Between but Not Within-Species Variation in the Distribution of Fitness Effects
BASTIEN, Catherine
Département écologie et biodiversité des milieux forestiers, prairiaux et aquatiques [ECODIV]
Département écologie et biodiversité des milieux forestiers, prairiaux et aquatiques [ECODIV]
BENOIT, Vanina
Biologie intégrée pour la valorisation de la diversité des Arbres et de la Forêt [BioForA]
Biologie intégrée pour la valorisation de la diversité des Arbres et de la Forêt [BioForA]
BURET, Corinne
Biologie intégrée pour la valorisation de la diversité des Arbres et de la Forêt [BioForA]
Biologie intégrée pour la valorisation de la diversité des Arbres et de la Forêt [BioForA]
CERVANTES, Sandra
University of Oulu [Finland] = Oulun yliopisto [Suomi] = Université d'Oulu [Finlande]
< Réduire
University of Oulu [Finland] = Oulun yliopisto [Suomi] = Université d'Oulu [Finlande]
Langue
en
Article de revue
Ce document a été publié dans
Molecular Biology and Evolution. 2023-11-03, vol. 40, n° 11
Oxford University Press (OUP)
Résumé en anglais
New mutations provide the raw material for evolution and adaptation. The distribution of fitness effects (DFE) describes the spectrum of effects of new mutations that can occur along a genome, and is, therefore, of vital ...Lire la suite >
New mutations provide the raw material for evolution and adaptation. The distribution of fitness effects (DFE) describes the spectrum of effects of new mutations that can occur along a genome, and is, therefore, of vital interest in evolutionary biology. Recent work has uncovered striking similarities in the DFE between closely related species, prompting us to ask whether there is variation in the DFE among populations of the same species, or among species with different degrees of divergence, that is whether there is variation in the DFE at different levels of evolution. Using exome capture data from six tree species sampled across Europe we characterized the DFE for multiple species, and for each species, multiple populations, and investigated the factors potentially influencing the DFE, such as demography, population divergence, and genetic background. We find statistical support for the presence of variation in the DFE at the species level, even among relatively closely related species. However, we find very little difference at the population level, suggesting that differences in the DFE are primarily driven by deep features of species biology, and those evolutionarily recent events, such as demographic changes and local adaptation, have little impact.< Réduire
Mots clés en anglais
DFE
Deleterious mutations
Population structure
Forest trees
Origine
Importé de halUnités de recherche