ hybridization in Salvia flowers and closely related Lamiaceae for the detection of developmental genes
more in the summary

Jannes Höpke (Carl von Ossietzky-Universität Oldenburg)
The intricate species boundary between Veronica spicata and V. orchidea (Plantaginaceae)
more in the summary with image

Melanie Kastl (Universität zu Köln)
Functional characterization of the Ustilago maydis organ-specific effectors: UMAG05306 and UMAG11060
more in the summary

Cathrin Manz Philipps-Universität Marburg)
Diversity assessment of the ectomycorrhizal genus Russula in tropical montane forests in Panama
more in the summary with image

Erik Pischke (Rostock University in cooperation with Bayreuth University)
The role of the leucine biosynthesis for Pb tolerance in Arabidopsis thaliana
more in the summary

Felix Rehms (Westfälische Wilhelms-Universität Münster)
Development and application of genetically encoded fluorescent sensors for hypoxia investigation in plants
more in the summary

Nicola Schmidt (Technische Universität Dresden)
Characterisation of the endogenous phytopararetrovirus beetEPRV3 in the sugar beet genome (Beta vulgaris), a new member of the florendoviruses within the Caulimoviridae family
more in the summary with image

Philipp Zamzow (Universität Bielefeld)
Development and evaluation of selected orchards in the city of Bergkamen between 1990 and 2018
more in the summary with images 

26 Sep 2019

Awards for best science posters

Awardees of the poster prizes and of Nicon's Poster Prize 2019. Photo: Thomas Rahr

From the more than 190 posters presented at Botanikertagung 2019 in Rostock, Germany, participants chose several as best papers. The awarded presenters received a document as well as 137 Euros each since the German Society for Plant Sciences (DBG) today was 137 years old.

Awarded young scientists and their poster titles (pdf file)

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09 Sep 2019

Awards for four Exceptional Plant Scientists

The awarded scientists (counter clockwise starting top left): Dr. Constantin Mario Zohner, Dr. Eva-Sophie Wallner, Dr. Moisés Expósito Alonso and Dr. Jessica Lee Erickson. Photos: Jaimie Crowther, Jörg Abendroth, Tobias Jung, and Carolin Alfs

How climate change influences growing seasons length in woody plants and survival of flowers, the substances that influence shape changes of plastids, and the proteins that spur phloem differentiation are in the research focus of the four plant scientists who will receive the science prices of the German Society for Plant Sciences (DBG) this year. Dr. Constantin Mario Zohner, Dr. Jessica Lee Erickson, Dr. Moisés Expósito Alonso and Dr. Eva-Sophie Wallner will get their awards during the Botanikertagung, the International Plant Science Conference in Rostock, Germany. From 16th to 18th September, the four will present their research results to the more than 420 conference participants.

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09 Sep 2019

Awards for four Exceptional Plant Scientists

The awarded scientists (counter clockwise starting top left): Dr. Constantin Mario Zohner, Dr. Eva-Sophie Wallner, Dr. Moisés Expósito Alonso and Dr. Jessica Lee Erickson. Photos: Jaimie Crowther, Jörg Abendroth, Tobias Jung, and Carolin Alfs

How climate change influences growing seasons length in woody plants and survival of flowers, the substances that influence shape changes of plastids, and the proteins that spur phloem differentiation are in the research focus of the four plant scientists who will receive the science prices of the German Society for Plant Sciences (DBG) this year. Dr. Constantin Mario Zohner, Dr. Jessica Lee Erickson, Dr. Moisés Expósito Alonso and Dr. Eva-Sophie Wallner will get their awards during the Botanikertagung, the International Plant Science Conference in Rostock, Germany. From 16th to 18th September, the four will present their research results to the more than 420 conference participants.

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04 Jul 2019

50 Travel Grants for a Lab Visit

Graph: delalidela, iStockphoto

Members, especially early career plant scientists, can receive funding for visiting another lab or institute. For example to leant new methods and  scientific techniques or to initiate a new pilot study. Funding is restricted to those who will not receive funding elsewhere. DBG offers up to 50 travel grants each year for early career plant scientists of up to 400 Euros each. Our Executive Board reviews the applications and gives you feedback about its decision (normally within one week).

