Poster De Conférence Année : 2024

Frequent heterothallism in natural populations of Saccharomyces cerevisiae

Résumé

Understanding reproductive systems and their consequences on genetic diversity is a central question in evolutionary biology. This study focus on the prevalence of haploid selfing (mating between two haploid clones) in the budding yeast Saccharomyces cerevisiae. An experimental screen and bioinformatical predictions based on the genome sequences were performed on a collection of 117 strains from various ecological and geographical origins. We conclude that at least 26 strains (22%) are heterothallic i.e. unable to perform haploid selfing, and at least 49 (42%) are homothallic, i.e. able to perform haploid selfing. Heterothallism is present in different clades, and it is associated with genome-wide heterozygosity.

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hal-05563805 , version 1 (23-03-2026)

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  • HAL Id : hal-05563805 , version 1

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Nina Vittorelli, Cintia Gómez-Muñoz, Irina Andriushchenko, Nicolas Agier, Stéphane Delmas, et al.. Frequent heterothallism in natural populations of Saccharomyces cerevisiae. EMBO Workshop on Molecular mechanisms in evolution and ecology, Oct 2024, Heidelberg, Germany. ⟨hal-05563805⟩
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