Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers

NWIPB OpenIR

	Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers
	Chen, Fangjian ; Wang, Ailan ; Chen, Kangming ; Wan, Dongshi ; Liu, Jianquan
	2009-11-01
发表期刊	BIOCHEMICAL SYSTEMATICS AND ECOLOGY ; Chen, FJ; Wang, AL; Chen, KM; Wan, DS; Liu, JQ.Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers,BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2009,37(5):613-621
摘要	Rheum tanguticum (Polygonaceae), an endangered plant, is endemic to the Qinghai-Tibetan Plateau. A total of 114 individual of R. tanguticum from 10 geographically separate populations were analyzed using seven pairs simple sequence repeats (SSR) markers. 102 alleles were recorded, with an average of 14.6 alleles per locus (ranging from 13 to 17) and the expected heterozygosity (H(e)) ranged from 0.384 to 0.515 (average 0.459). The genetic differentiation between populations was relatively high (F(St)=0.249): the gene flow (N(m)=0,754), however, was limited, which suggested that around 21.18% of the total genetic variations occurred between populations. Our results revealed high levels of genetic variations within and between populations. The endangered status of this species is probably due to harvesting of the wild populations, rather than a lack of the genetic diversity. Anthropologic effects as well as other factors may, together, have shaped the genetic structure of this species. (C) 2009 Elsevier Ltd. All rights reserved.; Rheum tanguticum (Polygonaceae), an endangered plant, is endemic to the Qinghai-Tibetan Plateau. A total of 114 individual of R. tanguticum from 10 geographically separate populations were analyzed using seven pairs simple sequence repeats (SSR) markers. 102 alleles were recorded, with an average of 14.6 alleles per locus (ranging from 13 to 17) and the expected heterozygosity (H-e) ranged from 0.384 to 0.515 (average 0.459). The genetic differentiation between populations was relatively high (F-St=0.249): the gene flow (N-m=0,754), however, was limited, which suggested that around 21.18% of the total genetic variations occurred between populations. Our results revealed high levels of genetic variations within and between populations. The endangered status of this species is probably due to harvesting of the wild populations, rather than a lack of the genetic diversity. Anthropologic effects as well as other factors may, together, have shaped the genetic structure of this species. (C) 2009 Elsevier Ltd. All rights reserved.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/40966
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	Chen, Fangjian,Wang, Ailan,Chen, Kangming,et al. Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers[J]. BIOCHEMICAL SYSTEMATICS AND ECOLOGY, Chen, FJ; Wang, AL; Chen, KM; Wan, DS; Liu, JQ.Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers,BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2009,37(5):613-621,2009.
APA	Chen, Fangjian,Wang, Ailan,Chen, Kangming,Wan, Dongshi,&Liu, Jianquan.(2009).Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers.BIOCHEMICAL SYSTEMATICS AND ECOLOGY.
MLA	Chen, Fangjian,et al."Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers".BIOCHEMICAL SYSTEMATICS AND ECOLOGY (2009).