Dr. Clemens Rössner

_{Justus-Liebig-Universität Gießen}

_{Institut für Botanik}

_{AG Entwicklungsbiologie der Pflanzen}

_{Heinrich-Buff-Ring 38}

_{35392 Gießen}

_{Tel. +49 641 99-35202}

Clemens.Roessner@bot1.bio.uni-giessen.de

Wissenschaftliche Laufbahn:

2013-2017       Bachelor of Science Biologie, Justus-Liebig-Universität Gießen

2017-2019       Master of Science Biologie, Justus-Liebig-University Gießen

2020 -11/2025 Doktorand, Justus-Liebig-Universität Gießen, AG Entwicklungsbiologie der Pflanzen

12/2025 -jetzt  Wissenschaftlicher Mitarbeiter der AG Entwicklungsbiologie der Pflanzen und Koordinator im Rahmen der DFG geförderten                                        Forschungsgruppe ICIPS

Publikationen:

• Garrecht J,  Rössner C, Sreechakram VNS, Li Q, Braun S, F Golz JF, Becker A (2026) 800 million years of co-evolution in the green plant lineage – the case of LEUNIG and SEUSS transcriptional co-regulators. Molecular Biology and Evolution, msag154, https://doi.org/10.1093/molbev/msag154
• Rössner L-H, Rössner C,  Kong D, Lotz D, Weisert A, Yamada Y, Sato F, Davies K, Rupp O, Fuchs J, Baldwin EA, Lovell J, McKain MR, Barry K, Bruna T, Talag J, Jenkins J, Walstead R, Grimwood J, Schmutz J, Leebens-Mack JH, Becker A (2026) Gene and genome duplications have contrasting impacts on biosynthetic and flower developmental pathways in California poppy. The Plant Cell. https://doi.org/10.1093/plcell/koag039
• Lotz D, Rössner L-H, Ehlers K, Kong D, Rössner C, Rupp O, Becker A (2024) Conservation of the dehiscence zone gene regulatory network in dicots and the role of the SEEDSTICK ortholog of California poppy (Eschscholzia californica) in fruit development. Accepted at BMC Evodevo
• Rössner C, Griep S, Becker A (2024) A land plant phylogenetic framework for GLABROUS INFLORESCENCE STEMS (GIS), SUPERMAN, JAGGED and allies plus their TOPLESS co-repressor. Molecular Phylogenetics and Evolution, Vol.201, https://doi.org/10.1016/j.ympev.2024.108195
• Rupp O, Roessner C, Lederer-Ponzer N, Wollenweber TE, Becker A, Lamaoui M. (2024) Genome of Argania spinosa L.: insights into oil production and the tocopherol biosynthesis pathway. Genetic Resources and Crop Evolution, 1-16. https://doi.org/10.1007/s10722-024-01931-6
• Pramanik D, Becker A, Roessner C, Rupp O, Bogarín D, et al. (2023) Evolution and development of fruits of Erycina pusilla and other orchid species. PLOS ONE 18(10): e0286846. https://doi.org/10.1371/journal.pone.0286846
• Gust A, Yang Y, Steidele C, Rössner C, Löffelhardt B, Kolb B, Leisen T, Zhang W, Ludwig C, Felix, Seidl MF, Becker A,  Nurnberger T, Hahn M, Gust B, Gross H, Hückelhoven R. 2023. Convergent evolution of plant pattern recognition receptors sensing cysteine-rich patterns from three microbial kingdoms. Nature communications,14:3621, doi.org/10.1038/s41467-023-39208-8 
• Roessner C, Bhide AS, Hoffmeier A, Schenk J, Groß T, Gramzow L, Theißen G, Becker A (2023) Conservation of the restricted expression  of Brassicaceae Bsister-like genes in seeds requires a transposable element in Arabidopsis thaliana.Molecular Biology and Evolution, Vol 40, Issue5 https://doi.org/10.1093/molbev/msad114
• Marchant DB, Chen G, Cai S, Chen F, Schafran P, Jenkins J, Shu S, Plott C, Webber J, Lovell J T, He G, Sandor L, Williams M, Rajasekar S, Healey A, Barry K, Zhang Y, Sessa E, Dhakal R, Wolf PG, Harkess A, Li F-W, Rössner C, Becker A, Gramzow L, Xue D, Wu Y, Tong T, Wang Y, Dai F, Hua S, Wang H, Xu S, Xu F, Duan H, Theißen T, McKain M, Li Z, McKibben MTW, Barker MS, Schmitz RJ, Stevenson D, Zumajo-Cardona C, Ambrose BA, Leebens-Mack JH, Grimwood J, Schmutz J, Soltis PS, Soltis DE, Chen ZH  (2022)  Dynamic genome evolution in a model fern. Nat. Plants. https://doi.org/10.1038/s41477-022-01226-7
• Rössner C, Lotz D, Becker A (2022) VIGS Goes Viral: How VIGS Transforms Our Understanding of Plant Science. Annual Reviews of Plant Biology,73:703-28, https://doi.org/10.1146/annurev-arplant-102820-020542
• Kivivirta K, Herbert D, Roessner C, de Folter S, Marsch-Martinez N, Becker A (2020) Transcriptome analysis of gynoecium morphogenesis uncovers the chronology of gene regulatory network activity. Plant Physiology 185: 1076-1090, doi:10.1093/plphys/kiaa090

Skills:

Molecular phylogenetics, transcriptome analyses, molecular cloning, plant transformation (particle gun and floral dip), gene silencing (VIGS), plant tissue culture, bioinformatics (experiences with different tools e.g. IQTREE, ORTHOFINDER, GENESPACE, MCSCANX, SYRI, DSEQ2, AlphaFold etc. (on de.NBI-Cloud) and basic R coding), data visualization and teaching of bachelor and master classes