Ven. 23/10/2020 11:30 Andromede, Bâtiment 11, Etage 3 (à confirmer)
HELENE De Maleprade (University of Cambridge (UK))
Shape and coordinated motion in the simplest multicellular alga
Microscopic green algae are commonly found in mud, puddles or lakes, and show great diversity in structural complexity. The unicellular Chlamydomonas exhibits two flagella whose beating enables it to swim in a breast stroke towards light, a nowadays widely studied behaviour favouring photosynthesis. One also finds Gonium, an algae made of 16 Chlamydomonas-like cells. It is flat and squared, with all flagella on one side of the plate. This simple algae is a key organism to understand the evolution from unicellular to multicellular coherent behaviour.
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