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Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges

The reduced growth performance of individuals from range edges is a common phenomenon in various taxa, and considered to be an evolutionary factor that limits the species’ range. However, most studies did not distinguish between two mechanisms that can lead to this reduction: genetic load and adapti...

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Autores principales: Aihara, Takaki, Araki, Kyoko, Onuma, Yunosuke, Cai, Yihan, Paing, Aye Myat Myat, Goto, Susumu, Hisamoto, Yoko, Tomaru, Nobuhiro, Homma, Kosuke, Takagi, Masahiro, Yoshida, Toshiya, Iio, Atsuhiro, Nagamatsu, Dai, Kobayashi, Hajime, Hirota, Mitsuru, Uchiyama, Kentaro, Tsumura, Yoshihiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10673911/
https://www.ncbi.nlm.nih.gov/pubmed/37940658
http://dx.doi.org/10.1038/s41437-023-00655-0
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author Aihara, Takaki
Araki, Kyoko
Onuma, Yunosuke
Cai, Yihan
Paing, Aye Myat Myat
Goto, Susumu
Hisamoto, Yoko
Tomaru, Nobuhiro
Homma, Kosuke
Takagi, Masahiro
Yoshida, Toshiya
Iio, Atsuhiro
Nagamatsu, Dai
Kobayashi, Hajime
Hirota, Mitsuru
Uchiyama, Kentaro
Tsumura, Yoshihiko
author_facet Aihara, Takaki
Araki, Kyoko
Onuma, Yunosuke
Cai, Yihan
Paing, Aye Myat Myat
Goto, Susumu
Hisamoto, Yoko
Tomaru, Nobuhiro
Homma, Kosuke
Takagi, Masahiro
Yoshida, Toshiya
Iio, Atsuhiro
Nagamatsu, Dai
Kobayashi, Hajime
Hirota, Mitsuru
Uchiyama, Kentaro
Tsumura, Yoshihiko
author_sort Aihara, Takaki
collection PubMed
description The reduced growth performance of individuals from range edges is a common phenomenon in various taxa, and considered to be an evolutionary factor that limits the species’ range. However, most studies did not distinguish between two mechanisms that can lead to this reduction: genetic load and adaptive selection to harsh conditions. To address this lack of understanding, we investigated the climatic and genetic factors underlying the growth performance of Betula ermanii saplings transplanted from 11 populations including high-altitude edge and low-latitude edge population. We estimated the climatic position of the populations within the overall B. ermanii’s distribution, and the genetic composition and diversity using restriction-site associated DNA sequencing, and measured survival, growth rates and individual size of the saplings. The high-altitude edge population (APW) was located below the 95% significance interval for the mean annual temperature range, but did not show any distinctive genetic characteristics. In contrast, the low-latitude edge population (SHK) exhibited a high level of linkage disequilibrium, low genetic diversity, a distinct genetic composition from the other populations, and a high relatedness coefficient. Both APW and SHK saplings displayed lower survival rates, heights and diameters, while SHK saplings also exhibited lower growth rates than the other populations’ saplings. The low heights and diameters of APW saplings was likely the result of adaptive selection to harsh conditions, while the low survival and growth rates of SHK saplings was likely the result of genetic load. Our findings shed light on the mechanisms underlying the reduced growth performance of range-edge populations.
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spelling pubmed-106739112023-11-09 Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges Aihara, Takaki Araki, Kyoko Onuma, Yunosuke Cai, Yihan Paing, Aye Myat Myat Goto, Susumu Hisamoto, Yoko Tomaru, Nobuhiro Homma, Kosuke Takagi, Masahiro Yoshida, Toshiya Iio, Atsuhiro Nagamatsu, Dai Kobayashi, Hajime Hirota, Mitsuru Uchiyama, Kentaro Tsumura, Yoshihiko Heredity (Edinb) Article The reduced growth performance of individuals from range edges is a common phenomenon in various taxa, and considered to be an evolutionary factor that limits the species’ range. However, most studies did not distinguish between two mechanisms that can lead to this reduction: genetic load and adaptive selection to harsh conditions. To address this lack of understanding, we investigated the climatic and genetic factors underlying the growth performance of Betula ermanii saplings transplanted from 11 populations including high-altitude edge and low-latitude edge population. We estimated the climatic position of the populations within the overall B. ermanii’s distribution, and the genetic composition and diversity using restriction-site associated DNA sequencing, and measured survival, growth rates and individual size of the saplings. The high-altitude edge population (APW) was located below the 95% significance interval for the mean annual temperature range, but did not show any distinctive genetic characteristics. In contrast, the low-latitude edge population (SHK) exhibited a high level of linkage disequilibrium, low genetic diversity, a distinct genetic composition from the other populations, and a high relatedness coefficient. Both APW and SHK saplings displayed lower survival rates, heights and diameters, while SHK saplings also exhibited lower growth rates than the other populations’ saplings. The low heights and diameters of APW saplings was likely the result of adaptive selection to harsh conditions, while the low survival and growth rates of SHK saplings was likely the result of genetic load. Our findings shed light on the mechanisms underlying the reduced growth performance of range-edge populations. Springer International Publishing 2023-11-09 2023-12 /pmc/articles/PMC10673911/ /pubmed/37940658 http://dx.doi.org/10.1038/s41437-023-00655-0 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Aihara, Takaki
Araki, Kyoko
Onuma, Yunosuke
Cai, Yihan
Paing, Aye Myat Myat
Goto, Susumu
Hisamoto, Yoko
Tomaru, Nobuhiro
Homma, Kosuke
Takagi, Masahiro
Yoshida, Toshiya
Iio, Atsuhiro
Nagamatsu, Dai
Kobayashi, Hajime
Hirota, Mitsuru
Uchiyama, Kentaro
Tsumura, Yoshihiko
Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges
title Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges
title_full Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges
title_fullStr Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges
title_full_unstemmed Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges
title_short Divergent mechanisms of reduced growth performance in Betula ermanii saplings from high-altitude and low-latitude range edges
title_sort divergent mechanisms of reduced growth performance in betula ermanii saplings from high-altitude and low-latitude range edges
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10673911/
https://www.ncbi.nlm.nih.gov/pubmed/37940658
http://dx.doi.org/10.1038/s41437-023-00655-0
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