Insights Into the Significance of the Chinense Loess Plateau for Preserving Biodiversity From the Phylogeography of Speranskia tuberculata (Euphorbiaceae)

doi:10.3389/fpls.2021.604251

KIB OpenIR

	Insights Into the Significance of the Chinense Loess Plateau for Preserving Biodiversity From the Phylogeography of Speranskia tuberculata (Euphorbiaceae)
	Ye,Jun-Wei ; Wu,Hai-Yang ; Fu,Meng-Jiao ; Zhang,Pei ; Tian,Bin
	2021
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	12 页码:604251
摘要	The significance of the Chinese Loess Plateau (CLP) in maintaining biodiversity for northern China has rarely been shown, as previous phylogeographic studies are mostly woody species and they have revealed that Quaternary refugia are mainly located in mountain regions. We selected a drought-enduring endemic herb, Speranskia tuberculata (Euphorbiaceae), to determine its glacial refugia and postglacial demographic history. To this end, we sampled 423 individuals from 38 populations covering its entire geographic distribution. Three chloroplast DNA (cpDNA) fragments, two low-copy nuclear genes, and six nuclear microsatellites (nSSRs) were used and supplemented with ecological niche modeling (ENM) to infer the phylogeographic history of this species. Populations with private haplotypes and high haplotype diversity of cpDNA are mainly located in the CLP or scattered around northeastern China and the coastal region. Spatial expansion, detected using a neutrality test and mismatch distribution, may have resulted in a widely distributed ancestral cpDNA haplotype, especially outside of the CLP. For nuclear DNA, private haplotypes are also distributed mainly in the CLP. In nSSRs, STRUCTURE clustering identified two genetic clusters, which are distributed in the west (western cluster) and east (eastern cluster), respectively. Many populations belonged, with little to no admixture, to the western cluster while (hardly) pure populations of the eastern cluster were barely found. Genetic differentiation is significantly correlated with geographic distance, although genetic diversity is uniformly distributed. ENM suggests that the distribution of S. tuberculata has recently expanded northwards from the southern CLP, whereas it has experienced habitat loss in the south. Thus, S. tuberculata populations probably survived the last glacial maximum (LGM) in the southern CLP and experienced post-glacial expansion. Wind-dispersed pollen could bring the majority of genotypes to the front during spatial expansion, resulting in uniformly distributed genetic diversity. Based on evidence from molecular data and vegetation and climate changes since the LGM, we conclude that drought-enduring species, especially herbaceous species, are likely to have persisted in the CLP during the LGM and to have experienced expansion to other regions in northern China.
关键词	Chinese Loess Plateau refugia nuclear microsatellites Quaternary Speranskia tuberculata MOLECULAR PHYLOGEOGRAPHY GENETIC CONSEQUENCES DIVERSITY FOREST CHINA PALAEOVEGETATION INFERENCE SOFTWARE CLIMATE PLANTS
DOI	10.3389/fpls.2021.604251
WOS记录号	WOS:000619050200001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73275
专题	中国科学院昆明植物研究所
作者单位	1.[Ye, Jun-Wei 2.Wu, Hai-Yang 3.Fu, Meng-Jiao 4.Zhang, Pei 5.Southwest Forestry Univ, Minist Educ, Key Lab Forest Resources Conservat & Utilizat Sou, Kunming, Yunnan, Peoples R China 6.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Ye,Jun-Wei,Wu,Hai-Yang,Fu,Meng-Jiao,et al. Insights Into the Significance of the Chinense Loess Plateau for Preserving Biodiversity From the Phylogeography of Speranskia tuberculata (Euphorbiaceae)[J]. FRONTIERS IN PLANT SCIENCE,2021,12:604251.
APA	Ye,Jun-Wei,Wu,Hai-Yang,Fu,Meng-Jiao,Zhang,Pei,&Tian,Bin.(2021).Insights Into the Significance of the Chinense Loess Plateau for Preserving Biodiversity From the Phylogeography of Speranskia tuberculata (Euphorbiaceae).FRONTIERS IN PLANT SCIENCE,12,604251.
MLA	Ye,Jun-Wei,et al."Insights Into the Significance of the Chinense Loess Plateau for Preserving Biodiversity From the Phylogeography of Speranskia tuberculata (Euphorbiaceae)".FRONTIERS IN PLANT SCIENCE 12(2021):604251.