Phylogeography and conservation genetics of the endangered Tugarinovia mongolica (Asteraceae) from Inner Mongolia, Northwest China

doi:10.1371/journal.pone.0211696

	Phylogeography and conservation genetics of the endangered Tugarinovia mongolica (Asteraceae) from Inner Mongolia, Northwest China
	Zhao, Yanfen 1; Pan, Borong ; Zhang, Mingli 2
	2019
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	14 期号:2
摘要	Tugarinovia (Family Asteraceae) is a monotypic genus. It's sole species, Tugarinovia mongolica Iljin, is distributed in the northern part of Inner Mongolia, with one additional variety, Tugarinovia mongolica var ovatifolia, which is distributed in the southern part of Inner Mongolia. The species has a limited geographical range and declining populations. To understand the phylogeographic structure of T. mongolica, we sequenced two chloroplast DNA regions (psbA-trnH and psbK-psbI) from 219 individuals of 16 populations, and investigated the genetic variation and phylogeographic patterns of T. mongolica. The results identified a total of 17 (H1-H17) chloroplast haplotypes. There were no haplotypes shared between the northern (T. mongolica) and southern groups (T. mongolica var. ovatifolia), and they formed two distinct lineages. The regional split was also supported by AMOVA and BEAST analyses. AMOVA showed the main variation that occurred between the two geographic groups. The time of divergence of the two groups can be dated to the early Pleistocene epoch, when climate fluctuations most likely resulted in the allopatric divergence of T. mongolica. The formation of the desert blocked genetic flow and enhanced the divergence of the northern and southern groups. Our results indicate that the genetic differences between T. mongolica and T. mongolica var. ovatifolia are consistent with previously proposed morphological differences. We speculate that the dry, cold climate and the expansion of the desert during the Quaternary resulted in the currently observed distribution of extant populations of T. mongolica. In the northern group, the populations Chuanjinsumu, Wuliji and Yingen displayed the highest genetic diversity and should be given priority protection. The southern group showed a higher genetic drift (F-ST = 1, G(ST) = 1), and the inbreeding load (H-S = 0) required protection for each population. Our results propose that the protection of T. mongolica should be implemented through in situ and ex situ conservation practices to increase the effective population size and genetic diversity.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0211696
收录类别	SCI
语种	英语
WOS关键词	ALLOPATRIC DIVERGENCE ; POPULATION-GROWTH ; MITOCHONDRIAL ; DESERT ; SHRUB ; CHLOROPLAST ; DISPERSAL ; PATTERNS ; HISTORY ; CLIMATE
WOS研究方向	Science & Technology - Other Topics
WOS记录号	WOS:000458026000046
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
资助机构	Biodiversity Conservation Strategy Program of Chinese Academy of Sciences [ZSSD-012] ; China National Key Basic Research ProgramNational Basic Research Program of China [2014CB954201]
作者邮箱	brpan@ms.xjb.ac.cn
作品OA属性	Green Submitted, gold, Green Published
引用统计	被引频次：15[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/2S10CLM1/19881
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, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yanfen,Pan, Borong,Zhang, Mingli. Phylogeography and conservation genetics of the endangered Tugarinovia mongolica (Asteraceae) from Inner Mongolia, Northwest China[J]. PLOS ONE,2019,14(2).
APA	Zhao, Yanfen,Pan, Borong,&Zhang, Mingli.(2019).Phylogeography and conservation genetics of the endangered Tugarinovia mongolica (Asteraceae) from Inner Mongolia, Northwest China.PLOS ONE,14(2).
MLA	Zhao, Yanfen,et al."Phylogeography and conservation genetics of the endangered Tugarinovia mongolica (Asteraceae) from Inner Mongolia, Northwest China".PLOS ONE 14.2(2019).

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