文献类型：期刊文献

英文题名：Multiple glacial refugia for cool-temperate deciduous trees in northern East Asia: the Mongolian oak as a case study

作者：Zeng, Yan-Fei[1,2] Wang, Wen-Ting[3,4] Liao, Wan-Jin[3] Wang, Hong-Fang[3] Zhang, Da-Yong[3]

第一作者：曾艳飞

通信作者：Zeng, YF[1]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Key Lab Silviculture, State Forestry Adm, Beijing 100091, Peoples R China;[3]Beijing Normal Univ, MOE Key Lab Biodivers Sci & Ecol Engn, Beijing 100875, Peoples R China;[4]Northwest Univ Nationalities, Sch Math & Comp Sci, Lanzhou 730030, Peoples R China

年份：2015

卷号：24

期号：22

起止页码：5676-5691

外文期刊名：MOLECULAR ECOLOGY

收录：;Scopus(收录号：2-s2.0-84955185168);WOS:【SCI-EXPANDED(收录号:WOS:000365757300013)】；

基金：We thank the handling editor and two anonymous reviewers for their valuable comments and suggestions; Prof. Shou-Hsien Li and Prof. Victoria L Sork for their useful discussions and insightful comments. This work was supported by the National Natural Science Foundation of China (31270701, 31421063 and 31370398), Fundamental Research Funds for the Central Universities, and the '111' Program of Introducing Talents of Discipline to Universities.

语种：英文

外文关键词：East Asia; ecological niche modelling; molecular variation; northern refugia; Quaternary glaciations; temperate forest

摘要：In East Asia, temperate forests are predicted to have retracted southward to c. 30 degrees N during the last glacial maximum (LGM) based on fossil pollen data, whereas phylogeographic studies have often suggested glacial in situ survival of cool-temperate deciduous trees in their modern northern ranges. Here we report a study of the genetic diversity and structure of 29 natural Mongolian oak (Quercus mongolica) populations using 19 nuclear simple sequence repeat (nSSR) loci and four chloroplast DNA fragments. Bayesian clustering analysis with nSSRs revealed five groups, which were inferred by approximate Bayesian computation (ABC) to have diverged in multiple refugia through multiple glacial-interglacial cycles. Analysis of chloroplast DNA variation revealed four lineages that were largely but incompletely geographically disjunct. Ecological niche modelling (ENMs) indicated a southward range shift of the oak's distribution at the LGM, although high suitability scores were also evident in the Changbai Mts. (Northeast China), the Korean Peninsula, areas surrounding the Bohai Sea, and along the coast of the Russian Far East. In addition, endemic chloroplast DNA haplotypes and nuclear lineages occurred in high-latitude northern areas where the ENM predicted no suitable habitat. The combined evidence from nuclear and chloroplast DNA, and the results of the ENM clearly demonstrate that multiple northern refugia, including cryptic ones, were maintained across the current distributional range of the Mongolian oak during the LGM or earlier glacial periods. Though spatially limited, postglacial expansions from these refugia have led to a pattern of decreased genetic diversity with increasing latitude.