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02 Jul 2019

50 Travel Grants for a Lab Visit

DBG offers travel grants for early career scientists, who want to visit another lab / institute for example to leanr new methods and scientific techniques or to initiate pilot studies with up to 400 Euros each. 

> application process

> payment of grants

> online application form

02 Jul 2019

50 Travel Grants for a Lab Visit

DBG offers travel grants for early career scientists, who want to visit another lab / institute for example to leanr new methods and scientific techniques or to initiate pilot studies with up to 400 Euros each. 

> application process

> payment of grants

> online application form

17 Jan 2019

Recipients of the Best Paper Awards

Dr. Aleksandra Sapala (left) and Dr. Jutta Baldauf receive are awarded with DBG's Best Paper Prize 2018. Photos: private and Barbara Frommann, Bonn University.

The DBG awards the two young plant scientists Dr. Aleksandra Sapala (MPI for Plant Breeding Research Cologne, Dr. Richard Smith at Prof. Miltos Tsiantis) and Dr. Jutta Baldauf (Bonn University, Prof. Frank Hochholdinger) with its Best Paper Prize. Sapala has shown why plants have puzzle cells, how this shape emerges and what advantages they provide for the plant. In the journal eLife (DOI: 10.7554/eLife.32794) she also demonstrates that in plants physics play just an important role as biochemistry or genetics. Baldauf described extensive gene expression complementation in maize hybrids driven by evolutionary younger non-syntenic genes in the journal Current Biology (DOI: 10.1016/j.cub.2017.12.027). These SPE genes could be used to identify high-yield plants. Both awardees will receive their certificates next year during the Conference Botanikertagung in Rostock, Germany. The financial endowments were already presented to them.

Read more about DBG’s support of young scientists

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Mareike Busche (Bielefeld University)

A) A banana plant. B) Accumulation of red pigments in the plant's leaves. Anthocyanins are very likely to contribute a major part of the red pigments.

Mareike Busche's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Bielefeld University in the year 2018.

Title of awarded thesis

"Functional characterisation of two flavonol synthases and an anthocyanidin synthase from Musa acuminata"

This work contributes to understanding of flavonol and anthocyanidin synthesis in Musa acuminata (banana) and provides a basis for further research towards increased flavonoid production through the analysis of two involved enzymes.

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Application Process: Travel Grants

The DBG supports young scientists and provides a maximum of 100 travel grants up to 350 Euros for participants of the Botanikertagung (15-19 September 2019 in Rostock, Germany).

Requirements

  • You must be a member of the DBG (membership applications are possible any time; become a member)
  • You are a young scientist doing a PhD or writing your Master thesis without holding a full position
  • You are working on a topic of plant science
  • You are presenting a poster or giving a (short) oral presentation
  • You provide evidence of your expenses with receipts after the conference
  • Multiple financial support is excluded

Application

Please complete the > application form, which will be transmitted to the treasurer of the DBG. You will receive a notice until 26th May whether or not you will receive one of the travel grants.

Deadline

Please submit your application until 24th May 2019 the latest.

Decision

You will receive an e-mail regarding the approval of your travel grant application.

Reimbursements

Traveling Costs

DBG reimburses either a second-class train or bus ticket or it covers the travel allowance for car usage.

Accommodation Costs

The DBG reimburses accommodation costs not exceeding the maximum of the legally established levels of the tax office.

Registration fee

The DBG reimburses registration fee.

2018

In the year 2018 DBG's representatives at several universities evaluated master theses in the plant sciences. The following persons received the award (in alphabetical order):

Benjamin Al (TU München)
Elucidation of the biological significance of post-translational modifications of Arabidopsis TRAPPII tethering complex proteins
more in the summary

Mareike Busche (Universität Bielefeld)
Functional characterisation of two flavonol synthases and an anthocyanidin synthase from Musa acuminata
more in the summary with image

Michael Gasper (Universität Münster)
Impact of lysine deacetylation on Arabidopsis thaliana seed germination physiology
more in the summary with image

Marc Halder (Universität Konstanz)
Investigating the competitive advantage of functional NPQ in Phaeodactylum tricornutum
more in the summary

Stefan Lucius (Universität Rostock):
Charakterisierung des Phänotyps von Arabidopsis-antisense-PGPase-Pflanzen nach Expression cyanobakterieller PGPasen
more in the summary

Fabian-Philipp Sylvester (FU Berlin)
Targeted „genome editing“ via CRISPR/Cas9 and characterization of CDPKs in stress response
more in the summary

Benjamin Al (TU München)

Benjamin Al's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at TU München in the year 2018.

