Cargando…
Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes
Hybridization frequently occurs in plant species. With repeated backcross, the introgression may influence evolutionary trajectories through the entry of foreign genes. However, the genetic admixture via hybridization events is often confused with the ancestral polymorphism, especially in closely re...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912722/ https://www.ncbi.nlm.nih.gov/pubmed/35270114 http://dx.doi.org/10.3390/plants11050644 |
_version_ | 1784667220782088192 |
---|---|
author | Luo, Min-Xin Tseng, Yi-Ting Chang, Jui-Tse Chao, Chien-Ti Liao, Pei-Chun |
author_facet | Luo, Min-Xin Tseng, Yi-Ting Chang, Jui-Tse Chao, Chien-Ti Liao, Pei-Chun |
author_sort | Luo, Min-Xin |
collection | PubMed |
description | Hybridization frequently occurs in plant species. With repeated backcross, the introgression may influence evolutionary trajectories through the entry of foreign genes. However, the genetic admixture via hybridization events is often confused with the ancestral polymorphism, especially in closely related species that have experienced similar evolutionary events. In Taiwan, two independent-originated endemic snakebark maples have contrasted postglacial range expansion routes: northward and upward expansion in Acer caudatifolium and downward expansion in A. morrisonense. The range expansion causes the current parapatric distribution, increasing the possibility of introgression. This study elucidates how their genetic variation reflects introgression and historical demography. With 17 EST-SSR markers among the intensely sampled 657 individuals, we confirmed that the genetic admixture between species mainly was attributed to recent introgression instead of common ancestral polymorphism. The secondary contact scenario inferred by approximate Bayesian computation suggested that A. morrisonense received more genetic variations from A. caudatifolium. Introgression occurred in colonized Taiwan around the early Last Glacial Period. Furthermore, the demography of A. caudatifolium was more severely affected by introgression than A. morrisonense, especially in the wavefront populations with high altitude range expansion, implying an altitude-related adaptive introgression. In contrast, A. morrisonense exhibited ubiquitous introgression independent of postglacial expansion, suggesting that introgression in A. morrisonense was neutral. In terms of different genetic consequences, introgression had different demographic impacts on species with different altitude expansion directions even under the same climate-change conditions within an island. |
format | Online Article Text |
id | pubmed-8912722 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-89127222022-03-11 Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes Luo, Min-Xin Tseng, Yi-Ting Chang, Jui-Tse Chao, Chien-Ti Liao, Pei-Chun Plants (Basel) Article Hybridization frequently occurs in plant species. With repeated backcross, the introgression may influence evolutionary trajectories through the entry of foreign genes. However, the genetic admixture via hybridization events is often confused with the ancestral polymorphism, especially in closely related species that have experienced similar evolutionary events. In Taiwan, two independent-originated endemic snakebark maples have contrasted postglacial range expansion routes: northward and upward expansion in Acer caudatifolium and downward expansion in A. morrisonense. The range expansion causes the current parapatric distribution, increasing the possibility of introgression. This study elucidates how their genetic variation reflects introgression and historical demography. With 17 EST-SSR markers among the intensely sampled 657 individuals, we confirmed that the genetic admixture between species mainly was attributed to recent introgression instead of common ancestral polymorphism. The secondary contact scenario inferred by approximate Bayesian computation suggested that A. morrisonense received more genetic variations from A. caudatifolium. Introgression occurred in colonized Taiwan around the early Last Glacial Period. Furthermore, the demography of A. caudatifolium was more severely affected by introgression than A. morrisonense, especially in the wavefront populations with high altitude range expansion, implying an altitude-related adaptive introgression. In contrast, A. morrisonense exhibited ubiquitous introgression independent of postglacial expansion, suggesting that introgression in A. morrisonense was neutral. In terms of different genetic consequences, introgression had different demographic impacts on species with different altitude expansion directions even under the same climate-change conditions within an island. MDPI 2022-02-26 /pmc/articles/PMC8912722/ /pubmed/35270114 http://dx.doi.org/10.3390/plants11050644 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Luo, Min-Xin Tseng, Yi-Ting Chang, Jui-Tse Chao, Chien-Ti Liao, Pei-Chun Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes |
title | Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes |
title_full | Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes |
title_fullStr | Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes |
title_full_unstemmed | Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes |
title_short | Different Roles of Introgression on the Demographic Change in Two Snakebark Maples, Acer caudatifolium and A. morrisonense, with Contrasted Postglacial Expansion Routes |
title_sort | different roles of introgression on the demographic change in two snakebark maples, acer caudatifolium and a. morrisonense, with contrasted postglacial expansion routes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912722/ https://www.ncbi.nlm.nih.gov/pubmed/35270114 http://dx.doi.org/10.3390/plants11050644 |
work_keys_str_mv | AT luominxin differentrolesofintrogressiononthedemographicchangeintwosnakebarkmaplesacercaudatifoliumandamorrisonensewithcontrastedpostglacialexpansionroutes AT tsengyiting differentrolesofintrogressiononthedemographicchangeintwosnakebarkmaplesacercaudatifoliumandamorrisonensewithcontrastedpostglacialexpansionroutes AT changjuitse differentrolesofintrogressiononthedemographicchangeintwosnakebarkmaplesacercaudatifoliumandamorrisonensewithcontrastedpostglacialexpansionroutes AT chaochienti differentrolesofintrogressiononthedemographicchangeintwosnakebarkmaplesacercaudatifoliumandamorrisonensewithcontrastedpostglacialexpansionroutes AT liaopeichun differentrolesofintrogressiononthedemographicchangeintwosnakebarkmaplesacercaudatifoliumandamorrisonensewithcontrastedpostglacialexpansionroutes |