干旱区生态环境知识资源中心(Arid): Phylogeography suggest the Yili Valley being the glacial refuge of the genus Ixiolirion (Amaryllidaceae) in China

Arid

DOI	10.1080/14772000.2019.1612966
	Phylogeography suggest the Yili Valley being the glacial refuge of the genus Ixiolirion (Amaryllidaceae) in China
	Li, Yan1,2 ; Song, Feng 3; Zhang, Xue-Ni 1,2; Lv, Guang-Hui1,2
通讯作者	Lv, Guang-Hui
来源期刊	SYSTEMATICS AND BIODIVERSITY
ISSN	1477-2000
EISSN	1478-0933
出版年	2019
卷号	17 期号:4 页码:385-401
英文摘要	The Pleistocene climatic oscillations had profound effects on the demographic history and genetic diversification of plants in arid north-west China where some glacial refugia have been recognized. The genus Ixiolirion comprises three species, of which two, I. tataricum and I. songaricum (endemic), occur in China. In some locations they are sympatric. We investigated their population structure and population history in response to past climatic change using a sample of 619 individuals in 34 populations with nITS and ptDNA sequences. A significant genetic divergence between the two species was supported by a high level of pairwise genetic differentiation, very low gene flow, and phylogenetic analysis showing that I. songaricum haplotypes were monophyletic, whereas those of I. tataricum were polyphyletic. We found significant differentiation and phylogeographic structure in both species. The split of the two species was dated to the late Miocene (similar to 7 Ma), but deep divergence occurred in the mid-late Quaternary. A similar haplotype distribution pattern was found in both species: one to two dominant haplotypes across most populations, with unique haplotypes in a few populations or a geographic group. The genetic diversity, haplotype number, and haplotype diversity decreased from the Yili Valley to the central Tianshan and Barluk Mountains. Additionally, ptDNA analysis showed that I. tataricum diversified in the eastern Tianshan and Barluk Mountains, which might be due to physical barriers to long distance seed dispersal such as desert. In conclusion, our results indicated that the Yili Valley was likely a glacial refuge for Ixiolirion in China, with postglacial dispersal from the Yili Valley eastward to the eastern Tianshan Mountains, and northward to the Barluk Mountains. The climatic changes in the Miocene and Pleistocene and geographic barriers are important factors driving species divergence and differentiation of Ixiolirion and other taxa.
英文关键词	Climatic oscillations dispersal divergence population structure Tianshan Mountains
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000473888500001
WOS关键词	CHLOROPLAST DNA-SEQUENCES ; TIBETAN PLATEAU ; QUATERNARY CLIMATE ; GENETIC-STRUCTURE ; MOLECULAR PHYLOGEOGRAPHY ; ALLOPATRIC DIVERGENCE ; EVOLUTIONARY HISTORY ; ENVIRONMENTAL-CHANGE ; TIANSHAN MOUNTAINS ; RANGE EXPANSION
WOS类目	Biodiversity Conservation ; Biology
WOS研究方向	Biodiversity & Conservation ; Life Sciences & Biomedicine - Other Topics
来源机构	中国科学院新疆生态与地理研究所 ; 新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219045
作者单位	1.Xinjiang Univ, Inst Arid Ecol & Environm, Urumqi 830046, Peoples R China; 2.Xinjiang Univ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China; 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Li, Yan,Song, Feng,Zhang, Xue-Ni,et al. Phylogeography suggest the Yili Valley being the glacial refuge of the genus Ixiolirion (Amaryllidaceae) in China[J]. 中国科学院新疆生态与地理研究所, 新疆大学,2019,17(4):385-401.
APA	Li, Yan,Song, Feng,Zhang, Xue-Ni,&Lv, Guang-Hui.(2019).Phylogeography suggest the Yili Valley being the glacial refuge of the genus Ixiolirion (Amaryllidaceae) in China.SYSTEMATICS AND BIODIVERSITY,17(4),385-401.
MLA	Li, Yan,et al."Phylogeography suggest the Yili Valley being the glacial refuge of the genus Ixiolirion (Amaryllidaceae) in China".SYSTEMATICS AND BIODIVERSITY 17.4(2019):385-401.