Transregional Collaborative Research Center (Transregio-SFB) Roseobacter

Project C5: Systems biology of the environmental adaptation of Dinoroseobacter shibae

The goal of this project is to obtain a theoretical understanding of two important adaptation strategies: The use of light as an additional energy source, and phenotypic heterogeneity of an isogenic population. Phenotypical heterogeneity was shown in roseobacters for bacteriochlorophyll synthesis, cell morphology, mode of cell division, flagella formation, type IV secretion, and synthesis of the gene transfer agent. In D. shibae it is under the control of quorum sensing, and non-heterogeneous mutants are available. Heterogeneity can also be induced by cultivation conditions. Selection for different phenotypes will be studied in different experimental systems (biofilm, alga-bacterium interaction, protozoan grazing) to identify potential underlying bet-hedging strategies. Evolutionary models will be constructed from these data. 



Carl von Ossietzky Universität Oldenburg
Institute for Chemistry and Biology of the Marine Environment

Technische Universität Braunschweig
Institute of Microbiology
Institute of Organic Chemistry
Department of Bioinformatics and Biochemistry
Institute of Biochemical Engineering

Leibniz-Institut DSMZ- Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH
Molecular Systematics

Göttingen Genomics Laboratory
Department of Genomics and Applied Microbiology


  • Prof Dr Irene Wagner-Döbler

    Irene Wagner-Döbler

    Head of the Research Group Microbial Communication

    +49 531 6181-3080

    +49 531 6181-3096


    CV and Publications



Prof Dr D. Jahn, Dr Richard Münch


Funding Agency

DFG - German Research Foundation