Gene flow between wheat and wild relatives: empirical evidence from Aegilops geniculata, Ae. neglecta and Ae. triuncialis

Détails

ID Serval
serval:BIB_1678B719765F
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Gene flow between wheat and wild relatives: empirical evidence from Aegilops geniculata, Ae. neglecta and Ae. triuncialis
Périodique
Evolutionary Applications
Auteur(s)
Arrigo N., Gudagnuolo R., Lappe S., Pasche S., Parisod C., Felber F.
ISSN
1752-4571
Statut éditorial
Publié
Date de publication
2011
Peer-reviewed
Oui
Volume
4
Numéro
5
Pages
685-695
Langue
anglais
Résumé
Gene flow between domesticated species and their wild relatives is receiving growing attention. This study addressed introgression between wheat and natural populations of its wild relatives (Aegilops species). The sampling included 472 individuals, collected from 32 Mediterranean populations of three widespread Aegilops species (Aegilops geniculata, Ae. neglecta and Ae. triuncialis) and compared wheat field borders to areas isolated from agriculture. Individuals were characterized with amplified fragment length polymorphism fingerprinting, analysed through two computational approaches (i.e. Bayesian estimations of admixture and fuzzy clustering), and sequences marking wheat-specific insertions of transposable elements. With this combined approach, we detected substantial gene flow between wheat and Aegilops species. Specifically, Ae. neglecta and Ae. triuncialis showed significantly more admixed individuals close to wheat fields than in locations isolated from agriculture. In contrast, little evidence of gene flow was found in Ae. geniculata. Our results indicated that reproductive barriers have been regularly bypassed during the long history of sympatry between wheat and Aegilops.
Mots-clé
admixture, amplified fragment length polymorphism, crop-to-wild gene flow, introgression, transposable element-based markers
Web of science
Open Access
Oui
Création de la notice
15/05/2013 9:22
Dernière modification de la notice
20/08/2019 12:46
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