Title of awarded thesis

"Elucidation of the biological significance of post-translational modifications of Arabidopsis TRAPPII tethering complex proteins"

Al charakterisierte das Modul TRAPPII, das eine entscheidende Komponente für die Stressphysiologie und Anpassungsfähigkeit von Pflanzen ist.

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Michael Gasper (Universität Münster)

Arabidopsis thaliana Col-0 seeds before germination (A) and after germination (B) (white bar = 500 µM). Germination sensu stricto is completed when the radicle of the embryo protrudes through the micropylar endosperm.

Michael Gasper's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Münster University in the year 2018.

Title of awarded thesis

"Impact of lysine deacetylation on Arabidopsis thaliana seed germination physiology"

This work shows that chemical inhibition of lysine deacetylase activity during seed germination decreased germination speed. Genetic experiments indicated that lysine deacetylases can regulate hormonal signalling during seed germination.

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Marc Adam Halder (University of Constance)

Marc Halder's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at University of Constance in the year 2018.

Title of awarded thesis

"Investigating the competitive advantage of functional NPQ in Phaeodactylum tricornutum"

By means of competition experiments the effect of NPQ on the growth performance of a diatom under natural simulated light conditions were analyzed.

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Stefan Lucius (Rostock University)

Stefan Lucius's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Rostock University in the year 2018.

Title of awarded thesis

"Phenotypical characterization of Arabidopsis antisense PGPase plants expressing putative cyanobacterial PGPases"

In this study we analyzed to what extent the expression of four putative 2-phosphoglycolate phosphatases (PGPases) from the cyanobacterium Synechocystis sp. PCC 6803 can complement the photorespiratory phenotype of Arabidopsis thaliana antisense PGPase plants.

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Fabian-Philipp Sylvester (FU Berlin)

Fabian-Philipp Sylvester's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at FU Berlin in the year 2018.

Title of awarded thesis

"Targeted „genome editing“ via CRISPR/Cas9 and characterization of CDPKs in stress response"

This work shows the great potential of CRISPR/Cas9 regarding the analysis of coupled inherited isoforms of a gen family, here a CDPK gene cluster. Sylvester for the first time generated a triple mutant including cpk21, cpk23 using CRISPR/Cas9.

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07 Sep 2018

Best Paper Prize: Recipients 2018

Dr. Katja Meyer and Dr. Max Lauterbach are awarded with DBG's Best Paper Prize. Photos: Janina Lüders (r) und private

The DBG awarded the two scientists Dr. Katja Meyer (Bielefeld University, WG Prof. D. Staiger) and Dr. Max Lauterbach (Mainz University, WG Prof. G. Kadereit, now Australia) with the Best Paper Prize in Plant Sciences 2018. Meyer adapted the iCLIP technique for plants and identified numerous rhythmic transcripts to be directly regulated by the clock-controlled RNA-binding protein AtGRP7. She published the results in the Journal Genome Biology (DOI: 10.1186/s13059-017-1332-x). Lauterbach identified genes putatively encoding novel C4 proteins through a comparison of five chenopod species with different photosynthetic types. He published the results in the journal Frontiers in Plant Science (DOI: 10.3389/fpls.2017.01939). The awardees will receive their certificates next year during the Conference Botanikertagung in Rostock, Germany. The financial endowments were already given to them.

Read more about DBG’s support of young scientists

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Linda Titkemeier (Carl von Ossietzky University Oldenburg)

Linda Titkemeier's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Carl von Ossietzky Universität Oldenburg in the year 2017

Title of awarded thesis

"Development of suitable supports for plant specification courses.
A research on German High School and college students to determine their knowledge of native plants, their diversity and growth."

This research is the first to compare the knowledge of Biology college students before and after taking part in a plant specification course and the first to take a focus on how to further improve study supports.

