Molecular Proxies for Climate Maladaptation in a Long-Lived Tree (Pinus pinaster Aiton, Pinaceae).

Details

Serval ID
serval:BIB_9529A8B892B8
Type
Article: article from journal or magazin.
Collection
Publications
Title
Molecular Proxies for Climate Maladaptation in a Long-Lived Tree (Pinus pinaster Aiton, Pinaceae).
Journal
Genetics
Author(s)
Jaramillo-Correa J.P., Rodríguez-Quilón I., Grivet D., Lepoittevin C., Sebastiani F., Heuertz M., Garnier-Géré P.H., Alía R., Plomion C., Vendramin G.G., González-Martínez S.C.
ISSN
1943-2631 (Electronic)
ISSN-L
0016-6731
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
199
Number
3
Pages
793-807
Language
english
Abstract
Understanding adaptive genetic responses to climate change is a main challenge for preserving biological diversity. Successful predictive models for climate-driven range shifts of species depend on the integration of information on adaptation, including that derived from genomic studies. Long-lived forest trees can experience substantial environmental change across generations, which results in a much more prominent adaptation lag than in annual species. Here, we show that candidate-gene SNPs (single nucleotide polymorphisms) can be used as predictors of maladaptation to climate in maritime pine (Pinus pinaster Aiton), an outcrossing long-lived keystone tree. A set of 18 SNPs potentially associated with climate, 5 of them involving amino acid-changing variants, were retained after performing logistic regression, latent factor mixed models, and Bayesian analyses of SNP-climate correlations. These relationships identified temperature as an important adaptive driver in maritime pine and highlighted that selective forces are operating differentially in geographically discrete gene pools. The frequency of the locally advantageous alleles at these selected loci was strongly correlated with survival in a common garden under extreme (hot and dry) climate conditions, which suggests that candidate-gene SNPs can be used to forecast the likely destiny of natural forest ecosystems under climate change scenarios. Differential levels of forest decline are anticipated for distinct maritime pine gene pools. Geographically defined molecular proxies for climate adaptation will thus critically enhance the predictive power of range-shift models and help establish mitigation measures for long-lived keystone forest trees in the face of impending climate change.
Keywords
climate adaptation, environmental associations, genetic lineages, single nucleotide polymorphisms, fitness estimates
Pubmed
Web of science
Open Access
Yes
Create date
16/02/2015 21:36
Last modification date
20/08/2019 15:57
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