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GENETICS AND EVOLUTION OF PLANT DIVERSITY

GENETICS AND EVOLUTION OF PLANT DIVERSITY

Our research team analyses molecular mechanisms that contribute to generate the enormous diversity of land plants. These processes are key to understand how our extant land plant species adapted to extremely variable conditions such that they can grow and propagate in almost all climate zones. We investigate transcription factors that control plant development and thereby shape plant morphogenesis. We conduct comparative research approaches using classical plant model organisms, such as Arabidopsis thaliana together with other evolutionary informative angiosperm and basal land plant species. Current research focuses on the liverwort Marchantia polymorpha to unravel the role of redox-processes in developmental processes and for an adaptation to a terrestrial plant life style.


INVESTIGATED MODEL ORGANISMS

Investigated model organisms

METHODS

HOW WE WORK

We apply a combination of diverse genetic (genome editing), biochemical (redox-EMSAs, Y2H), transcriptome (RNAseq), microscopy (FRET-FLIM, superresolution) and expression (whole mount/in situ mRNA, fluorescent-reporters) studies.

Our methods
RESEARCH

RESEARCH TOPICS


During the evolution from aquatic streptophyte algae to land plants, the mechanism of cell division changed from centripetal to centrifugal cytokinesis relying on the phragmoplast, an evolutionary novelty. <br> Buschmann and Zachgo; Trends in Plant Science, 2016
Genome sequence analysis of Marchantia polymorpha revealed that almost all land plant transcription factor families already exist in this basal land plant - but with lower gene numbers per family. <br>Bowman et al. (Marchantia Genome consortium); Cell, 2017
The Marchantia Mp<i>TCP1</i> transcription factor exerts a crucial role in redox and cell proliferation processes.<br>
      Busch et al.; New Phytologist, 2019

The regulatory activity of CC-type glutaredoxins (ROXYs) and their redox-sensitive DNA binding with TGA transcription factors has been conserved during land plant evolution. <br>Gutsche et al.; Plant Direct, 2017
The liverwort <i>Riccia fluitans</i> can live in water and on land, making it ideal to study terrestrial adaptation processes. We are currently establishing transformation and sexual structure induction methods. <br>Althoff and Zachgo; International Journal of Molecular Sciences, 2020
The Botanical Garden of the University of Osnabrueck has initiated two national biodiversity protection networks. The German crop wild relative gene bank (WEL) is a wild plant 
seed ex situ ressource for breeding and research (https://www.genbank-wel.uni-osnabrueck.de/index.php/en/). The national WIPS.De (Wildpflanzenschutz-Deutschland) project protects 92 wild plant species for which Germany has taken a special responsibility by combining ex situ and in situ approaches (https://www.wildpflanzenschutz.uni-osnabrueck.de).

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PUBLICATIONS

SELECTED PUBLICATIONS

Maß L., Holtmannspötter M., Zachgo S. (2020) Dual-color 3D-dSTORM colocalization and quantification of ROXY1 and RNAPII variants throughout the transcription cycle in root meristem nuclei. The Plant Journal, DOI 10.111/tpj.14986.

Althoff F., Zachgo S. (2020) Transformation of Riccia fluitans, an amphibious liverwort dynamically responding to environmental changes. International Journal of Molecular Sciences 21(15), 5410. DOI.org/10.3390/ijms21155410.

Busch A., Deckena M., Almeida-Trapp M., Kopischke S., Kock C., Schuessler E., Tsiantis M., Mithofer A., Zachgo S. (2019) MpTCP1 controls cell proliferation and redox processes in Marchantia polymorpha. New Phytologist, DOI 10.1111/nph.16132.

Nishiyama T., et al. (Chara genome consortium), Zachgo S., Langdale J., Maumus F., Van Der Straeten D., Gould S.B., Rensing S.A. (2018) The Chara genome: secondary complexity and implications for plant terrestrialization. Cell 174, 448-464.

Gutsche N., Holtmannspötter M., Maß L., O’Donoghue M., Busch A., Lauri A., Schubert V., Zachgo S. (2017) Conserved redox-dependent DNA binding of ROXY glutaredoxins with TGA transcription factors. Plant Direct, DOI 10.1002/pld3.30.

Bowman J.L. et al. (Marchantia genome consortium), Zachgo S., Schmutz J. (2017) Insights into Land Plant Evolution Garnered from the Marchantia polymorpha Genome. Cell 171, 287-304.

Buschmann H., Zachgo S. (2016) The evolution of cell division: from streptophyte algae to land plants. Trends in Plant Science, 21, 872-883.

Gutsche N., Thurow C., Zachgo S., Gatz C. (2015) Plant-specific CC-type glutaredoxins: functions in developmental processes and stress response. Biol Chem., 396, 495-509.

Horn S., Pabón-Mora N., Theuß V.S., Busch A., Zachgo S. (2014) Analysis of the CYC/TB1 class of TCP transcription factors in basal angiosperms and magnoliids. The Plant Journal 81, 559-571.


BOTANICAL GARDEN

Borgmann P., Burkart M., Lauterbach D., Listl D., Martens A., Nick P., Oevermann S., Poschlod P., Radkowitsch A., Reisch C., Stevens A.-D., Straubinger C., Zippel E., Zachgo S. (2015) WIPs-De: Wildpflanzenschutz Deutschland - Ein Projekt des Bundesprogramms zur Biologischen Vielfalt. Natur und Landschaft 90, Heft 12, S. 550-555.

Borgmann P., Oevermann S., Friesen N. und Zachgo S. (2014) Die Genbank für Wildpflanzen für Ernährung und Landwirtschaft (WEL). In: Poschlod P., Borgmann P., Listl D., Reisch C. Zachgo S. (eds.): Handbuch Genbank WEL. Regensburg: HOPPEA Denkschriften der Regensburgischen Botanischen Gesellschaft, 41-69.


TEAM
Our team

CONTACT

GET IN TOUCH

You would like to join our team? BSc and MSc students are always welcome. If you are interested in a PhD or postdoc, please contact us to see what can be arranged.

Sabine Zachgo
Prof. Dr. rer. nat.
Division of Botany
Director of the Botanical Garden
+49 541 969 2840
szachgo(at)uni-osnabrueck.de
Division of Botany: Barbarastr. 11, D-49076 Osnabrück
Botanical Garden: Albrechtstr. 11, D-49076 Osnabrück