Broad-scale adaptive genetic variation in alpine plants is driven by temperature and precipitation.
Details
State: Public
Version: author
Serval ID
serval:BIB_8651B3434C5B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Broad-scale adaptive genetic variation in alpine plants is driven by temperature and precipitation.
Journal
Molecular Ecology
Working group(s)
IntraBioDiv Consortium
ISSN
1365-294X (Electronic)
ISSN-L
0962-1083
Publication state
Published
Issued date
2012
Peer-reviewed
Oui
Volume
21
Number
15
Pages
3729-3738
Language
english
Abstract
Identifying adaptive genetic variation is a challenging task, in particular in non-model species for which genomic information is still limited or absent. Here, we studied distribution patterns of amplified fragment length polymorphisms (AFLPs) in response to environmental variation, in 13 alpine plant species consistently sampled across the entire European Alps. Multiple linear regressions were performed between AFLP allele frequencies per site as dependent variables and two categories of independent variables, namely Moran's eigenvector map MEM variables (to account for spatial and unaccounted environmental variation, and historical demographic processes) and environmental variables. These associations allowed the identification of 153 loci of ecological relevance. Univariate regressions between allele frequency and each environmental factor further showed that loci of ecological relevance were mainly correlated with MEM variables. We found that precipitation and temperature were the best environmental predictors, whereas topographic factors were rarely involved in environmental associations. Climatic factors, subject to rapid variation as a result of the current global warming, are known to strongly influence the fate of alpine plants. Our study shows, for the first time for a large number of species, that the same environmental variables are drivers of plant adaptation at the scale of a whole biome, here the European Alps.
Keywords
Adaptation, Physiological/genetics, Amplified Fragment Length Polymorphism Analysis, Climate, Environment, Europe, Gene Frequency, Genetic Variation, Genotype, Linear Models, Plants/genetics, Rain, Temperature
Pubmed
Web of science
Open Access
Yes
Create date
13/02/2012 16:31
Last modification date
20/08/2019 15:45