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Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus
Range expansion requires peripheral populations to shift adaptive optima to breach range boundaries. Opportunities for range expansion can be assessed by investigating the associations of core-periphery environmental and genetic differences. This study investigates differences in the core-periphery...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9449729/ https://www.ncbi.nlm.nih.gov/pubmed/36092420 http://dx.doi.org/10.3389/fpls.2022.956374 |
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author | Yang, Yong-Zhi Luo, Min-Xin Pang, Li-Dong Gao, Run-Hong Chang, Jui-Tse Liao, Pei-Chun |
author_facet | Yang, Yong-Zhi Luo, Min-Xin Pang, Li-Dong Gao, Run-Hong Chang, Jui-Tse Liao, Pei-Chun |
author_sort | Yang, Yong-Zhi |
collection | PubMed |
description | Range expansion requires peripheral populations to shift adaptive optima to breach range boundaries. Opportunities for range expansion can be assessed by investigating the associations of core-periphery environmental and genetic differences. This study investigates differences in the core-periphery adaptation of Ammopiptanthus mongolicus, a broad-leaved evergreen shrub species in a relatively homogeneous temperate Asian desert environment, to explore the environmental factors that limit the expansion of desert plants. Temperate deserts are characterized by severe drought, a large diurnal temperature range, and seasonality. Long-standing adaptation to the harsh desert environment may confine the genetic diversity of A. mongolicus, despite its distribution over a wide range of longitude, latitude, and altitude. Since range edges defined by climate niches may have different genetic responses to environmental extremes, we compared genome-wide polymorphisms between nine environmental core populations and ten fragmented peripheral populations to determine the “adaptive peripheral” populations. At least four adaptive peripheral populations had similar genetic-environmental association patterns. High elevations, summer drought, and winter cold were the three main determinants of converging these four adaptive peripheral populations. Elevation mainly caused similar local climates among different geographic regions. Altitudinal adaptation resulting from integrated environmental-genetic responses was a breakthrough in breaching niche boundaries. These peripheral populations are also located in relatively humid and warmer environments. Relaxation of the drought and cold constraints facilitated the genetic divergence of these peripheral populations from the core population’s adaptive legacy. We conclude that pleiotropic selection synchronized adaptative divergence to cold and drought vs. warm and humid environments between the core and peripheral populations. Such parallel adaptation of peripheral populations relies on selection under a background of abundant new variants derived from the core population’s standing genetic variation, i.e., integration of genetic surfing and local adaptation. |
format | Online Article Text |
id | pubmed-9449729 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-94497292022-09-08 Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus Yang, Yong-Zhi Luo, Min-Xin Pang, Li-Dong Gao, Run-Hong Chang, Jui-Tse Liao, Pei-Chun Front Plant Sci Plant Science Range expansion requires peripheral populations to shift adaptive optima to breach range boundaries. Opportunities for range expansion can be assessed by investigating the associations of core-periphery environmental and genetic differences. This study investigates differences in the core-periphery adaptation of Ammopiptanthus mongolicus, a broad-leaved evergreen shrub species in a relatively homogeneous temperate Asian desert environment, to explore the environmental factors that limit the expansion of desert plants. Temperate deserts are characterized by severe drought, a large diurnal temperature range, and seasonality. Long-standing adaptation to the harsh desert environment may confine the genetic diversity of A. mongolicus, despite its distribution over a wide range of longitude, latitude, and altitude. Since range edges defined by climate niches may have different genetic responses to environmental extremes, we compared genome-wide polymorphisms between nine environmental core populations and ten fragmented peripheral populations to determine the “adaptive peripheral” populations. At least four adaptive peripheral populations had similar genetic-environmental association patterns. High elevations, summer drought, and winter cold were the three main determinants of converging these four adaptive peripheral populations. Elevation mainly caused similar local climates among different geographic regions. Altitudinal adaptation resulting from integrated environmental-genetic responses was a breakthrough in breaching niche boundaries. These peripheral populations are also located in relatively humid and warmer environments. Relaxation of the drought and cold constraints facilitated the genetic divergence of these peripheral populations from the core population’s adaptive legacy. We conclude that pleiotropic selection synchronized adaptative divergence to cold and drought vs. warm and humid environments between the core and peripheral populations. Such parallel adaptation of peripheral populations relies on selection under a background of abundant new variants derived from the core population’s standing genetic variation, i.e., integration of genetic surfing and local adaptation. Frontiers Media S.A. 2022-08-24 /pmc/articles/PMC9449729/ /pubmed/36092420 http://dx.doi.org/10.3389/fpls.2022.956374 Text en Copyright © 2022 Yang, Luo, Pang, Gao, Chang and Liao. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Yang, Yong-Zhi Luo, Min-Xin Pang, Li-Dong Gao, Run-Hong Chang, Jui-Tse Liao, Pei-Chun Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus |
title | Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus |
title_full | Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus |
title_fullStr | Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus |
title_full_unstemmed | Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus |
title_short | Parallel adaptation prompted core-periphery divergence of Ammopiptanthus mongolicus |
title_sort | parallel adaptation prompted core-periphery divergence of ammopiptanthus mongolicus |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9449729/ https://www.ncbi.nlm.nih.gov/pubmed/36092420 http://dx.doi.org/10.3389/fpls.2022.956374 |
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