Zeitschrift: Plant Biology

In their review authors Pittman and Hirschi summarize recent findings on the significance of CAX transporters (Cation/H⁺ Exchangers) in plant signal transduction and element partitioning. This may open future ways of strategically manipulating the temporal loss of CAX function in agriculturally important crops that may bolster plant immunity, enhance cold tolerance, and fortify resilience against one of agriculture’s most significant challenges, namely flooding. In their review entitled "CAX control: multiple roles of vacuolar cation/H⁺ exchangers in metal tolerance, mineral nutrition and environmental signalling" the authors also address the use of genetically encoded Ca²⁺ sensors, the loss of CAX functions and specific stress conditions, as well as the determination of optimal timing and approach for modulating the expression of CAX.

Read whole paper open access in our scientific journal Plant Biology (2024) DOI: 10.1111/plb.13698

Since the precise mechanisms through which nitrogen influences lignin biosynthesis have not been fully elucidated, the authors Peng, Shrestha, Zhang, Fan, Yu and Wang summarize a systematic search of the literature. Among the selected studies, 64.52% refer to lignin content found a negative correlation between nitrogen availability and lignin content. High nitrogen decreases the lignin content, delays cell lignification, increases p-hydroxyphenyl propane monomer content, and regulates lignin synthesis through the expression of key genes. Nitrogen deficiency enhances lignin synthesis through the accumulation of phenylpropanoids, phenolics, and soluble carbohydrates, and indirect changes in phytohormones, secondary metabolites, etc. The paper "How lignin biosynthesis responds to nitrogen in plants: a scoping review" provides new insights and important references for future studies on the regulation of lignin biosynthesis.

Read whole paper in our scientific journal Plant Biology (2024) DOI: 10.1111/plb.13627

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In their review "The modelling of flower colour: spectral purity or colour contrast as biologically relevant descriptors of flower colour signals for bees depending upon the perceptual task" authors Lunau and Dyer ask whether quantitative modelling of flower signals should strive for repeatable consistency enabled by parameter simplification, or whether modelling should reflect the dynamic way in which bees are known to process signals. They also touch why colour is an interpretation of spectral information by the animal's brain, and how bee's colour perception is based on physiological, neuroanatomical and behavioural evidence to provide a pathway for modelling flower colours. They ask, whether flower petals and floral guides as viewed against spectrally different backgrounds should be considered as a simple colour contrast problem or require a more dynamic consideration of how bees make perceptual decisions. The authors also discuss exploitative vs. honest signalling.

Read whole paper open access in our scientific journal Plant Biology (2024) DOI: 10.1111/plb.13682 

Cytisus scoparius (L.) Link, commonly referred to as Scotch broom, is a Mediterranean shrub capable of thriving in a variety of ecosystems that has invaded every habitable continent on Earth. The authors PW Hacker and NC Coops here present a timeline and estimated rate of expansion from 1816 to 2016. They also model its expected range over the next 70 years, and highlight the need for investigation into its expansion mechanisms and the establishment of monitoring programs.

Read whole paper open access in our scientific journal Plant Biology (2024) DOI: 10.1111/plb.13662

It is challenging to maintain high crop yields, even in arid and drought-prone regions that depend on irrigation. In this review authors Geilfus, Zörb, Jones, Wimmer & Schmöckel explain water use efficiency (WUE) and options to improve water use and thus crop yield. Nutrient management might represent another possibility to manipulate water uptake and use by plants. An emerging topic involves agroforest co-cultivation, where trees in the system facilitate water transfer through hydraulic lift, benefiting neighbouring crops. Other options to enhance crop yield per water use are also discussed.

Read paper in our scientific journal Plant Biology open access (2024) DOI: 10.1111/plb.13652

Breeding of new plant varieties with lower mesophyll resistance for CO₂ diffusion requires knowledge of its diffusion components. Authors Janová, Kubásek, Grams, Zeisler-Diehl, Schreiber & Šantrůćek therefore tested a new method to estimate relative drawdowns of CO₂ concentration across hypostomatous leaves of Fagus sylvatica integrated over the lifetime of the leaf. The new method shows that intercellular components is minor but not negligible part of CO₂ diffusion and reflects leaf anatomy traits, i.e. leaf mass per area and thickness.

Read paper in our scientific journal Plant Biology open access (2024) DOI: 10.1111/plb.13655

In their paper the authors Park et al. provide a brief overview of recent progress in genome-editing technologies, including zinc-finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and clustered regularly interspaced short palindromic repeats (CRISPR)-associated protein 9 (Cas9) technologies. They classify disease resistant mutants of Arabidopsis thaliana and several crop plants based on the roles or functions of the mutated genes in plant immunity and suggest potential target genes for molecular breeding of genome-edited disease-resistant plants. Genome editing technologies are resilient tools for sustainable development and promising solutions for coping with climate change and population increases.

