Broad-scale adaptive genetic variation in alpine plants is driven by temperature and precipitation.
Détails
Etat: Public
Version: de l'auteur⸱e
ID Serval
serval:BIB_8651B3434C5B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Broad-scale adaptive genetic variation in alpine plants is driven by temperature and precipitation.
Périodique
Molecular Ecology
Collaborateur⸱rice⸱s
IntraBioDiv Consortium
ISSN
1365-294X (Electronic)
ISSN-L
0962-1083
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
21
Numéro
15
Pages
3729-3738
Langue
anglais
Résumé
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.
Mots-clé
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
Oui
Création de la notice
13/02/2012 16:31
Dernière modification de la notice
20/08/2019 15:45