文献类型：期刊文献

英文题名：Phylogeographic investigation ofElaeagnus mollisrevealed potential glacial refugia and allopatric divergence in central China

作者：Du, Shuhui[1,2] Ye, Zhanyang[1] Hu, Xiaoyan[2] Liu, Shuyu[1] Duan, Aiguo[1] Yu, Wendong[3] Zhang, Jianguo[1] Wang, Zhaoshan[1]

第一作者：Du, Shuhui

通信作者：Zhang, JG[1];Wang, ZS[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Silviculture,State Forestry Adm, Beijing 100091, Peoples R China;[2]Shanxi Agr Univ, Coll Forestry, Taigu 030800, Shanxi, Peoples R China;[3]Yangzhou Univ, Sch Hort & Plant Protect, Yangzhou 325009, Jiangsu, Peoples R China

年份：2020

卷号：306

期号：4

外文期刊名：PLANT SYSTEMATICS AND EVOLUTION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000542625700001)】；

基金：This work was supported by Special Fund for the Basic Scientific Research Operations of the Central Public Welfare Research Institutes (CAFYBB2016ZX003-1), Reward to Outstanding Doctors Working in Shanxi (SXYBKY201742), and Innovation Projects of Shanxi Agriculture University (2017YJ22).

语种：英文

外文关键词：Allopatric divergence; Elaeagnus mollis; Glacial refugia; nSSR

摘要：Climate and geography oscillations in the Quaternary profoundly influenced the distribution pattern and genetic structure of plant species. Phylogeographic investigations have been numerously conducted in biodiversity hotspot regions. However, other regions have received less attention and these places may serve as potential glacial refugia for plant species. In the study presented here, phylogeographic pattern ofElaeagnus mollis, a plant species exclusively distributed in central China, was investigated using multiple nSSR loci and chloroplast fragments. As an endangered species in China, the genetic diversity ofE. molliswas relatively high (N-a = 7.82,H-O = 0.532, andH(E) = 0.623). Genetic differentiation (F-ST) between the two main distribution regions, Shanxi and Shaanxi provinces, was 0.23177. STRUCTURE analysis of nSSR data as well as phylogenetic construction of chloroplast haplotypes clearly distinguished two distantly sublineages, corresponding well with two distribution regions. Multiple factors such as outcrossing were thought to contribute to the high level of genetic diversity. The topographically heterogeneous regions and the low dispersal ability of seed and pollen may lead to high genetic differentiation between these two regions. Two potential glacial refugia forE. mollislocated in adjacent regions to the Qinling Mountains and south of the Loess Plateau were revealed, and allopatric divergence in separated glacial refugia may directly lead to the present phylogeographic pattern of this species. This study set a solid foundation for future protection and sustainable utilization of this important germplasm resource.