Phylogeography of Cyananthus delavayi (Campanulaceae) in Hengduan Mountains inferred from variation in nuclear and chloroplast DNA sequences
Li, Guo-Dong1,2; Yue, Liang-Liang1,2; Sun, Hang1; Qian, Zi-Gang3
2012-07-01
发表期刊JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
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
资助信息National Natural Science Foundation of China[31061160184, 40930209, 30960501]; Yunnan Natural Science Foundation[U1136601]; Chinese Academy of Sciences[2011312D11022]
学科领域Plant Sciences
DOI10.1111/j.1759-6831.2012.00200.x
收录类别SCI
语种英语
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000306406300005
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
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
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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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