Actualia · Tagungsbericht

Strasburger Hot Topic: Co und Posttranslationelle Kontrolle in Chloroplasten

Die mehr als 50 Teilnehmenden versammelten sich für ein Foto im Heereman’schen Hof der Universität Münster. Foto: Florian Kotnik
Lebhafte Diskussionen entwickelten sich während der Poster-Session, bei der 20 Forschende im frühen Karrierestadium ihre Forschungsergebnisse präsentierten. Foto: Florian Kotnik
Der Preis für den besten wissenschaftlichen Kurzvortrag eines Nachwuchswissenschaftlers oder einer Nachwuchswissenschaftlerin wurde an Lena Osterhoff vergeben, zusammen mit einen Geschenk des Organisators Jürgen Eirich. Foto: Florian Kotnik
Yu Ogawa erhielt den Preis für das beste Poster und erhielt einen Rucksack von Organisator Jürgen Eirich als Geschenk. Foto: Florian Kotnik

Das aktuelle Strasburger Hot Topic Symposium zum Thema „Co- und Posttranslationale Kontrolle in Chloroplasten“ fand im November 2024 an der Universität Münster statt. Es brachte mehr als 50 Forscher*innen aus sechs Ländern zusammen, die die neuesten Entwicklungen in der Kontrolle von Chloroplastenfunktionen diskutierten und sich über Fortschritte in unserem Verständnis von co- und posttranslationalen Modifikationen, Proteininteraktionen und Stressreaktionen in Chloroplasten austauschten.

34 Early Career Researchers (ERCs), including MSc and PhD students as well as postdoctoral fellows, participated at the symposium. The meeting was free of charge for ECR’s thanks to generous funding by the German Society for Plant Sciences (DBG). A travel stipend from the Federation of European Societies of Plant Physiology (FESPB) enabled the attendance of two ERCs from Italy. In addition, the conference was co-financed via a module workshop from a DFG-ANR research grant to invite 10 renowned speakers. 12 ECRs gave oral presentations on their research and received vivid feedback from senior colleagues.

Evolution, modification, interactions and reactions

Several key areas dominated the scientific program, especially the activity and evolution of RuBisCO, the regulation of cyclic electron transfer as well as co- and post-translational modifications, protein interactions, and stress reactions within chloroplasts. Researchers shared their latest results on critical regulatory mechanisms, shedding light on complex phenomena such as protein stability, enzyme activity, and plant growth and new hypotheses and findings were discussed at the symposium.

On Monday, November 18th, the symposium kicked off with an engaging session focusing on "Protein Structure and Evolution" with invited speakers and an oral presentation from the PhD student Jens Mühlenbeck, who co-organised the conference together with the post-doctoral researcher Jürgen Eirich from the group of Iris Finkemeier at the University of Münster.

Functions, adaptions, protein life and proton motive force

Later that day, a poster session allowed almost 20 early career researchers to showcase their work, sparking lively peer-to-peer discussions. Among the poster topics were studies exploring novel approaches to investigate chloroplast functions under varying conditions, highlighting molecular determinants influencing protein half-life, examining how plants adapt to excessive sugar levels, and developing tools for analysing proton motive forces.

Throughout Tuesday, November 19th, four thematically matching sessions explored different facets of environmental acclimation and photosynthesis. Young and invited speakers aside tackled subjects ranging from cyclic electron flow, to various other aspects of photosynthesis, and characterizing chloroplast  protein modifications. Other notable contributions explored the functional architecture of photosystems.

On Wednesday morning, protein import, (mis)translation, and quality control concluded the presentations.

Dedicated audience delighted early career researcher

Attendees praised the inclusive atmosphere fostered by this particular conference format, allowing ECRs and established investigators to contribute not only posters but also talks to the program. “It was a great opportunity to present my research in front of such a dedicated audience” said Tim Demmig (PhD student at Ruhr University Bochum), after his talk on photosynthetic acclimation mediated by chloroplast localized kinases.

Best poster and talk prizes

The oral presentation on STIC2 (SUPPRESSOR OF TIC40 2) and its selective binding to ribosome-nascent chain complexes in the co-translational sorting of Arabidopsis thylakoid proteins by Lena Osterhoff (PhD student at Ruhr University Bochum) was selected as best short talk, while Yu Ogawa (Post Doc at University of Münster) won the prize for the best poster, entitled “A dynamin-like protein FZL shapes thylakoid membranes and maintains their integrity against enhanced proton motive force”.

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In November 2024

Dr. Jürgen Eirich and Jens Mühlenbeck, https://www.uni-muenster.de/Biologie.IBBP/agfinkemeier/

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