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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
Source PublicationBIOCHEMICAL SYSTEMATICS AND ECOLOGY
ISSN0305-1978
Volume39Issue:4-6Pages:302-308
SubtypeArticle
AbstractSwertia 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.
KeywordSwertia Tetraptera Genetic Structure Genetic Diversity Issr
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordSIMPLE SEQUENCE REPEATS ; MEGACODON-STYLOPHORUS ; MARKERS ; DIFFERENTIATION ; PHYLOGEOGRAPHY ; EMBRYOLOGY ; DISTANCE ; CHINA ; ISSR ; FLOW
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS SubjectBiochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
WOS IDWOS:000297601400009
Citation statistics
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/2060
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810008, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
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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