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21 Mar 2018

Programme: Eduard Strasburger Workshop Mitochondria

The final programme for the Eduard-Strasburger Workshop of the DBG is ready and lists speakers and titles of the talks. The paper also informs about the venue and public transportation. The conference will take place in Bonn, Germany, from 17th to 19th April 2018. Orgnizers Dr. Stefanie Müller-Schüssele und Dr. Mareike Schallenberg-Rüdinger are looking forward to an interesting meeting.

> Programme (pdf)

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20 Feb 2018

Invitation: Eduard Strasburger Workshop Mitochondria

From 17th to 19th April early career plant scientists will meet to discuss research on mitochondria at Bonn University under the title Power Plants in Plants – Mitochondrial Functions in the Green Lineage. Interested people are invited to register until 10th March 2018. The Eduard-Strasburger Workshop funded by the DBG is organised by Dr. Stefanie Müller-Schüssele und Dr. Mareike Schallenberg-Rüdinger who look forward to an interesting meeting, which will allow early careers scientists to meet, network and discuss their recent results.

> Poster: speakers and schedule (pdf file)

> Registration Form (Word .dotx file)

> Venue: Bonn University, Institute for Cellular and Molecular Biology (IZMB), Kirschallee 1, 53115 Bonn, Germany

26 Jan 2018

DBG Honoured best Master Theses

Bielefeld University awarded certificates for the best Master theses of the year 2017. Among them the prize for the best plant science master thesis of Jan Hendrik Hoerner (third from right). Photo and Copyright: Ch. Weische, Bielefeld University on 6th Dec 2017

Why an invasive pest slug devoured some lettuces while others remain untouched was one of the topics of the honoured master theses (little hint: it were not the salads themselves). The other young plant scientists elucidated specific functions of N-glycosylated proteins in plants, analysed the effects of inhibited chloroplast's development on genetic expression, tested, which substances of an invasive plant contributed to substantial crop failure. One thesis clarified three algal taxa of Trachelomonas, that were validly described already 100 years ago. For the fourth time the German Society for Plant Sciences (DBG) has awarded outstanding MSc theses. This year they were given to three female and two male biologists from the universities of Bielefeld, Münster, Salzburg, Kiel as well as LMU in Munich. The summaries and images of the outstanding works are now on the website.  

See overview

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Jan Hendrik Hoerner (Bielefeld University)

A) The plant Erodium cicutarium (L.) L’Hér. ex Aiton. B) The lobed cotyledons are an important feature to distinguish E. cicutarium from seedlings from other species of its genus. C) The sharply pointed and hairy base of E. cicutarium seed facilitates zoochory. D) Upcoiling awn of the ripe and dry E. cicutarium seed. Once on soil, humidity causes the helical shape to unwind and drill the seed with the sharply pointed base ahead into the ground. Graphs: Jan Hendrik Hoerner

Jan Hendrik Hoerner's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Bielefeld University in the year 2017.

Title of awarded thesis

"Allelopathic effects of the invasive plant Erodium cicutarium on agricultural crop plants"

The invasive common stork´s-bill Erodium cicutarium causes yield reduction of various crops in North America. Jan Hendrik Hoerner examined responsible allelochemicals, natural substances produced by the stork´s-bill, which are able to suppress the growth of other plants. He fractionated phenolic compounds with high inhibitory effects, even in minor concentrations.

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Anike Schaller (Kiel University)

To prevent the development of chloroplasts, Arabidopsis thaliana seedlings were grown on medium containing Spectinomycin, an inhibitor of translation: A, B control plants without inhibitor; C, D seedlings with inhibitor. Images and copyright: Anike Schaller, Kiel University

Anike Schaller erhielt den Preis für die beste pflanzenwissenschaftliche Master-Arbeit, die an der xxUniversitätxx im Jahr 20xx erstellt wurde, von der Deutschen Botanischen Gesellschaft.

Anike Schaller's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at  Kiel University in the year 2017

Title of awarded thesis

"Investigations into the role of WHIRLY proteins in communication between nucleus and organelles"

Schaller has shown, that the inhibition of the chloroplast's development coincides with increased expression of nuclear genes encoding anti-stress proteins such as WHIRLY2 in mitochondria.

