Phylogeography of the Arid Shrub Atraphaxis frutescens (Polygonaceae) in Northwestern China: Evidence From cpDNA Sequences

doi:10.1093/jhered/esu078

	Phylogeography of the Arid Shrub Atraphaxis frutescens (Polygonaceae) in Northwestern China: Evidence From cpDNA Sequences
	Xu, Zhe 1; Zhang, Ming-Li
	2015
发表期刊	JOURNAL OF HEREDITY
ISSN	0022-1503
卷号	106 期号:2 页码:184-195
摘要	Climatic fluctuations during the Pleistocene are usually considered as a significant factor in shaping intraspecific genetic variation and influencing demographic histories. To well-understand these processes in desert northwest China, we selected arid adapted Atraphaxis frutescens as the study species. Two cpDNA regions (psbK-psbI, psbB-psbH) were sequenced in 272 individuals from 33 natural populations across the range of this shrub, and 10 haplotypes were identified. It was found to contain high levels of total gene diversity (H-T = 0.858), and low levels of within-population diversity (H-S = 0.092). Analysis of molecular variance (AMOVA) indicates that genetic differentiation primarily occurs among groups of populations. Based on BEAST (Bayesian Evolutionary Analysis Sampling Trees) analysis, we suggest that intraspecific differentiation of the species, resulting from isolated populations, accompanied enhanced desertification during the middle and late Pleistocene. The expansion of the Gurbantunggut and Kumtag deserts in this area appears to have triggered divergence among populations of the western, central, and eastern portions of the region and shaped genetic differentiation among them. Two possible independent glacial refugia were predicted, the Ili Valley and the northern Junggar Basin. Extensive development of arid habitats (desert margin and arid piedmont grassland) coupled with a more equable climate because the early Holocene are factors likely to have generated recent expansion of A. frutescens.
关键词	Atraphaxis frutescens demography intraspecific differentiation northwestern China refugia
学科领域	Evolutionary Biology ; Genetics & Heredity
DOI	10.1093/jhered/esu078
收录类别	SCI
语种	英语
WOS关键词	QUATERNARY ENVIRONMENTAL-CHANGE ; TIANSHAN MOUNTAINS ; CLIMATIC OSCILLATIONS ; GENETIC-STRUCTURE ; WESTERN CHINA ; DESERT SHRUB ; CHLOROPLAST ; HISTORY ; PLANTS ; DNA
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000352296600005
出版者	OXFORD UNIV PRESS INC
文献子类	Article
出版地	CARY
EISSN	1465-7333
资助机构	China National Basic Research Special Program [2012FY111500] ; Innovation Research Group Program of Chinese Academy of Sciences and State Administration of Foreign Experts Affairs of China [KZCX2-YW-T09] ; State International Science and Technology Cooperation Program of China [2010DFA92720] ; Xinjiang Institute of Ecology and Geography, CAS
作者邮箱	zhangml@ibcas.ac.cn
作品OA属性	Bronze
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25674
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, Urumqi, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Xu, Zhe,Zhang, Ming-Li. Phylogeography of the Arid Shrub Atraphaxis frutescens (Polygonaceae) in Northwestern China: Evidence From cpDNA Sequences[J]. JOURNAL OF HEREDITY,2015,106(2):184-195.
APA	Xu, Zhe,&Zhang, Ming-Li.(2015).Phylogeography of the Arid Shrub Atraphaxis frutescens (Polygonaceae) in Northwestern China: Evidence From cpDNA Sequences.JOURNAL OF HEREDITY,106(2),184-195.
MLA	Xu, Zhe,et al."Phylogeography of the Arid Shrub Atraphaxis frutescens (Polygonaceae) in Northwestern China: Evidence From cpDNA Sequences".JOURNAL OF HEREDITY 106.2(2015):184-195.

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