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题名: Distributional dynamics and interspecific gene flow in Picea likiangensis and P. wilsonii triggered by climate change on the Qinghai-Tibet Plateau
作者: Sun, YS; Li, LL; Li, L; Zou, JB; Liu, JQ(刘建全)
收录类别: SCIE
出版日期: 2015-03
刊名: JOURNAL OF BIOGEOGRAPHY
卷号: 42, 期号:3, 页码:475-484
出版者: WILEY
出版地: HOBOKEN
英文摘要: AimTo address whether climate changes have altered the distributional ranges of cold-preferring conifer species, and whether this has influenced interspecific divergence. LocationQinghai-Tibet Plateau (QTP), Asia. MethodsWe obtained DNA sequences at 13 nuclear loci in 229 individuals collected from 32 populations across the range of two cold-preferring alpine species, Picea likiangensis and Picea wilsonii. Bayesian skyline plots (BSPs) were used to examine historical changes in effective population sizes. Species distributions were reconstructed based on presence-only data at 134 locations and climate variables from the WorldClim database, and the reconstructed distributions were compared with projected palaeodistributions at the Last Glacial Maximum (LGM, about 20ka). Four models of interspecific gene flow during the Pleistocene and Holocene were compared using approximate Bayesian computation (ABC). ResultsThe effective population sizes of P.likiangensis and P.wilsonii increased continuously from 5 to 0.2 Ma, but decreased after 0.2Ma. The distributional ranges during the LGM were wider than at present, confirming the trend of a recent decrease. However, the overlapping area became greater due to their shifted distributions, and these shifts altered the major direction of continuing interspecific gene flow. Main conclusionsThe early increase in the distributions of these two species might have been triggered by enlargements of the available cold habitats brought about by QTP uplift and Pleistocene glaciations. However, the distributional ranges decreased in response to climatic warming since the end of the largest glaciation. These distributional changes further retarded the process of differentiation by altering the pattern of gene flow. Our results shed light on the evolutionary complexity of alpine species in response to climate changes in this climate-sensitive biodiversity hotspot.
关键词: Climate change ; distributional shift ; effective population size ; gene flow ; population genetic data ; Qinghai-Tibet Plateau
作者部门: [Sun, Yongshuai ; Liu, Jianquan] Sichuan Univ, Coll Life Sci, MOE Key Lab Bioresources & Ecoenvironm, Chengdu 610065, Peoples R China ; [Li, Lili ; Li, Long ; Zou, Jiabin ; Liu, Jianquan] Lanzhou Univ, Coll Life Sci, Lanzhou 730000, Peoples R China
通讯作者: Liu, JQ (reprint author), Sichuan Univ, Coll Life Sci, Chengdu 610065, Peoples R China.
学科分类: Environmental Sciences & Ecology; Physical Geography
文章类型: Article
所属项目编号: National Key Project for Basic Research [2014CB954100] ; National Natural Science Foundation of China [31300559, 30930072] ; Sichuan University ; Ministry of Science and Technology of China [2010DFB63500]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 国家国际科技合作专项
项目资助者: NSFC ; MOST
语种: 英语
DOI: 10.1111/jbi.12434
ISSN号: 0305-0270
WOS记录号: WOS:000350559900006
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/115580
Appears in Collections:生命科学学院_期刊论文

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Recommended Citation:
Sun, YS,Li, LL,Li, L,et al. Distributional dynamics and interspecific gene flow in Picea likiangensis and P. wilsonii triggered by climate change on the Qinghai-Tibet Plateau[J]. JOURNAL OF BIOGEOGRAPHY,2015,42(3):475-484.
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