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Birte Peters (Salzburg University)

The Spanish slug, Arion vulgaris, is feeding on sterile lettuce leaves inoculated with several bacterial strains. Photo: Birte Peters

Birte Peters's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Salzburg University in the year 2017.

Title of awarded thesis

"Epiphytic bacteria on lettuce affect the feeding behavior of an invasive pest slug"

This study showed for the first time that lettuce leave surface associated bacteria can directly affect the feeding behavior of a generalist herbivore.

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Hannah Elisa Krawczyk ( Münster University)

Hannah Elisa Krawczyk's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at xxUniversity in the year 2017

Title of awarded thesis

"Influence of complex-type N-glycosylation on brassinosteroid signaling in Arabidopsis thaliana"

Hannah Elisa Krawczyk attempts to elucidate specific functions of N-glycosylated proteins in plants. She now found a correlation between the inability to form complex-type or hybrid-type N-glycans in the Golgi apparatus and an altered sensitivity towards the two phytohormones brassinolide (BL) and abscisic acid (ABA).

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Anže Žerdoner Čalasan (Ludwig-Maximilians-Universität München)

Fig. C: Electron microscope image of Trachelomonas cells at different ontogenetic stages. Fig. F: Light microscope image of a Trachelomonas cell during hatching. Images: Anže Žerdoner Čalasan, LMU

Anže Žerdoner Čalasan's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Ludwig-Maximilians-Universität München (LMU) in the year 2017

Title of awarded thesis

"Morphological, phylogenetic and taxonomic analysis of selected Trachelomonas (Euglenida) strains"

Anže Žerdoner Čalasan clarified three taxa of Trachelomonas taxa that were validly described already 100 years ago. In doing this he was able to apply also genetic information for reliable species determination.

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2017

In the year 2017 DBG's representatives at several universities evaluated master theses in plant sciences. The following persons received the award (in alphabetical order):

Anže Žerdoner Čalasan (Ludwig-Maximilians-Universität München)
Morphological, phylogenetic and taxonomic analysis of selected Trachelomonas (Euglenida) strains
more in the summary with image

Jan Hendrik Hoerner (Universität Bielefeld)
Allelopathic effects of the invasive plant Erodium cicutarium on agricultural crop plants
more in the summary with two images

Hannah Elisa Krawczyk (Universität Münster)
Influence of complex-type N-glycosylation on brassinosteroid signaling in Arabidopsis thaliana
more in the summary with image

Birte Peters (Universität Salzburg)
Epiphytic bacteria on lettuce affect the feeding behavior of an invasive pest slug
more in the summary with two images

Anike Schaller (Universität Kiel)
Untersuchungen zur Rolle von WHIRLY-Proteinen in der Kommunikation zwischen Zellkern und Organellen
more in the summary with image

Linda Titkemeier (Carl von Ossietzky-University Oldenburg)
Entwicklung geeigneter Lernhilfen für die Pflanzenbestimmungsübungen
more in the summary

03 Nov 2017

Strasburger Workshop: Cooperation and Conflict between Genomes

The workshop participants came from more than five countries. Photo: Niklas Buhk

Sorry, in German only

Der 3. Eduard Strasburger Workshop mit dem Titel Two Genomes in one Cell - Communication and Conflict lockte mehr als 40 Wissenschaftlerinnen und Wissenschaftler der Polyploidie- und Hybridisierungsforschung nach Bremen. Dort thematisierten sie, welche Schwierigkeiten Zellen meistern, die ihre Chromosomensätze mischen oder gar vervielfältigen. Der Workshop fand vom 30. August und 1. September 2017 statt unter der Regie der Nachwuchswissenschaftler Dawit Girma Tekleyohans, Niklas Buhk und Thomas Nakel der Universitäten Oldenburg und Bremen. Die vorwiegend jungen Nachwuchskräfte reisten aus mehreren Nationen an, darunter Deutschland, Österreich, Schweiz, Schweden und Pakistan, was die internationale Relevanz des Themas unterstreicht. Die Organisatoren berichten in ihrer Tagungsnachlese unter anderem über neue Modellpflanzen, einen Genomschock, eine Methode zum Nachweis von drei Eltern und in welcher Weise junge Forschende bevorzugt wurden.

