Anne Weiß
Research project
Ulva mutabilis is developing properly only in association with the two bacterial strains Roseobacter sp. and Cytophaga sp. or their morphogenetic compounds extracted from the bacterial supernatant. The Roseobacter species exhibits a specific chemotactic affinity to the rhizoid cells of U. mutabilis and seems to cooperate with the Cytophaga strain and the alga by chemical communication. We are interested in the cross-kingdom cross-talk and interaction from the "first contact" of axenic U. mutabilis gametes with its symbiotic bacteria till the formation of a tripartite system. This includes: (i) the localisation of epiphytic bacteria and the monitoring of biofilm formation, (ii) metabolic changes in gametes and bacteria during "first contact" and (iii) the identification of the bacterial perception system. This project is funded by the Jena School for Microbial Communication (JSMC).
Publications
Alsufyani T., Califano G., Deicke M., Grueneberg J., Weiss A., Engelen A.H., Kwantes M., Mohr J.F., Ulrich J.F., Wichard T.* (2020) Macroalgal–bacterial interactions: identification and role of thallusin in morphogenesis of the seaweed Ulva (Chlorophyta), Journal of Experimental Botany 71: 3340-3349. https://doi.org/10.1093/jxb/eraa066External link
Kessler, R.W.1, Weiss, A.1, Kuegler, S., Hermes, C. Wichard, T.* (2018) Macroalgal-bacterial interactions: Role of dimethylsulfoniopropionate in microbial gardening by Ulva (Chlorophyta). Molecular Ecology 27: 1808-1819External link.
Weiss, A., Costa, R., Wichard, T. (2017) Morphogenesis of Ulva mutabilis (Chlorophyta) induced by Maribacter species (Bacteroidetes, Flavobacteriaceae). Botanica Marina 60(2): 197-206. doi:10.1515/bot-2016-0083External link
Katsaros, C., Weiss, A., Llangos, I., Theodorou, I., Wichard, T. (2017) Cell structure and microtubule organisation during gametogenesis of Ulva mutabilis Føyn (Chlorophyta) Botanica Marina 60(2):123-135External link. doi:10.1515/bot-2016-0073External link
Alsufyani, T., Weiss, A., Wichard, T. (2017) Time Course Exo-Metabolomic Profiling in the Green Marine Macroalga Ulva (Chlorophyta) for Identification of Growth Phase-Dependent Biomarkers. Mar. Drugs15: 14. doi:10.3390/md15010014External link