Gene flow among wild and domesticated almond species: insights from chloroplast and nuclear markers

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Serval ID
serval:BIB_09BAD78BC553
Type
Article: article from journal or magazin.
Collection
Publications
Title
Gene flow among wild and domesticated almond species: insights from chloroplast and nuclear markers
Journal
Evolutionary Applications
Author(s)
Delplancke M., Alvarez N., Espíndola A., Joly H., Benoit L., Brouck E., Arrigo N.
ISSN
1752-4571
Publication state
Published
Issued date
2012
Peer-reviewed
Oui
Volume
5
Number
4
Pages
317-329
Language
english
Abstract
Hybridization has played a central role in the evolutionary history of domesticated plants. Notably, several breeding programs relying on gene introgression from the wild compartment have been performed in fruit tree species within the genus Prunus but few studies investigated spontaneous gene flow among wild and domesticated Prunus species. Consequently, a comprehensive understanding of genetic relationships and levels of gene flow between domesticated and wild Prunus species is needed. Combining nuclear and chloroplastic microsatellites, we investigated the gene flow and hybridization among two key almond tree species, the cultivated Prunus dulcis and one of the most widespread wild relative Prunus orientalis in the Fertile Crescent. We detected high genetic diversity levels in both species along with substantial and symmetric gene flow between the domesticated P. dulcis and the wild P. orientalis. These results were discussed in light of the cultivated species diversity, by outlining the frequent spontaneous genetic contributions of wild species to the domesticated compartment. In addition, crop-to-wild gene flow suggests that ad hoc transgene containment strategies would be required if genetically modified cultivars were introduced in the northwestern Mediterranean.
Keywords
Amygdalus, gene flow, genetic diversity, introgression, microsatellites, Prunus dulcis
Web of science
Open Access
Yes
Create date
28/11/2011 15:45
Last modification date
20/08/2019 13:31
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