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Awards for best posters at Botanikertagung 2017

From the 235 posters presented at Botanikertagung 2017 in Kiel an expert jury chose several as best papers. The awarded presenters received a document as well as 135 Euros each since the German Society for Plant Sciences (DBG) today was 135 years old.

Awarded young scientists and their posters (pdf file):

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11 Apr 2017

Invitation: Strasburger Workshop 2017

This summer, young plant scientists will focus on Two genomes in one cell - communication and conflict. From August 30 until September 1, 2017, they will come together in Bremen in the 3rd Eduard Strasburger Workshop. The Workshop supported by the DBG brings together young and senior plant scientists and opens a forum for talks and discussions as well as for networking. Registration deadline for the popular workshop that will be organized by young scientists from the Universities of Bremen and Oldenburg (Dr. Dawit Girma Tekleyohans, M.Sc. Thomas Nakel, M.Sc. Niklas Buhk) is on July, 31.

> Poster (pdf file)

> Invitation and topic (pdf file)

> Registration (pdf file)

> details on website: http://www.uni-bremen.de/en/molgen/strasburger-2017.html

Follow link
13 Feb 2017

Grant: Travel allowances to Botanikertagung

The society supports young scientists in granting travel allowances for members of the DBG who participate at the Botanikertagung by presenting an oral paper or a poster (author or coauthor). The international Botanikertagung will take place in Freising Weihenstephan from August 30th to September 3rd, 2015. It will be provided either for students / graduates or for young researchers who lack a full salary.

Travel allowances and application: Details and Application Form (Intranet)

> become a member of the DBG first

12 Feb 2017

Eduard Strasburger-Workshop

Sorry - in German only:

Von Nachwuchswissenschaftlern für Nachwuchswissenschaftler

Wenn Sie Postdoc oder Doktorand sind, eine Idee für einen Workshop über eine aktuelle pflanzenwissenschaftliche Thematik mit interdisziplinären Ansätzen haben und eine Plattform für einen lebendigen Austausch von Doktoranden untereinander veranstalten möchten, schicken Sie Ihr Konzept bitte an den Vorstand der DBG, der Ihre Veranstaltung im Rahmen eines Eduard Strasburger-Workshops mit bis zu 5.000 € unterstützt. Bitte wenden Sie sich jederzeit an den Präsidenten der DBG. Der zweite Eduard Strasburger-Workshop fand im September 2016in München statt und hatte den Titel "Phylogenomics - The next generation of evolutionary botany". In ihrer Tagungsnachlese thematisieren die Organisatorinnen Susann Wicke und Dörte Harpke nicht nur die Tagungsschwerpunkte sondern auch die Sorgen der Nachwuchskräfte.

Details im aktuellen Ausschreibungstext (pdf)

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Herbert Braunschmid (Salzburg University)

Floral measurements: Length and height of the labellum, width of the labellum mouth (a), and posterior exit height (b; with a bee leaving through the posterior exit). Photo: Herbert Braunschmid

Herbert Braunschmid's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Salzburg University in the year 2016.

Title of the awarded thesis

"Divergent floral traits and pollinators of Cypripedium calceolus L."

The work analyses whether divergent floral traits of the lady's-slipper orchid (Cypripedium calceolus) along an altitudinal gradient are driven by pollinator mediated selection.

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Wilena Telman (Universität Bielefeld)

Wilena Telman's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Bielfeld University in the year 2016.

Title of awarded thesis

"Function of the 2-cystein peroxiredoxin and cyclophilin 20-3 within the redox-regulatory network in A. thaliana"

The obtained results gave evidence that the chloroplastidic 2-CysPrx-Cyp20-3 module links the redox, protein and thiol homeostasis in the context of cellular stress adaptation.

