Genomic Features of Parthenogenetic Animals.
Détails
Demande d'une copie Sous embargo indéterminé.
Accès restreint UNIL
Etat: Public
Version: de l'auteur⸱e
Licence: CC BY 4.0
Accès restreint UNIL
Etat: Public
Version: de l'auteur⸱e
Licence: CC BY 4.0
ID Serval
serval:BIB_E1A133CAFF7A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Genomic Features of Parthenogenetic Animals.
Périodique
The Journal of heredity
ISSN
1465-7333 (Electronic)
ISSN-L
0022-1503
Statut éditorial
Publié
Date de publication
12/03/2021
Peer-reviewed
Oui
Editeur⸱rice scientifique
Orive Maria
Volume
112
Numéro
1
Pages
19-33
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Publication Status: ppublish
Résumé
Evolution without sex is predicted to impact genomes in numerous ways. Case studies of individual parthenogenetic animals have reported peculiar genomic features that were suggested to be caused by their mode of reproduction, including high heterozygosity, a high abundance of horizontally acquired genes, a low transposable element load, or the presence of palindromes. We systematically characterized these genomic features in published genomes of 26 parthenogenetic animals representing at least 18 independent transitions to asexuality. Surprisingly, not a single feature was systematically replicated across a majority of these transitions, suggesting that previously reported patterns were lineage-specific rather than illustrating the general consequences of parthenogenesis. We found that only parthenogens of hybrid origin were characterized by high heterozygosity levels. Parthenogens that were not of hybrid origin appeared to be largely homozygous, independent of the cellular mechanism underlying parthenogenesis. Overall, despite the importance of recombination rate variation for the evolution of sexual animal genomes, the genome-wide absence of recombination does not appear to have had the dramatic effects which are expected from classical theoretical models. The reasons for this are probably a combination of lineage-specific patterns, the impact of the origin of parthenogenesis, and a survivorship bias of parthenogenetic lineages.
Mots-clé
Animals, Biological Evolution, DNA Transposable Elements, Gene Transfer, Horizontal, Genome, Inverted Repeat Sequences, Mutation, Parthenogenesis/genetics, Selection, Genetic, heterozygosity, horizontal gene transfer, recombination, transposable elements
Pubmed
Web of science
Open Access
Oui
Financement(s)
Fonds national suisse / CRSII3_160723
Fonds national suisse / PP00P3_170627
Création de la notice
02/10/2020 9:00
Dernière modification de la notice
26/10/2021 6:38