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Oct 6th: Marc-André SELOSSE
6 October 2017 @ 14 h 30 min - 16 h 00 min UTC+1
Equipe Interactions et Evolution Végétale et Fongique
Muséum National d’Histoire Naturelle
Institut de Systématique, Évolution, Biodiversité
ISYEB- UMR 7205 – CNRS, MNHN, UPMC, EPHE
The evolution of interdependency between symbiotic organisms by neutral evolution
Symbiosis evolution is often viewed as a progress, with emergence of new adaptive properties. However, symbiosis also enhances the interdependence between partners. I describe several such interdependences, and emphasize that they arise without emergence of new property. Generally, when two partners permanently interact, a mutation in one partner can be complemented by the other. Independency is then lost without any positive selection, in a neutral evolution. The accumulation of such steps makes the reversion to independency unlikely, and drives interdependency in symbiosis.
Invited by Thomas Pradeu
More about marc-André Selosse here.