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Adaptive Introgress...
Adaptive Introgression Facilitates Adaptation to High Latitudes in European Aspen (Populus tremula L.)
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- Rendón-Anaya, Martha (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology
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- Wilson, Jonathan (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology
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- Sveinsson, Sæmundur (author)
- Matis Ltd, Reykjavik, Iceland
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- Fedorkov, Aleksey (author)
- Institute of Biology, Komi Science Center, Russian Academy of Sciences, Syktyvkar, Russian Federation
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- Cottrell, Joan (author)
- Forest Research, Northern Research Station, Roslin, United Kingdom
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- Bailey, Mark E. S. (author)
- School of Life Sciences, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
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- Ruņis, Dainis (author)
- Genetic Resource Centre, Latvian State Forest Research Institute "silava", Salaspils, Latvia
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- Lexer, Christian (author)
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
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- Jansson, Stefan, 1959- (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Robinson, Kathryn M., 1975- (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Street, Nathaniel, 1979- (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Ingvarsson, Pär K. (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för växtbiologi,Department of Plant Biology
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(creator_code:org_t)
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- 2021-07-30
- 2021
- English.
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In: Molecular biology and evolution. - : Oxford University Press. - 0737-4038 .- 1537-1719. ; 38:11, s. 5034-5050
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Abstract
Subject headings
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- Understanding local adaptation has become a key research area given the ongoing climate challenge and the concomitant requirement to conserve genetic resources. Perennial plants, such as forest trees, are good models to study local adaptation given their wide geographic distribution, largely outcrossing mating systems, and demographic histories. We evaluated signatures of local adaptation in European aspen (Populus tremula) across Europe by means of whole-genome resequencing of a collection of 411 individual trees. We dissected admixture patterns between aspen lineages and observed a strong genomic mosaicism in Scandinavian trees, evidencing different colonization trajectories into the peninsula from Russia, Central and Western Europe. As a consequence of the secondary contacts between populations after the last glacial maximum, we detected an adaptive introgression event in a genome region of ∼500 kb in chromosome 10, harboring a large-effect locus that has previously been shown to contribute to adaptation to the short growing seasons characteristic of Northern Scandinavia. Demographic simulations and ancestry inference suggest an Eastern origin—probably Russian—of the adaptive Nordic allele which nowadays is present in a homozygous state at the north of Scandinavia. The strength of introgression and positive selection signatures in this region is a unique feature in the genome. Furthermore, we detected signals of balancing selection, shared across regional populations, that highlight the importance of standing variation as a primary source of alleles that facilitate local adaptation. Our results, therefore, emphasize the importance of migration–selection balance underlying the genetic architecture of key adaptive quantitative traits.
Subject headings
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Keyword
- adaptation
- balancing selection
- introgression
- postglacial colonization
- selective sweep
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Rendón-Anaya, Ma ...
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Wilson, Jonathan
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Sveinsson, Sæmun ...
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Fedorkov, Alekse ...
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Cottrell, Joan
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Bailey, Mark E. ...
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Ruņis, Dainis
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Lexer, Christian
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Jansson, Stefan, ...
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Robinson, Kathry ...
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Street, Nathanie ...
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Ingvarsson, Pär ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Genetics
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Evolutionary Bio ...
- Articles in the publication
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Molecular biolog ...
- By the university
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Umeå University
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Swedish University of Agricultural Sciences