期刊
BIOCHEMICAL SYSTEMATICS AND ECOLOGY
卷 39, 期 4-6, 页码 787-796出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bse.2011.07.015
关键词
Lagochilus ilicifolius; Phylogeography; Northern China; Aridification; Desert expansion
资金
- CAS [KZCX2-EW-305]
- Xinjiang Institute of Ecology and Geography, Chinese Academy of Science
Using two chloroplast DNA intergenic spacers, a phylogeographical study of Lagochilus ilicifolius with 168 individuals from 14 populations was performed to assess geographical patterns and genetic variation in relation to past climate change. Population structure and history were inferred by nested clade analysis, neutrality tests, divergence time estimates, and mismatch distribution analysis. Twelve haplotypes were identified. Genetic differentiation among populations within groups was also elevated (F-SC = 0.772), suggesting restricted gene flow among populations within groups. Divergence time was at approximately 0.71 Ma, consistent with aridification and desert expansion during the middle Pleistocene. The Helan Mountains contained a large proportion of the haplotypes, which implies that the region may be the center of diversification for the species, whereas the Loess Plateau as a dispersal corridor for postglacial re-colonization northward. Climatic oscillation, aridification, and desert expansion within these regions have molded current distribution and biodiversity of L ilicifolius. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据