Divergent patterns between phenotypic and genetic variation in Scots pine
In boreal forests, autumn frost tolerance in seedlings is a critical fitness component because it determines survival rates during regeneration. To understand the forces that drive local adaptation in this trait, we conducted freezing tests in a common garden setting for 54 Pinus sylvestris (Scots p...
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ftdoajarticles:oai:doaj.org/article:890ef2b2717a45c489b5d6cd38b88eff 2023-05-15T16:12:00+02:00 Divergent patterns between phenotypic and genetic variation in Scots pine David Hall Jenny Olsson Wei Zhao Johan Kroon Ulfstand Wennström Xiao-Ru Wang 2021-01-01T00:00:00Z https://doi.org/10.1016/j.xplc.2020.100139 https://doaj.org/article/890ef2b2717a45c489b5d6cd38b88eff EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2590346220301826 https://doaj.org/toc/2590-3462 2590-3462 doi:10.1016/j.xplc.2020.100139 https://doaj.org/article/890ef2b2717a45c489b5d6cd38b88eff Plant Communications, Vol 2, Iss 1, Pp 100139- (2021) clinal variation cold hardiness genetic diversity population structure Pinus sylvestris Botany QK1-989 article 2021 ftdoajarticles https://doi.org/10.1016/j.xplc.2020.100139 2022-12-31T10:53:53Z In boreal forests, autumn frost tolerance in seedlings is a critical fitness component because it determines survival rates during regeneration. To understand the forces that drive local adaptation in this trait, we conducted freezing tests in a common garden setting for 54 Pinus sylvestris (Scots pine) populations (>5000 seedlings) collected across Scandinavia into western Russia, and genotyped 24 of these populations (>900 seedlings) at >10 000 SNPs. Variation in cold hardiness among populations, as measured by QST, was above 80% and followed a distinct cline along latitude and longitude, demonstrating significant adaptation to climate at origin. In contrast, the genetic differentiation was very weak (mean FST 0.37%). Despite even allele frequency distribution in the vast majority of SNPs among all populations, a few rare alleles appeared at very high or at fixation in marginal populations restricted to northwestern Fennoscandia. Genotype–environment associations showed that climate variables explained 2.9% of the genetic differentiation, while genotype–phenotype associations revealed a high marker-estimated heritability of frost hardiness of 0.56, but identified no major loci. Very extensive gene flow, strong local adaptation, and signals of complex demographic history across markers are interesting topics of forthcoming studies on this species to better clarify signatures of selection and demography. Article in Journal/Newspaper Fennoscandia Directory of Open Access Journals: DOAJ Articles Plant Communications 2 1 100139 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
clinal variation cold hardiness genetic diversity population structure Pinus sylvestris Botany QK1-989 |
spellingShingle |
clinal variation cold hardiness genetic diversity population structure Pinus sylvestris Botany QK1-989 David Hall Jenny Olsson Wei Zhao Johan Kroon Ulfstand Wennström Xiao-Ru Wang Divergent patterns between phenotypic and genetic variation in Scots pine |
topic_facet |
clinal variation cold hardiness genetic diversity population structure Pinus sylvestris Botany QK1-989 |
description |
In boreal forests, autumn frost tolerance in seedlings is a critical fitness component because it determines survival rates during regeneration. To understand the forces that drive local adaptation in this trait, we conducted freezing tests in a common garden setting for 54 Pinus sylvestris (Scots pine) populations (>5000 seedlings) collected across Scandinavia into western Russia, and genotyped 24 of these populations (>900 seedlings) at >10 000 SNPs. Variation in cold hardiness among populations, as measured by QST, was above 80% and followed a distinct cline along latitude and longitude, demonstrating significant adaptation to climate at origin. In contrast, the genetic differentiation was very weak (mean FST 0.37%). Despite even allele frequency distribution in the vast majority of SNPs among all populations, a few rare alleles appeared at very high or at fixation in marginal populations restricted to northwestern Fennoscandia. Genotype–environment associations showed that climate variables explained 2.9% of the genetic differentiation, while genotype–phenotype associations revealed a high marker-estimated heritability of frost hardiness of 0.56, but identified no major loci. Very extensive gene flow, strong local adaptation, and signals of complex demographic history across markers are interesting topics of forthcoming studies on this species to better clarify signatures of selection and demography. |
format |
Article in Journal/Newspaper |
author |
David Hall Jenny Olsson Wei Zhao Johan Kroon Ulfstand Wennström Xiao-Ru Wang |
author_facet |
David Hall Jenny Olsson Wei Zhao Johan Kroon Ulfstand Wennström Xiao-Ru Wang |
author_sort |
David Hall |
title |
Divergent patterns between phenotypic and genetic variation in Scots pine |
title_short |
Divergent patterns between phenotypic and genetic variation in Scots pine |
title_full |
Divergent patterns between phenotypic and genetic variation in Scots pine |
title_fullStr |
Divergent patterns between phenotypic and genetic variation in Scots pine |
title_full_unstemmed |
Divergent patterns between phenotypic and genetic variation in Scots pine |
title_sort |
divergent patterns between phenotypic and genetic variation in scots pine |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.xplc.2020.100139 https://doaj.org/article/890ef2b2717a45c489b5d6cd38b88eff |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
Plant Communications, Vol 2, Iss 1, Pp 100139- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2590346220301826 https://doaj.org/toc/2590-3462 2590-3462 doi:10.1016/j.xplc.2020.100139 https://doaj.org/article/890ef2b2717a45c489b5d6cd38b88eff |
op_doi |
https://doi.org/10.1016/j.xplc.2020.100139 |
container_title |
Plant Communications |
container_volume |
2 |
container_issue |
1 |
container_start_page |
100139 |
_version_ |
1765997230418821120 |