A metapopulation model for the introgression from genetically modified plants into their wild relatives

Details

Serval ID
serval:BIB_501F4A24B136
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
A metapopulation model for the introgression from genetically modified plants into their wild relatives
Journal
Evolutionary Applications
Author(s)
Meirmans P.G., Bousquet J., Isabel N.
ISSN
1752-4571
Publication state
Published
Issued date
2009
Peer-reviewed
Oui
Volume
2
Number
2
Pages
160-171
Language
english
Abstract
Most models on introgression from genetically modified (GM) plants have focused on small spatial scales, modelling gene flow from a field containing GM plants into a single adjacent population of a wild relative. Here, we present a model to study the effect of introgression from multiple plantations into the whole metapopulation of the wild relative. The most important result of the model is that even very low levels of introgression and selection can lead to a high probability that the transgene goes to fixation in the metapopulation. Furthermore, the overall frequency of the transgene in the metapopulation, after a certain number of generations of introgression, depends on the population dynamics. If there is a high rate of migration or a high rate of population turnover, the overall transgene frequency is much higher than with lower rates. However, under an island model of population structure, this increased frequency has only a very small effect on the probability of fixation of the transgene. Considering these results, studies on the potential ecological risks of introgression from GM plants should look not only at the rate of introgression and selection acting on the transgene, but also at the metapopulation dynamics of the wild relative.
Keywords
Gene Flow, Genetically Modified Organisms, Introgression, Population Structure, Transgene, Rape Brassica-Napus , Mediated Gene Flow, Oilseed Rape, Subdivided Population, Fixation Probability, Landscape-Level, Effective Size, Mutant Genes, Fitness
Web of science
Open Access
Yes
Create date
28/10/2009 16:24
Last modification date
20/08/2019 14:06
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