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Microbial impacts on insect evolutionary diversification: from patterns to mechanisms

Fabrice Vavre 1, 2 Natacha Kremer 2 
1 BAMBOO - An algorithmic view on genomes, cells, and environments
Inria Grenoble - Rhône-Alpes, LBBE - Laboratoire de Biométrie et Biologie Evolutive - UMR 5558
2 Génétique et évolution des interactions hôtes-parasites
GINSENG - Département génétique, interactions et évolution des génomes [LBBE]
Abstract : Symbiosis can favor rapid shifts in host phenotypic traits, particularly through the contribution of symbionts to the host's physiology. In addition, variations in the microbiota composition between individuals can be associated with pre-zygotic and post-zygotic barriers. All together, these phenomena may contribute to insect diversification and speciation. Recent advances have also shown that the host–microbiota molecular dialog, mediated notably by host immune and developmental pathways, is critical for the acquisition and control of the microbiota, and could also contribute to reproductive isolation. While still a controversial hypothesis, adaptation through symbiosis could thus trigger host–symbiont coevolution and accelerate differentiation.
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Fabrice Vavre, Natacha Kremer. Microbial impacts on insect evolutionary diversification: from patterns to mechanisms. Current Opinion in Insect Science, Elsevier, 2014, Molecular physiology/Environmental physiology, 4, pp.29--34. ⟨10.1016/j.cois.2014.08.003⟩. ⟨hal-01104106⟩



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