Out of Refugia: Population Genetic Structure and Evolutionary History of the Alpine Medicinal Plant Gentiana lawrencei var. farreri (Gentianaceae)

NWIPB OpenIR

	Out of Refugia: Population Genetic Structure and Evolutionary History of the Alpine Medicinal Plant Gentiana lawrencei var. farreri (Gentianaceae)
	Fu, Peng-Cheng; Ya, Hui-Yuan; Liu, Qi-Wei; Cai, Hui-Min; Chen, Shi-Long
	2018
发表期刊	FRONTIERS IN GENETICS
卷号	9
摘要	Understanding the genetic structure and evolutionary history of plants contributes to their conservation and utilization and helps to predict their response to environmental changes. The wildflower and traditional Chinese and Tibetan medicinal plant Gentiana lawrencei var. farreri is endemic to the Qinghai-Tibetan Plateau (QTP). To explore its genetic structure and evolutionary history, the genetic diversity, divergence, and demographics were analyzed in individuals from 31 locations across the QTP using 1 chloroplast marker and 10 nuclear microsatellite loci. High genetic diversity was detected in G. lawrencei var. farreri, and most of the genetic variance was found within populations. Values of F-ST in G. lawrencei var. farreri from nuclear microsatellite and chloroplast data were 0.1757 and 0.739, respectively. The data indicated the presence of isolation by distance. The southeast edge of the QTP was the main refugium for G. lawrencei var. farreri, and one microrefugium was also detected in the plateau platform of the QTP. Both nuclear microsatellite and chloroplast data indicated that the populations were divided into two geographically structured groups, a southeast group and a northwest group. The current genetic pattern was mainly formed through recolonization from the two independent refugia. Significant melt was detected at the adjacent area of the two geographically structured groups. Approximate Bayesian computation showed that the northwest group had diverged from the southeast group, which then underwent population expansion. Our results suggest that the two-refugia pattern had a significant impact on the genetic structure and evolutionary history of G. lawrencei var. farreri.
关键词	genetic structure evolutionary history refugia Gentiana lawrencei var. farreri Qinghai-Tibetan Plateau microsatellites chloroplast DNA
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/59936
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Fu, Peng-Cheng,Ya, Hui-Yuan,Liu, Qi-Wei,et al. Out of Refugia: Population Genetic Structure and Evolutionary History of the Alpine Medicinal Plant Gentiana lawrencei var. farreri (Gentianaceae)[J]. FRONTIERS IN GENETICS,2018,9.
APA	Fu, Peng-Cheng,Ya, Hui-Yuan,Liu, Qi-Wei,Cai, Hui-Min,&Chen, Shi-Long.(2018).Out of Refugia: Population Genetic Structure and Evolutionary History of the Alpine Medicinal Plant Gentiana lawrencei var. farreri (Gentianaceae).FRONTIERS IN GENETICS,9.
MLA	Fu, Peng-Cheng,et al."Out of Refugia: Population Genetic Structure and Evolutionary History of the Alpine Medicinal Plant Gentiana lawrencei var. farreri (Gentianaceae)".FRONTIERS IN GENETICS 9(2018).