globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0104773
论文题名:
Molecular Phylogeography and Population Genetic Structure of O. longilobus and O. taihangensis (Opisthopappus) on the Taihang Mountains
作者: Yiling Wang; Guiqin Yan
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2014
发表日期: 2014-8-22
卷: 9, 期:8
语种: 英语
英文关键词: Haplotypes ; Phylogeography ; Population genetics ; Paleogenetics ; Mountains ; Paleobotany ; Paleoclimatology ; Plants
英文摘要: Historic events such as the uplift of mountains and climatic oscillations in the Quaternary periods greatly affected the evolution and modern distribution of the flora. We sequenced the trnL–trnF, ndhJ-trnL and ITS from populations throughout the known distributions of O. longilobus and O. taihangensis to understand the evolutionary history and the divergence related to the past shifts of habitats in the Taihang Mountains regions. The results showed high genetic diversity and pronounced genetic differentiation among the populations of the two species with a significant phylogeographical pattern (NST>GST, P<0.05), which imply restricted gene flow among the populations and significant geographical or environmental isolation. Ten chloroplast DNA (cpDNA) and eighteen nucleus ribosome DNA (nrDNA) haplotypes were identified and clustered into two lineages. Two corresponding refuge areas were revealed across the entire distribution ranges of O. longilobus and at least three refuge areas for O. taihangensis. O. longilobus underwent an evolutionary historical process of long-distance dispersal and colonization, whereas O. taihangensis underwent a population expansion before the main uplift of Taihang Mountains. The differentiation time between O. longilobus and O. taihangensis is estimated to have occurred at the early Pleistocene. Physiographic complexity and paleovegetation transition of Taihang Mountains mainly shaped the specific formation and effected the present distribution of these two species. The results therefore support the inference that Quaternary refugial isolation promoted allopatric speciation in Taihang Mountains. This may help to explain the existence of high diversity and endemism of plant species in central/northern China.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0104773&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/17860
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: College of Life Sciences, Shanxi Normal University, Linfen, China;College of Life Sciences, Shanxi Normal University, Linfen, China

Recommended Citation:
Yiling Wang,Guiqin Yan. Molecular Phylogeography and Population Genetic Structure of O. longilobus and O. taihangensis (Opisthopappus) on the Taihang Mountains[J]. PLOS ONE,2014-01-01,9(8)
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