Phylogeographic History of Atraphaxis Plants in Arid Northern China and the Origin of A. bracteata in the Loess Plateau

doi:10.1371/journal.pone.0163243

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	Phylogeographic History of Atraphaxis Plants in Arid Northern China and the Origin of A. bracteata in the Loess Plateau
	Xu, Zhe ; Zhang, Ming-Li ; Cohen, James I.
刊名	PLOS ONE
	2016
卷号	11 期号:9
ISSN号	1932-6203
DOI	10.1371/journal.pone.0163243
文献子类	Article
英文摘要	In China, species of Atraphaxis (Polygonaceae) primarily inhabit arid zones across temperate steppe and desert regions. The complex geologic history (e.g., expansion of deserts) and extreme climate shifts of the region appear to have played an important role in shaping the phylogeography of Atraphaxis. The present study focuses on species-level phylogeo-graphic patterns of Atraphaxis in China, with the goal of determining the impact of past environmental changes, in northern China, on the evolutionary history of the genus. Five hundred and sixty-four individuals distributed among 71 populations of 11 species of Atraphaxis from across the geographic range of the genus were studied using sequence data from two plastid spacers, psbK-psbI and psbB-psbH. The results demonstrate that most chloroplast haplotypes are species-specific, except for some present among widespread species. The phylogeny of Atraphaxis was well structured, and molecular dating analyses suggest that the main divergence events occurred during the late Pliocene and Pleistocene (5.73-0.03 million years ago). The statistical dispersal-vicariance analysis (S-DIVA) results provide evidence that phylogeographic patterns for the genus were characterized by both vicariance events and regional dispersal. The presented data suggest that the rapid expansion of deserts and climatic changes in northern China during the late Pliocene and Pleistocene have driven the diversification and spread of Atraphaxis in the region. The expansion of the Tengger Desert provided appropriate conditions for the origin of A. bracteata. Additionally, a contact zone in the north of the Hexi Corridor was identified as having played a significant role as a migratory route for species in adjacent areas.
学科主题	Multidisciplinary Sciences
出版地	SAN FRANCISCO
WOS关键词	CHLOROPLAST DNA ; TIBETAN PLATEAU ; CLIMATIC OSCILLATIONS ; MOLECULAR PHYLOGENY ; SEQUENCE VARIATION ; GENETIC DIVERSITY ; CPDNA SEQUENCES ; NORTHWEST CHINA ; WESTERN CHINA ; EARLY MIOCENE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000383893200091
资助机构	China National Basic Research ProgramNational Basic Research Program of China [2014CB954201] ; Xinjiang Institute of Ecology and Geography, Chinese Academy of SciencesChinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24391]
专题	系统与进化植物学国家重点实验室
作者单位	1.[Xu, Zhe 2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, Urumqi 830011, Peoples R China 4.[Cohen, James I.] Kettering Univ, Appl Biol, 1700 Univ Ave, Flint, MI 48504 USA
推荐引用方式 GB/T 7714	Xu, Zhe,Zhang, Ming-Li,Cohen, James I.. Phylogeographic History of Atraphaxis Plants in Arid Northern China and the Origin of A. bracteata in the Loess Plateau[J]. PLOS ONE,2016,11(9).
APA	Xu, Zhe,Zhang, Ming-Li,&Cohen, James I..(2016).Phylogeographic History of Atraphaxis Plants in Arid Northern China and the Origin of A. bracteata in the Loess Plateau.PLOS ONE,11(9).
MLA	Xu, Zhe,et al."Phylogeographic History of Atraphaxis Plants in Arid Northern China and the Origin of A. bracteata in the Loess Plateau".PLOS ONE 11.9(2016).