Molecular phylogeography of alpine plant Metagentiana striata (Gentianaceae)

	Molecular phylogeography of alpine plant Metagentiana striata (Gentianaceae)
	Chen, Sheng-Yun 1,3; Wu, Gui-Li 2; Zhang, De-Jun 1,3; Gao, Qing-Bo 1,3; Duan, Yi-Zhong 1,3; Zhang, Fa-Qi 1,3; Chen, Shi-Long 1
刊名	journal of systematics and evolution
	2008-07-01
卷号	46 期号:4 页码:573-585
关键词	alpine plant cpDNA Hengduan Mountains Metagentiana striata molecular phylogeography refugium trnH (GUG)-psbA
英文摘要	herbaceous plants have a short life cycle and are sensitive to environmental changes. thus, they may serve as good models to elucidate historical processes of plant populations since quaternary glaciations. molecular phylogeographic analysis is a powerful tool to reveal the population history of plants and animals. to understand the geographic history of alpine plants in the qinghai-tibet plateau, which is still poorly known, we surveyed sequence variation of the chloroplast dna (cpdna) noncoding fragment trnh (gug)-psba intergenic spacer throughout the range of metagentiana striata (maxim.) t. n. ho, s. w. liu & s. l. chen, an annual and herbaceous alpine plant in the qinghai-tibet plateau and adjacent areas. seven haplotypes were detected by analyzing 155 individuals from 13 populations of this species. one haplotype (a) was common and widespread, and three haplotypes (e, f and g) were unique in their populations. the center of haplotype diversity is located in the hengduan mountains of southeastern qinghai-tibet plateau, with 2-3 haplotypes present in each of four populations. in populations from the northeastern and eastern qinghai-tibet plateau as well as from adjacent regions, however, only a single haplotype was found in each population, with different populations having different haplotypes. an analysis of molecular variance (amova) for populations of m striata showed that the genetic variation mainly resided among populations (73.05%), and the estimates of interpopulation differentiation were very high (g(st)=0.805, f(st)=0.731, n(st)=0.859). further, a significant phylogeographic structure was present (n(st) > g(st), p<0.05) whereas the value of average gene flow was low (n(m)=0.184) in the entire geographical range. along with the nested clade analysis (nca), our results suggested that the hengduan mountains of southeastern qinghai-tibet plateau served as a possible refugium during the quaternary glaciations, and the interglacial or post-glacial range expansion by plants from the refugium followed by allopatric and past fragmentation shaped the present distribution patterns of haplotypes and populations.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	plant sciences
研究领域[WOS]	plant sciences
关键词[WOS]	qinghai-tibetan plateau ; chloroplast dna ; ice ages ; population-structure ; glacial refugia ; postglacial recolonization ; phenotypic associations ; genetic consequences ; sequence variation ; cladistic-analysis
收录类别	SCI
语种	英语
WOS记录号	WOS:000257723400014
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/6874]
专题	西北高原生物研究所_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, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China 2.Lanzhou Univ, Key Lab Arid & Grassland Ecol, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Sheng-Yun,Wu, Gui-Li,Zhang, De-Jun,et al. Molecular phylogeography of alpine plant Metagentiana striata (Gentianaceae)[J]. journal of systematics and evolution,2008,46(4):573-585.
APA	Chen, Sheng-Yun.,Wu, Gui-Li.,Zhang, De-Jun.,Gao, Qing-Bo.,Duan, Yi-Zhong.,...&Chen, Shi-Long.(2008).Molecular phylogeography of alpine plant Metagentiana striata (Gentianaceae).journal of systematics and evolution,46(4),573-585.
MLA	Chen, Sheng-Yun,et al."Molecular phylogeography of alpine plant Metagentiana striata (Gentianaceae)".journal of systematics and evolution 46.4(2008):573-585.