Phylogeography of Cyananthus delavayi (Campanulaceae) in Hengduan Mountains inferred from variation in nuclear and chloroplast DNA sequences

doi:10.1111/j.1759-6831.2012.00200.x

	Phylogeography of Cyananthus delavayi (Campanulaceae) in Hengduan Mountains inferred from variation in nuclear and chloroplast DNA sequences
	Li, Guo-Dong1,2 ; Yue, Liang-Liang 1,2; Sun, Hang1 ; Qian, Zi-Gang 3
通讯作者	Sun, H (reprint author), Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650200, Peoples R China. ; hsun@mail.kib.ac.cn ; qianzig@yahoo.com.cn
	2012-07-01
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
卷号	50 期号:4 页码:305-315
摘要	Phylogeographic studies on alpine plants endemic to the Hengduan Mountains of the southeastern QinghaiTibet Plateau are still limited in number. In this study, we used sequence variation of one nuclear gene (ncpGS, which encodes the chloroplastic glutamine synthetase) and in two chloroplast DNA segments to investigate the phylogeographic structure and population demographic history of Cyananthus delavayi, a narrow-range species endemic to this region. We identified eight chlorotypes and 16 nuclear genotypes in a survey of 10 populations sampled throughout the range of the species. The results of both phylogenetic and network analyses suggested that the genealogical relationships of both chlorotypes and nuclear genotypes showed a clear geographical correlation. High total genetic diversity, low levels of within-population diversity, and strong population differentiation (chloroplast DNA: hT= 0.827, hS= 0.087, NST= 0.899, GST= 0.895; nuclear DNA: hT= 0.910, hS= 0.348, NST= 0719, GST= 0.618) were identified. Based on the mismatch distribution analyses, no evidence of recent demographic population expansion was found for this species. Nested clade analyses of both chlorotypes and nuclear genotypes indicated that restricted gene flow resulting from isolation by distance and allopatric fragmentation were likely to have been the major processes that shaped their present-day spatial distribution. Our dating of the genetic divergences between three major geographic lineages suggested that the largest glaciation of the early Quaternary developed in the QinghaiTibet Plateau and mountainous isolation may have together led to deep intraspecific vicariance within this species.
关键词	Chloroplast Dna Cyananthus Delavayi Hengduan Mountains Ncpgs Phylogeography Vicariance
学科领域	Plant Sciences
DOI	10.1111/j.1759-6831.2012.00200.x
收录类别	SCI
语种	英语
WOS记录号	WOS:000306406300005
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/15107
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650200, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Yunnan Univ Tradit Chinese Med, Kunming 650500, Peoples R China
推荐引用方式 GB/T 7714	Li, Guo-Dong,Yue, Liang-Liang,Sun, Hang,et al. Phylogeography of Cyananthus delavayi (Campanulaceae) in Hengduan Mountains inferred from variation in nuclear and chloroplast DNA sequences[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2012,50(4):305-315.
APA	Li, Guo-Dong,Yue, Liang-Liang,Sun, Hang,&Qian, Zi-Gang.(2012).Phylogeography of Cyananthus delavayi (Campanulaceae) in Hengduan Mountains inferred from variation in nuclear and chloroplast DNA sequences.JOURNAL OF SYSTEMATICS AND EVOLUTION,50(4),305-315.
MLA	Li, Guo-Dong,et al."Phylogeography of Cyananthus delavayi (Campanulaceae) in Hengduan Mountains inferred from variation in nuclear and chloroplast DNA sequences".JOURNAL OF SYSTEMATICS AND EVOLUTION 50.4(2012):305-315.

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