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

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	Genetic diversity and population structure of the endangered and medically important Rheum tanguticum (Polygonaceae) revealed by SSR Markers
	Chen, Fangjian 1; Wang, Ailan 1; Chen, Kangming 1; Wan, Dongshi 1; Liu, Jianquan 1,2
	2009-11-01
发表期刊	BIOCHEMICAL SYSTEMATICS AND ECOLOGY
ISSN	0305-1978
卷号	37 期号:5 页码:613-621
文章类型	Article
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.
关键词	Rheum Tanguticum Simple Sequence Repeat (Ssr) Genetic Diversity Population Differentiation
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	MOLECULAR PHYLOGENY ; TIBETAN PLATEAU ; MICROSATELLITES ; CHINA ; DIFFERENTIATION ; CONSERVATION ; MORPHOLOGY ; SEQUENCES ; FOREST ; PLANTS
收录类别	SCI
语种	英语
WOS研究方向	Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
WOS记录号	WOS:000274609700010
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1812
专题	中国科学院西北高原生物研究所
作者单位	1.Lanzhou Univ, Sch Life Sci, MOE Key Lab Arid & Grassland Ecol, Inst Mol Ecol, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, NW Plateau Inst Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China
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,2009,37(5):613-621.
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,37(5),613-621.
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 37.5(2009):613-621.