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Hybridization and introgression in sympatric and allopatric populations of four oak species Li, Xuan; Wei, Gaoming; El-Kassaby, Yousry A.; Fang, Yanming

Abstract

Background Hybridization and introgression are vital sources of novel genetic variation driving diversification during reticulated evolution. Quercus is an important model clade, having extraordinary diverse and abundant members in the Northern hemisphere, that are used to studying the introgression of species boundaries and adaptive processes. China is the second-largest distribution center of Quercus, but there are limited studies on introgressive hybridization. Results Here, we screened 17 co-dominant nuclear microsatellite markers to investigate the hybridization and introgression of four oaks (Quercus acutissima, Quercus variabilis, Quercus fabri, and Quercus serrata) in 10 populations. We identified 361 alleles in the four-oak species across 17 loci, and all loci were characterized by high genetic variability (HE = 0.844–0.944) and moderate differentiation (FST = 0.037–0.156) levels. A population differentiation analysis revealed the following: allopatric homologous (FST = 0.064) 

Item Metadata

Title
Hybridization and introgression in sympatric and allopatric populations of four oak species
Creator
Li, Xuan; Wei, Gaoming; El-Kassaby, Yousry A.; Fang, Yanming
Publisher
BioMed Central
Date Issued
2021-06-09
Description
Background Hybridization and introgression are vital sources of novel genetic variation driving diversification during reticulated evolution. Quercus is an important model clade, having extraordinary diverse and abundant members in the Northern hemisphere, that are used to studying the introgression of species boundaries and adaptive processes. China is the second-largest distribution center of Quercus, but there are limited studies on introgressive hybridization. Results Here, we screened 17 co-dominant nuclear microsatellite markers to investigate the hybridization and introgression of four oaks (Quercus acutissima, Quercus variabilis, Quercus fabri, and Quercus serrata) in 10 populations. We identified 361 alleles in the four-oak species across 17 loci, and all loci were characterized by high genetic variability (HE = 0.844–0.944) and moderate differentiation (FST = 0.037–0.156) levels. A population differentiation analysis revealed the following: allopatric homologous (FST = 0.064) 
Subject
NSSR; Section Quercus; Section Cerris; Hybridization; Introgression
Genre
Article
Type
Text
Language
eng
Date Available
2021-06-23
Provider
Vancouver : University of British Columbia Library
Rights
Attribution 4.0 International (CC BY 4.0)
DOI
10.14288/1.0398497
URI
http://hdl.handle.net/2429/78760
Affiliation
Forestry, Faculty of; Non UBC; Forest and Conservation Sciences, Department of
Citation
BMC Plant Biology. 2021 Jun 09;21(1):266
Publisher DOI
10.1186/s12870-021-03007-4
Peer Review Status
Reviewed
Scholarly Level
Faculty
Copyright Holder
The Author(s)
Rights URI
http://creativecommons.org/licenses/by/4.0/
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Attribution 4.0 International (CC BY 4.0)