Canadian Forest Service Publications
Convergent local adaptation to climate in distantly related conifers. 2016. Yeaman, S.; Hodgins, K.A.; Lotterhos, K.E.; Suren, H.; Nadeau, S.; Degner, J.C.; Nurkowski, K.A.; Smets, P.; Wang, T.; Gray, L.K.; Liepe, K.J.; Hamann, A.; Holliday, J.A.; Whitlock, M.C.; Rieseberg, L.H.; Aitken, S.N. Science volume 353 page 1431-1434.
Year: 2016
Issued by: Laurentian Forestry Centre
Catalog ID: 41045
Language: English
Availability: PDF (request by e-mail)
Available from the Journal's Web site. †
DOI: 10.1126/science.aaf7812
† This site may require a fee
Abstract
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.