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2016

In the year 2016 DBG's representatives at 5 universities evaluated master theses in plant sciences. The following persons received the award (in alphabetical order):

Herbert Braunschmid (Universität Salzburg)
Divergent floral traits and pollinators of Cypripedium calceolus L.
more in the summary with image

Ina Burghardt (Goethe Universität Frankfurt)
"The impact of plastid immunophilins on light acclimation of Arabidopsis thaliana.
more in the summary with image

Dominika Kundel (Universität Konstanz)
Bio-Effector Application: Impact on Growth Performance of maize and effect on associated arbuscular mycorrhizal fungi.
more in the summary with image

Laura Mosebach (Universität Münster)
Regulation of photosynthetic electron transfer via PGRL1 and PGR5 in Chlamydomonas reinhardtii.
more in the summary with images

Wilena Telman (Universität Bielefeld)
Zur Funktion des 2-Cystein Peroxiredoxins und des Cyclophilin 20-3 innerhalb des Redox-regulatorischen Netzwerks von A. thaliana.
more in the summary

Paulina Anna Zigelski (Universität Hamburg)
“Molecular biogeography of the Syzygium guineense complex: How environment and genetics push suffrutication in Africas Miombo region“
more in the summary with images

Dominika Kundel (Universität Konstanz)

Dominika Kundel analyses growth parameters. Photo: Andreas Basler, Forschungsinstitut für biologischen Landbau Schweiz (FiBL)

Dominika Kundel's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Konstanz University in the year 2016.

Title of the awarded thesis

"Bio-Effector Application: Impact on Growth Performance of maize and effect on associated arbuscular mycorrhizal fungi."

Plant extraction products and tiny soil organisms, so called Bio-Effectors might improve current fertilization strategies. The methods applied in this thesis might be helpful in further investigations on this subject.

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Ina Burghardt (Goethe Universität Frankfurt)

State I state II transition measurement of the fkbp mutant. State I was induced in Arabidopsis plants and afterwards the extent of antenna movement was determined as ratio of transient maximum fluorescence / maximum fluorescence. (Left: Fm‘/Fm pseudocolor image after 10 min.; right: time course Fm‘/Fm of WT – black and fkbp mutant – green.) Graph: Ina Burghardt

Ina Burghardt 's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Goethe University Frankfrut in the year 2016.

Title of awarded thesis

"The impact of plastid immunophilins on light acclimation of Arabidopsis thaliana."

 

Plastid FKBP-type immunophilins are putative regulators of photosynthetic complexes. Knocking out one of these FKBPs led to loss of antenna movement (state transitions), the required STN7-kinase is active.

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Laura Mosebach Universität Münster

The photosynthetic machinery. Linear electron flow (LEF), cyclic electron flow (CEF) and the roles of the transmembrane electrochemical proton gradient. As electron transfer is coupled to proton translocation, LEF and CEF contribute to the formation of the proton gradient. LEF involves water splitting and NADPH production. The proton gradient fuels ATP synthesis, induces non-photochemical quenching (qE) and exerts photosynthetic control. LHC = light harvesting complex; PS = photosystem; Cyt b6f = cytochrome b6f complex; PC = plastocyanin; FDX = ferredoxin; FNR = FDX:NADP+ reductase; ATPase = CF1-F0-ATP-synthase; PGRL1 = PGR5-like photosynthetic phenotype 1; PGR5 = proton gradient regulation 5. Top left: Chlamydomonas reinhardtii Source of algal cell: Pflanzenforschung.de (http://www.pflanzenforschung.de/de/themen/pflanzen-im-fokus/chlamydomonas/) (adapted from Pflanzenforschung.de) Graph: Laura Mosebach

Laura Mosebach's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at xxUniversity in the year 2016.

Title of awarded thesis

"Regulation of photosynthetic electron transfer via PGRL1 and PGR5 in Chlamydomonas reinhardtii"

The proteins PGRL1 and PGR5 are potentially involved in the recruitment of Ferredoxin:NADP+ Reductase (FNR) to the thylakoid membrane which is involved in the photosynthetic electron transport in the green alga.

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Paulina Anna Zigelski

Phenotypic varieties of Syzygium guineense s.l., S. benguellense (middle left) and S. cordatum (upper right). This morphological diversity is a response to adaptation to different habitats of southern Africa like rivers, flood plains, open grasslands, more or less open woodlands and mountainous areas.Photos: Paulina Zigelski

Paulina Anna Zigelski's Master thesis was awarded with the Prize for the Best Plant Science Master Thesis, which was carried out at Hamburg University in the year 2016.

