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题名: Refugial isolation and range expansions drive the genetic structure of Oxyria sinensis (Polygonaceae) in the Himalaya-Hengduan Mountains
作者: Meng, Lihua1; Chen, Gang2; Li, Zhonghu3; Yang Yongping(杨永平)4; Wang, Zhengkun1; Wang, Liuyang5
刊名: SCIENTIFIC REPORTS
出版日期: 2015-05-27
卷号: 5, 页码:10396
学科分类: Multidisciplinary Sciences
DOI: 10.1038/srep10396
通讯作者: Meng,LH (reprint author),Yunnan Normal Univ,Sch Life Sci,Engn Res Ctr Sustainable Dev & Utilizat Biomass E,Minist Educ,Kunming 650092,Yunnan,Peoples R China. ; menglihua@mails.gucas.ac.cn ; lw157@duke.edu
文章类型: Article
英文摘要: The formation of the Mekong-Salween Divide and climatic oscillations in Pleistocene were the main drivers for the contemporary diversity and genetic structure of plants in the Himalaya-Hengduan Mountains (HHM). To identify the relative roles of the two historical events in shaping population history of plants in HHM, we investigated the phylogeographic pattern of Oxyria sinensis, a perennial plant endemic to the HHM. Sixteen chloroplast haplotypes were identified and were clustered into three phylogenetic clades. The age of the major clades was estimated to be in the Pleistocene, falling into several Pleistocene glacial stages and postdating the formation of the Mekong-Salween Divide. Range expansions occurred at least twice in the early and middle Pleistocene, but the spatial genetic distribution rarely changed since the Last Glacial Maximum. Our results suggest that temporary mountain glaciers may act as barriers in promoting the lineage divergence in Oxyria sinensis and that subsequential range expansions and secondary contacts might reshape the genetic distribution in geography and blur the boundary of population differentiation created in the earlier glacial stages. This study demonstrates that Pleistocene climatic change and mountain glaciers, rather than the Mekong-Salween Divide, play the primary role in shaping the spatial genetic structure of Oxyria sinensis.
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: QINGHAI-TIBETAN PLATEAU ; TERMINALIA-FRANCHETII COMBRETACEAE ; TANAKA-KAIYONG LINE ; POPULATION-GROWTH ; CHLOROPLAST PHYLOGEOGRAPHY ; NUCLEOTIDE SUBSTITUTION ; QUATERNARY GLACIATION ; EVOLUTIONARY HISTORY ; SEQUENCE VARIATION ; TEMPERATE PLANTS
收录类别: SCI
项目资助者: Natural Science Foundation of China [31160084, 41101058] ; Ph.D. Programs Foundation of Ministry of Education of China [20115303120001]
语种: 英语
WOS记录号: WOS:000355535000001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/21314
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Yunnan Normal Univ, Sch Life Sci, Engn Res Ctr Sustainable Dev & Utilizat Biomass E, Minist Educ, Kunming 650092, Yunnan, Peoples R China
2.Univ Rhode Isl, Grad Sch Oceanog, Kingston, RI 02881 USA
3.NW Univ Xian, Coll Life Sci, Key Lab Resource Biol & Biotechnol Western China, Minist Educ, Xian 710069, Shanxi, Peoples R China
4.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
5.Duke Univ, Dept Biol, Durham, NC 27708 USA
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