Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere
Abstract Aim We identified and evaluated general latitudinal trends in genetic diversity within populations of a widespread arctic–alpine plant, Dryas octopetala , to examine the applicability to this species of the dominant hypothesis that intraspecific genetic diversity is highest in the tropics a...
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crwiley:10.1111/jbi.13085 2024-09-15T18:04:04+00:00 Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere Hirao, Akira S. Watanabe, Mikio Tsuyuzaki, Shiro Shimono, Ayako Li, Xuefeng Masuzawa, Takehiro Wada, Naoya Global Environment Research Fund (F-092) of the Ministry of the Environment, Japan Research Education Funding for Japanese Alps Inter-Universities Cooperative Project 2017 http://dx.doi.org/10.1111/jbi.13085 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjbi.13085 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jbi.13085 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Biogeography volume 44, issue 12, page 2740-2751 ISSN 0305-0270 1365-2699 journal-article 2017 crwiley https://doi.org/10.1111/jbi.13085 2024-08-06T04:16:54Z Abstract Aim We identified and evaluated general latitudinal trends in genetic diversity within populations of a widespread arctic–alpine plant, Dryas octopetala , to examine the applicability to this species of the dominant hypothesis that intraspecific genetic diversity is highest in the tropics and declines towards the poles. Location The circumpolar Arctic and northern temperate alpine ranges, with a focus on high altitude mountains at the species lowest latitudinal margin in the Japanese archipelago. Methods Within‐population genetic diversity was assessed using genotypes determined at nine microsatellite loci ( n = 489), chloroplast DNA sequences ( atp B‐ rbc L and trn V‐ ndh C spacers, n = 181) and a nuclear gene sequence ( LEAFY , n = 173) of 18 populations, as well as a previously published amplified fragment length polymorphism dataset for 26 populations, across the distributional range of the species. The latitudinal pattern of intra‐population genetic diversity was modelled at hemispheric scale to discriminate linear latitudinal and quadratic central–marginal trends in genetic diversity. Population genetic structure was assessed by Bayesian clustering analyses. Results At hemispheric scale, we identified two interacting effects: a general latitudinal decline in genetic diversity towards the equator and a central–marginal effect, whereby genetic diversity decreases towards the margins of a species’ range. This decrease was more marked in low‐latitude marginal populations than in high‐latitude marginal populations. Populations at the lowest latitudes in the Japanese archipelago showed the lowest level of genetic diversity but exhibited distinctive genetic variation. Main conclusion The latitudinal decline in genetic diversity within populations of this arctic–alpine plant across its range was opposite to the commonly observed trend. A significant part of the equator‐ward latitudinal decline in genetic diversity in this arctic–alpine species may be attributable to a “sky island” effect, which played a ... Article in Journal/Newspaper Dryas octopetala Wiley Online Library Journal of Biogeography 44 12 2740 2751 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Aim We identified and evaluated general latitudinal trends in genetic diversity within populations of a widespread arctic–alpine plant, Dryas octopetala , to examine the applicability to this species of the dominant hypothesis that intraspecific genetic diversity is highest in the tropics and declines towards the poles. Location The circumpolar Arctic and northern temperate alpine ranges, with a focus on high altitude mountains at the species lowest latitudinal margin in the Japanese archipelago. Methods Within‐population genetic diversity was assessed using genotypes determined at nine microsatellite loci ( n = 489), chloroplast DNA sequences ( atp B‐ rbc L and trn V‐ ndh C spacers, n = 181) and a nuclear gene sequence ( LEAFY , n = 173) of 18 populations, as well as a previously published amplified fragment length polymorphism dataset for 26 populations, across the distributional range of the species. The latitudinal pattern of intra‐population genetic diversity was modelled at hemispheric scale to discriminate linear latitudinal and quadratic central–marginal trends in genetic diversity. Population genetic structure was assessed by Bayesian clustering analyses. Results At hemispheric scale, we identified two interacting effects: a general latitudinal decline in genetic diversity towards the equator and a central–marginal effect, whereby genetic diversity decreases towards the margins of a species’ range. This decrease was more marked in low‐latitude marginal populations than in high‐latitude marginal populations. Populations at the lowest latitudes in the Japanese archipelago showed the lowest level of genetic diversity but exhibited distinctive genetic variation. Main conclusion The latitudinal decline in genetic diversity within populations of this arctic–alpine plant across its range was opposite to the commonly observed trend. A significant part of the equator‐ward latitudinal decline in genetic diversity in this arctic–alpine species may be attributable to a “sky island” effect, which played a ... |
author2 |
Global Environment Research Fund (F-092) of the Ministry of the Environment, Japan Research Education Funding for Japanese Alps Inter-Universities Cooperative Project |
format |
Article in Journal/Newspaper |
author |
Hirao, Akira S. Watanabe, Mikio Tsuyuzaki, Shiro Shimono, Ayako Li, Xuefeng Masuzawa, Takehiro Wada, Naoya |
spellingShingle |
Hirao, Akira S. Watanabe, Mikio Tsuyuzaki, Shiro Shimono, Ayako Li, Xuefeng Masuzawa, Takehiro Wada, Naoya Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere |
author_facet |
Hirao, Akira S. Watanabe, Mikio Tsuyuzaki, Shiro Shimono, Ayako Li, Xuefeng Masuzawa, Takehiro Wada, Naoya |
author_sort |
Hirao, Akira S. |
title |
Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere |
title_short |
Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere |
title_full |
Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere |
title_fullStr |
Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere |
title_full_unstemmed |
Genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the Northern Hemisphere |
title_sort |
genetic diversity within populations of an arctic–alpine species declines with decreasing latitude across the northern hemisphere |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/jbi.13085 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjbi.13085 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jbi.13085 |
genre |
Dryas octopetala |
genre_facet |
Dryas octopetala |
op_source |
Journal of Biogeography volume 44, issue 12, page 2740-2751 ISSN 0305-0270 1365-2699 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jbi.13085 |
container_title |
Journal of Biogeography |
container_volume |
44 |
container_issue |
12 |
container_start_page |
2740 |
op_container_end_page |
2751 |
_version_ |
1810441565258121216 |