Detecting directional epistasis and dominance ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Detecting directional epistasis and dominance from cross-line analyses in alpine populations of Arabidopsis thaliana
Auteur(s) :
Le Rouzic, Arnaud [Auteur]
Evolution, génomes, comportement et écologie [EGCE]
Roumet, Marie [Auteur]
Universität Bern = University of Bern = Université de Berne [UNIBE]
Widmer, Alex [Auteur]
Department of Integrative Biology [Zurich]
Clo, Josselin [Auteur]
Université de Lille
Centre National de la Recherche Scientifique [CNRS]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Evolution, génomes, comportement et écologie [EGCE]
Roumet, Marie [Auteur]
Universität Bern = University of Bern = Université de Berne [UNIBE]
Widmer, Alex [Auteur]
Department of Integrative Biology [Zurich]
Clo, Josselin [Auteur]
Université de Lille
Centre National de la Recherche Scientifique [CNRS]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Titre de la revue :
Journal of Evolutionary Biology
Pagination :
839-847
Éditeur :
Wiley
Date de publication :
2023-04-21
ISSN :
1010-061X
Discipline(s) HAL :
Sciences du Vivant [q-bio]
Résumé en anglais : [en]
The contribution of non-additive genetic effects to the evolutionary potential of populations has been a topic of theoretical and empirical interest for a long time. Yet, the empirical study of these effects in natural ...
Lire la suite >The contribution of non-additive genetic effects to the evolutionary potential of populations has been a topic of theoretical and empirical interest for a long time. Yet, the empirical study of these effects in natural populations remains scarce, perhaps because measuring dominance and epistasis relies on heavy experimental line crosses. In this study, we explored the contribution of dominance and epistasis in natural alpine populations of Arabidopsis thaliana, for two fitness-related traits, the dry weight and the number of siliques, measured in a greenhouse. We first found that, on average, crosses between inbred lines of A. thaliana led to mid-parent heterosis for the dry weight, but outbreeding depression for the number of siliques. While heterosis for the dry weight was due to dominance, we found that outbreeding depression for the number of siliques could be attributed to the breakdown of epistasis. We simulated and discussed the implication of these results for the adaptive potential of the studied populations, as well as the use of line-cross analyses to detect directional non-additive genetic effects.Lire moins >
Lire la suite >The contribution of non-additive genetic effects to the evolutionary potential of populations has been a topic of theoretical and empirical interest for a long time. Yet, the empirical study of these effects in natural populations remains scarce, perhaps because measuring dominance and epistasis relies on heavy experimental line crosses. In this study, we explored the contribution of dominance and epistasis in natural alpine populations of Arabidopsis thaliana, for two fitness-related traits, the dry weight and the number of siliques, measured in a greenhouse. We first found that, on average, crosses between inbred lines of A. thaliana led to mid-parent heterosis for the dry weight, but outbreeding depression for the number of siliques. While heterosis for the dry weight was due to dominance, we found that outbreeding depression for the number of siliques could be attributed to the breakdown of epistasis. We simulated and discussed the implication of these results for the adaptive potential of the studied populations, as well as the use of line-cross analyses to detect directional non-additive genetic effects.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Source :
Date de dépôt :
2024-10-10T03:01:11Z
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