Title of awarded thesis

"Molecular biogeography of the Syzygium guineense complex: How environment and genetics push suffrutication in Africas Miombo region"

For the first time the origins of „underground trees“ in southern Africa were investigated in detail using a model species: an interaction of environmental and genetic factors play a crucial role in their evolution.

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2015

In the year 2015 DBG's representatives at 6 universities evaluated master theses in plant sciences. The following persons received the award (in alphabetical order):

Christoph Hahn (Carl-von-Ossietzky Universität Oldenburg):
The diversity of kale: Glucosinolate content and phylogenetic relationships
more in the summary with images

Barbara Jakobs (Universität Konstanz):
Charakterisierung der physiologischen Funktion der mitochondrialen Protease DEG10 in Arabidopsis thaliana
more in the summary

Stefanie Jung (Justus-Liebig-Universität Gießen):
Salt tolerance and genetic variability of Prunus serotina Ehrh.
more in the summary with images

Johanna Kozak (Technische Universität München):
Dwarf, subalpine coniferous forests on permafrost lenses below the treeline in the Swiss Alps
more in the summary with images

Christoph Tim Krannich (Universität Rostock):
Role of the ethylene-signaling-pathway with regard to drought tolerance and storage of potatoes
more in the summary

Franziska Walther (Goethe-Universität Frankfurt):
Flora and vegetation of pavement grooves in the city of Frankfurt am Main
more in the summary with images

Eva Laura von der Heyde (Universität Bielefeld):
Study of taxonomically restricted gene families in Volvox carteri
more in the summary with images

2014

In the year 2014 DBG's representatives at 13 universities evaluated the master theses in plant sciences. The following persons received the award (in alphabetical order):

Philip Albers (FU Berlin):
In vivo regulation of Arabidopsis thaliana CPK5 in plant pathogen defense
more in the German summary

Christodoulos Filippis (Goethe-Universität Frankfurt): 
Untersuchungen zur Rolle von PaRCF1 und PaRCF2 bei der Organisation von Atmungskettensuperkomplexen bei Podospora anserina
more in the German summary

Simon Fraas (Universität Hamburg):
Hansa-Trace - Ein System zur automatischen Hochdurchsatz-Erfassung der schnellen Wachstums-effekte bei Arabidopsis thaliana L HEYNH more in the German summary with images

Klaus Herburger (Universität Innsbruck):
Zellwandkomponenten und ökophysiologische Charakterisierung der streptophytischen Grünalgen Klebsormidium sp. und Zygnema sp.
more in the German summary with images

Marcel Kansy (Universität Leipzig):
Einfluss von Lipiden auf die Struktur und Funktion von Photosystem II
more in the German summary

Friedrich Kirsch (Universität Rostock):
Integration des cyanobakteriellen Glyceratwegs aus Synechocystis sp. PCC6803 in die Photorespiration von Arabidopsis thaliana
more in the German summary

Christian Köttig (TU München):
Redoxregulation von Proteinposphatasen des Typs C2
more in the German summary with images

Verena Lauströer (Universität Bielefeld):
Influence of mycotrophic degree on growth response for two plant species in single and competition treatments under conditions promoting parasitism by arbuscular mycorrhizal fungi
more in the summary with images

Maximilian Lauterbach (Johannes Gutenberg-Universität Mainz):
Phylogeny and biogeography of Zygophyllum s.l. (Zygophyllaceae)
more in the German summary with images

Frederic Schramm (Philipps-Universität Marburg):
Analysis of the peroxisomal membrane proteome of the diatom Phaeodactylum tricornutum and in vivo localization studies of putative peroxisomal proteins

more in the German summary mit Bildern

Sophie Steinhagen (Justus-Liebig-Universität Giessen):
Ultrastruktur der Zellen von Cryptochlora perforans (Chlorarachniophyta)
more in the German summary with images

Florian Ulm (TU Kaiserslautern):
Below ground processes of a native and an invasive legume as a driver for nitrogen distribution on community scale
more in the German summary with images

Sebastian Wittek (Universität zu Köln):
Prosoaulax, a dinoflagellate with mysterious plastids
more in the German summary with images

Young scientists awarded with the Horst Wiehe Prize

The DBG awards the Horst Wiehe Prize for an outstanding PhD Thesis every other year. The following scientists were endowed:

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