Consequences of Asexuality in Natural Populations: Insights from Stick Insects.

Détails

Ressource 1Télécharger: msy058.pdf (402.05 [Ko])
Etat: Serval
Version: Author's accepted manuscript
ID Serval
serval:BIB_00D517ACA82A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Consequences of Asexuality in Natural Populations: Insights from Stick Insects.
Périodique
Molecular biology and evolution
Auteur(s)
Bast J., Parker D.J., Dumas Z., Jalvingh K.M., Tran Van P., Jaron K.S., Figuet E., Brandt A., Galtier N., Schwander T.
ISSN
1537-1719 (Electronic)
ISSN-L
0737-4038
Statut éditorial
Publié
Date de publication
01/07/2018
Peer-reviewed
Oui
Volume
35
Numéro
7
Pages
1668-1677
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Recombination is a fundamental process with significant impacts on genome evolution. Predicted consequences of the loss of recombination include a reduced effectiveness of selection, changes in the amount of neutral polymorphisms segregating in populations, and an arrest of GC-biased gene conversion. Although these consequences are empirically well documented for nonrecombining genome portions, it remains largely unknown if they extend to the whole genome scale in asexual organisms. We identify the consequences of asexuality using de novo transcriptomes of five independently derived, obligately asexual lineages of stick insects, and their sexual sister-species. We find strong evidence for higher rates of deleterious mutation accumulation, lower levels of segregating polymorphisms and arrested GC-biased gene conversion in asexuals as compared with sexuals. Taken together, our study conclusively shows that predicted consequences of genome evolution under asexuality can indeed be found in natural populations.
Mots-clé
Animals, Gene Conversion, Genetic Variation, Insecta/genetics, Mutation Accumulation, Reproduction, Asexual, Selection, Genetic, Silent Mutation
Pubmed
Web of science
Open Access
Oui
Création de la notice
09/04/2018 14:21
Dernière modification de la notice
01/07/2019 6:10
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