干旱区生态环境知识资源中心(Arid): Population genetic structure and adaptive differentiation of iron walnut Juglans regia subsp. sigillata in southwestern China

Arid

DOI	10.1002/ece3.5850
	Population genetic structure and adaptive differentiation of iron walnut Juglans regia subsp. sigillata in southwestern China
	Sun, Yi-Wei 1; Hou, Na 2; Woeste, Keith 3; Zhang, Chuchu 1; Yue, Ming 1,4; Yuan, Xiao-Ying 1; Zhao, Peng 1
通讯作者	Zhao, Peng
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2019
卷号	9 期号:24 页码:14154-14166
英文摘要	Southwestern (SW) China is an area of active tectonism and erosion, yielding a dynamic, deeply eroded landscape that influences the genetic structure of the resident populations of plants and animals. Iron walnut (Juglans regia subsp. sigillata) is a deciduous tree species endemic to this region of China and cultivated there for its edible nuts. We sampled 36 iron walnut populations from locations throughout the species' range in SW China and genotyped a total of 765 individuals at five chloroplast DNA regions and 22 nuclear microsatellite loci. Species distribution models were produced to predict the evolution and historical biogeography of iron walnut and to estimate the impacts of climate oscillations and orographic environments on the species' demography. Our results indicated that J. regia subsp. sigillata had relatively low genetic diversity, high interpopulation genetic differentiation, and asymmetric interpopulation gene flow. Based on DIYABC analysis, we identified two lineages of J. sigillata in southwestern China. The lineages (subpopulations) diverge during the last glacial period (similar to 1.34 Ma). Southwestern China was a glacial refuge during the last glacial period, but increasingly colder and arid climates might have fostered the fragmentation of J. regia subsp. sigillata within this refugium. Finally, we found that recent habitat fragmentation has led to a reduction in population connectivity and increased genetic differentiation by genetic drift in isolated populations. Our results support a conclusion that geological and climatic factors since the Miocene triggered the differentiation, evolutionary origin, and range shifts of J. sigillata in the studied region.
英文关键词	evolutionary history gene flow genetic differentiation genetic structure Juglans sigillata Southwest China
类型	Article
语种	英语
国家	Peoples R China ; USA
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000497837700001
WOS关键词	MICROSATELLITE MARKERS ; MOLECULAR PHYLOGENY ; QUATERNARY CLIMATE ; DNA POLYMORPHISM ; HUMAN IMPACTS ; EST-SSR ; PLANT ; PHYLOGEOGRAPHY ; CONSERVATION ; DIVERSITY
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
EI主题词	2019-11-21
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310958
作者单位	1.Northwest Univ, Coll Life Sci, Key Lab Resource Biol & Biotechnol Western China, Minist Educ, Xian 710069, Shaanxi, Peoples R China; 2.Guizhou Acad Forestry, Guiyang, Guizhou, Peoples R China; 3.Purdue Univ, Dept Forestry & Nat Resources, USDA Forest Serv Hardwood Tree Improvement & Rege, W Lafayette, IN 47907 USA; 4.Xian Bot Garden Shaanxi Prov, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yi-Wei,Hou, Na,Woeste, Keith,et al. Population genetic structure and adaptive differentiation of iron walnut Juglans regia subsp. sigillata in southwestern China[J],2019,9(24):14154-14166.
APA	Sun, Yi-Wei.,Hou, Na.,Woeste, Keith.,Zhang, Chuchu.,Yue, Ming.,...&Zhao, Peng.(2019).Population genetic structure and adaptive differentiation of iron walnut Juglans regia subsp. sigillata in southwestern China.ECOLOGY AND EVOLUTION,9(24),14154-14166.
MLA	Sun, Yi-Wei,et al."Population genetic structure and adaptive differentiation of iron walnut Juglans regia subsp. sigillata in southwestern China".ECOLOGY AND EVOLUTION 9.24(2019):14154-14166.