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Genetic diversity and population structure of Swertia tetraptera (Gentianaceae), an endemic species of Qinghai-Tibetan Plateau
Yang, Lucun1,2; Zhou, Guoying1; Chen, Guichen1
2011-08-01
发表期刊BIOCHEMICAL SYSTEMATICS AND ECOLOGY
ISSN0305-1978
卷号39期号:4-6页码:302-308
文章类型Article
摘要Swertia tetraptera Maxim is an annual alpine herb endemic to the Qinghai-Tibetan Plateau (QTP). Its populations are locally scattered as isolated patches throughout this region. Genetic variation within and among thirty-four populations of this species was assessed using ISSR fingerprinting with 10 primers. High levels of genetic diversity exist within species (P ? 98.9%, I ? 0.3475; He ? 0.2227), while the within-population diversity is low (P ? 32.7%, I ? 0.177; He ? 0.12). High levels of genetic differentiation were detectedamong populations based on various statistics, including Nei’s genetic diversity analysis (GST ? 0.4608), Bayesian analysis (qB ? 0.476) and AMOVA (FST ? 0.57). That is, populations shared low levels of genetic identity (I ? 0.2622–0.0966). This genetic structure was probably due to severe genetic drift, breeding system and limited gene flow. The observed genetic structure of the populations implies that different populations across the distribution range of the species should be sampled to maintain high genetic diversity when a conservation strategy is implemented.; Swertia tetraptera Maxim is an annual alpine herb endemic to the Qinghai-Tibetan Plateau (QTP). Its populations are locally scattered as isolated patches throughout this region. Genetic variation within and among thirty-four populations of this species was assessed using ISSR fingerprinting with 10 primers. High levels of genetic diversity exist within species (P = 98.9%, I = 0.3475; He = 0.2227), while the within-population diversity is low (P = 32.7%, I = 0.177; He = 0.12). High levels of genetic differentiation were detected among populations based on various statistics, including Nei's genetic diversity analysis (G(ST) = 0.4608), Bayesian analysis (theta(B) = 0.476) and AMOVA (F(ST) = 0.57). That is, populations shared low levels of genetic identity (I = 0.2622-0.0966). This genetic structure was probably due to severe genetic drift, breeding system and limited gene flow. The observed genetic structure of the populations implies that different populations across the distribution range of the species should be sampled to maintain high genetic diversity when a conservation strategy is implemented. (C) 2011 Elsevier Ltd. All rights reserved.
关键词Swertia Tetraptera Genetic Structure Genetic Diversity Issr
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]SIMPLE SEQUENCE REPEATS ; MEGACODON-STYLOPHORUS ; MARKERS ; DIFFERENTIATION ; PHYLOGEOGRAPHY ; EMBRYOLOGY ; DISTANCE ; CHINA ; ISSR ; FLOW
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:000297601400009
引用统计
被引频次:6[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/363003/2060
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810008, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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GB/T 7714
Yang, Lucun,Zhou, Guoying,Chen, Guichen. Genetic diversity and population structure of Swertia tetraptera (Gentianaceae), an endemic species of Qinghai-Tibetan Plateau[J]. BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2011,39(4-6):302-308.
APA Yang, Lucun,Zhou, Guoying,&Chen, Guichen.(2011).Genetic diversity and population structure of Swertia tetraptera (Gentianaceae), an endemic species of Qinghai-Tibetan Plateau.BIOCHEMICAL SYSTEMATICS AND ECOLOGY,39(4-6),302-308.
MLA Yang, Lucun,et al."Genetic diversity and population structure of Swertia tetraptera (Gentianaceae), an endemic species of Qinghai-Tibetan Plateau".BIOCHEMICAL SYSTEMATICS AND ECOLOGY 39.4-6(2011):302-308.
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