Convergent local adaptation to climate in distantly related conifers

When confronted with an adaptive challenge, such as extreme temperature, closely related species frequently evolve similar phenotypes using the same genes. Although such repeated evolution is thought to be less likely in highly polygenic traits and distantly related species, this has not been tested...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2016-09, Vol.353 (6306), p.1431-1433
Main Authors: Yeaman, Sam, Hodgins, Kathryn A., Lotterhos, Katie E., Suren, Haktan, Nadeau, Simon, Degner, Jon C., Nurkowski, Kristin A., Smets, Pia, Wang, Tongli, Gray, Laura K., Liepe, Katharina J., Hamann, Andreas, Holliday, Jason A., Whitlock, Michael C., Rieseberg, Loren H., Aitken, Sally N.
Format: Article
Language:English
Subjects:
Acclimatization - genetics
Adaptation
Biological evolution
Climate
Climate science
Cold Temperature
Conifers
Convergence
Duplicating milling machines
Evolution, Molecular
Flowers & plants
Gene Duplication
Genes
Genes, Plant - physiology
Genome, Plant
Genomes
Genotype & phenotype
Hot Temperature
Metagenomics
Picea - genetics
Picea - physiology
Pine
Pinus - genetics
Pinus - physiology
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Summary:When confronted with an adaptive challenge, such as extreme temperature, closely related species frequently evolve similar phenotypes using the same genes. Although such repeated evolution is thought to be less likely in highly polygenic traits and distantly related species, this has not been tested at the genome scale. We performed a population genomic study of convergent local adaptation among two distantly related species, lodgepole pine and interior spruce. We identified a suite of 47 genes, enriched for duplicated genes, with variants associated with spatial variation in temperature or cold hardiness in both species, providing evidence of convergent local adaptation despite 140 million years of separate evolution. These results show that adaptation to climate can be genetically constrained, with certain key genes playing nonredundant roles.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aaf7812