Population Genetic Structure and Demographic History of Primula fasciculata in Southwest China

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Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_6FC985681735
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Population Genetic Structure and Demographic History of Primula fasciculata in Southwest China
Journal
Frontiers in Plant Science
Author(s)
Ren Guangpeng, Mateo Rubén G., Conti Elena, Salamin Nicolas
ISSN
1664-462X (Print)
ISSN-L
1664-462X
Publication state
Published
Issued date
02/07/2020
Peer-reviewed
Oui
Volume
11
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
Understanding the factors that drive the genetic structure of a species and its responses to past climatic changes is an important first step in modern population management. The response to the last glacial maximum (LGM) has been well studied, however, the effect of previous glaciation periods on plant demographic history is still not well studied. Here we investigated the population structure and demographic history of Primula fasciculata that widely occurs in the Hengduan Mountains and Qinghai-Tibetan Plateau. We obtained genomic data for 234 samples of the species using restriction site-associated DNA (RAD) sequencing and combined approximate Bayesian computation (ABC) and species distribution modeling (SDM) to evaluate the effects of multiple glaciation periods by testing several population divergence models and demographic scenarios. The analyses of population structure showed that P. fasciculata displays a striking population structure with six groups that could be identified genetically. Our ABC modeling suggested that the current groups diverged from ancestral populations located in the eastern Hengduan Mountains after the largest glaciation occurred in the region (~ 0.8-0.5 million years ago), which is consistent with the result of SDMs. Each current group has survived in different glacial refugia during the LGM and experienced expansions and/or bottlenecks since their divergence during or across the following Quaternary glacial cycles. Our study demonstrates the usefulness of population genomics for evaluating the effects of past climatic changes in alpine plant species with shallow population structure.
Keywords
Plant Science
Pubmed
Web of science
Open Access
Yes
Create date
07/07/2020 8:58
Last modification date
12/08/2020 5:22
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