Read whole paper in our scientific journal Plant Biology (2024) DOI: 10.1111/plb.13625

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In the open access paper "pollen, anther, stamen, and androecium mimicry" authors Lunau, De Camargo and Brito review the hypotheses, why the yellow UV-absorbing floral centre is so frequent in angiosperms. They review the pollen, anther, stamen, and androecium mimicry (PASAM) hypotheses, present new and published data on pollenating and pollen-collecting pollinators’ responses to PASAM structures and discuss how widespread these systems are around the globe. Their ultimate goal is to promote the idea that PASAM is a plausible first approach to understanding floral colour patterns in angiosperms.

Read whole paper in our scientific journal Plant Biology (2024) DOI: 10.1111/plb.13628

The paper summarizes the ecological and physiological significance of mycorrhization. As the authors Chaudhury et al. describe: Dual mycorrhization relationships in trees and even triple relationships among trees, mycorrhizal fungi and bacteria offer an interesting physiological system to understand how plants interact with other organisms for better survival. Besides, studies indicate additional roles of mycorrhization in learning, memorizing and communication between host trees through a common mycorrhizal network (CMN). Recent observations in trees suggest that mycorrhization may even promote tolerance to multiple abiotic (e.g., drought, salt, heavy metal stress) and biotic (e.g. fungi) stresses. Due to the extent of physiological reliance, local adaptation of trees is heavily impacted by the mycorrhizal community. This knowledge opens the possibility of a non-GMO avenue to promote tree growth and development. Indeed, mycorrhization could impact growth of trees in nurseries and subsequent survival of the inoculated trees in field conditions.

Read whole paper in our scientific journal Plant Biology (2024) DOI: 10.1111/plb.13613

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In their review authors Han et al. summarize and classify allelochemicals and chemical signals according to their function and structure in relation to environmental factors and generation and diffusion of such signals, since allelopathy and allelobiosis have never been systematically reviewed thus far. Moreover the authors provide recent research on the application of allelopathy and allelobiosis in agroecosystems in future studies.

Read whole paper in our scientific journal Plant Biology (2023) DOI: 10.1111/plb.13582 

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In the article "An overview of oxygen transport in plants: diffusion and convection" author G. G. Striker summarizes how plants under hypoxia/anoxia ensure a steady oxygen supply to their cells and identifies three types of pressurized (convective) flows: humidity-induced pressurization (positive pressure), thermal osmosis (positive pressure with air flow against the heat gradient), and venturi-induced suction (negative pressure) caused by wind passing over broken culms.

Read whole paper in our scientific journal Plant Biology (2023) DOI: 10.1111/plb.13558.

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In the article "Evolution of a non-flying mammal-dependent pollination system in Asian Mucuna (Fabaceae)" author S. Kobayashi summarizes the available knowledge of pollination in Asian Mucuna (Fabaceae), a genus mainly distributed in the tropics, and discusses the evolution of plants pollinated by non-flying mammals in Asia. Nineteen pollinator species have been recorded and pollination systems have been categorized into four types. An examination of the relationship between Mucuna species and their pollinators from the lineage perspective revealed that all species in Mucuna, subgenus Macrocarpa, which are distributed in Asia, are pollinated exclusively by non-flying mammals, f.e. from squirrel species.

Read whole paper in our scientific journal Plant Biology (2023) DOI: 10.1111/plb.13557.

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In their review "Recent advances in the genetics underlying wheat grain protein content (GPC) and grain protein deviation (GPD) in hexaploid wheat", the authors Paina and Gregersen summarize the scientific findings about the genetics underlying wheat GPC and GPD, representing the relationship between grain protein content and yield), together with the performance of genomic prediction models characterizing these traits. A total of 364 significant loci related to GPC and GPD are positioned on the hexaploid wheat genome, one of the most important global crops which therefore is of major interest in breeding programs.

Read whole paper in our scientific journal Plant Biology (2023) DOI: 10.1111/plb.13550 (Open Access)

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In their article "Molecular gibberellin (GA) pathways as conserved integrators for adaptive responses" Bouré and Arnaud summarize the elements of GA metabolism and signalling pathways, with emphasis on the key role of the GA/GID1/DELLA complex as a conserved developmental integrator. They also discuss how the GA signalling pathway - together with feedback regulation on GA metabolism -  contributes to the integration of endogenous and exogenous signals to provide an adaptive output.

Read whole paper in our scientific journal Plant Biology (2023). DOI: 10.1111/plb.13549.

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The autors Touhami et al. review the current state of knowledge on the effects of climate change on sclerophyllous and semi-deciduous forest ecosystems in Tunisia. They found alarming results concerning the tree cover lost to fires, as well as shifted phenological parameters like start and end of the green season. And they call upon scientists, policymakers, and managers to adapt Mediterranean forests to climate change.

Read whole paper in our scientific journal Plant Biology (2023). DOI: 10.1111/plb.13524

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