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Chemical signals from microalgae that structure the marine environment


Dr. Georg Pohnert from the Friedrich Schiller University in Jena, Germany gives a seminar at the Lovéncentre Tjärnö.

Algae have established means to interact with other organisms in their environment. Especially interactions mediated by chemical compounds have gained a lot of attention during the last years. Algal exudates and metabolites stored in the cells can mediate feeding activity of herbivores and algal / algal interactions but also communication of an
alga with the surrounding microbial community.

I will introduce an approach to address such chemically mediated interactions based on the metabolomic investigation of the
cellular and released metabolites. We develop elaborate mass spectrometric methods that reveal how algae exploit a high plasticity of metabolite production during their development. Bioassays that are guided by metabolomic evidence reveal that these specific compounds can mediate mate finding, chemical defense or algal / algal interactions in a highly dynamic manner. Examples of diatom defense against
herbivores, bacteria and of diatom-diatom interactions will be introduced. Consequences for future investigations of plankton ecology, algal physiology and chemical interactions are discussed.

The remote conference system in the Lecture Hall will be used during the presentation, information on how to connect will be sent out before the event.

Föreläsare: Dr. Georg Pohnert from the Friedrich Schiller University in Jena, Germany

Datum: 2017-10-13

Tid: 11:00 - 12:00

Kategorier: Naturvetenskap

Arrangör: Department of marine sciences

Plats: Lovéncentret Tjärnö, 452 96 Strömstad
Big lecture hall

Ytterligare information:

Kontaktperson: Pierre de Wit

Sidansvarig: Bo Johannesson|Sidan uppdaterades: 2015-06-30

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