Evolution of self‐incompatibility in the Brassicaceae: Lessons from a textbook example of natural selection

Autor: Eléonore Durand, Maxime Chantreau, Audrey Le Veve, Roman Stetsenko, Manu Dubin, Mathieu Genete, Violaine Llaurens, Céline Poux, Camille Roux, Sylvain Billiard, Xavier Vekemans, Vincent Castric
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Evolutionary Applications, Vol 13, Iss 6, Pp 1279-1297 (2020)
Druh dokumentu: article
ISSN: 1752-4571
DOI: 10.1111/eva.12933
Popis: Abstract Self‐incompatibility (SI) is a self‐recognition genetic system enforcing outcrossing in hermaphroditic flowering plants and results in one of the arguably best understood forms of natural (balancing) selection maintaining genetic variation over long evolutionary times. A rich theoretical and empirical population genetics literature has considerably clarified how the distribution of SI phenotypes translates into fitness differences among individuals by a combination of inbreeding avoidance and rare‐allele advantage. At the same time, the molecular mechanisms by which self‐pollen is specifically recognized and rejected have been described in exquisite details in several model organisms, such that the genotype‐to‐phenotype map is also pretty well understood, notably in the Brassicaceae. Here, we review recent advances in these two fronts and illustrate how the joint availability of detailed characterization of genotype‐to‐phenotype and phenotype‐to‐fitness maps on a single genetic system (plant self‐incompatibility) provides the opportunity to understand the evolutionary process in a unique perspective, bringing novel insight on general questions about the emergence, maintenance, and diversification of a complex genetic system.
Databáze: Directory of Open Access Journals