Distinct late Pleistocene subtropical-tropical divergence revealed by fifteen low-copy nuclear genes in a dominant species in South-East China

doi:10.1038/s41598-021-83473-w

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	Distinct late Pleistocene subtropical-tropical divergence revealed by fifteen low-copy nuclear genes in a dominant species in South-East China
	Ye,Jun-Wei ; Li,De-Zhu
	2021
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	11 期号:1 页码:4147
摘要	In East Asia, genetic divergence is usually considered to be correlated to different floristic regions, however, subtropical-tropical divergence is largely ignored, compared to widely explored temperate-subtropical divergence. Lindera aggregata (Lauraceae), a dominant species in South-East China was selected to address this issue. Fifteen low-copy nuclear genes (LCGs) and four chloroplast DNA (cpDNA) fragments were used to detect its evolutionary history. In LCGs, STRUCTURE and dated Bayesian phylogeny analyses detect distinct subtropical-tropical divergence since late Pleistocene. Approximate Bayesian calculation (ABC) further supports the distinct subtropical-tropical divergence, and close related Taiwan and South China populations are diverged at the last interglacial. Isolation by distance, isolation by environment and isolation by resistance analyses suggest the current climatic difference rather than geographical distance contributes to the genetic differentiation. Principle component analysis shows populations of tropical cluster occur in warmer area with higher precipitation. Ancestral area reconstruction based on Bayesian phylogeny indicates that ancestral L. aggregata populations are distributed in tropical region. In cpDNA, although unique haplotypes are found in tropical region, distinct subtropical-tropical divergence is absent. In conclusion, distinct late Pleistocene subtropical-tropical divergence of L. aggregata is triggered by climate. It is likely that L. aggregata is originated in Southwest-South China and experienced hierarchical dispersal from south to north. The South China Sea land bridge has dual role in connecting or isolating Taiwan and mainland populations since the last glaciation.
关键词	BROAD-LEAVED FOREST PHYLOGEOGRAPHIC BREAKS DNA-SEQUENCE SEA POLYMORPHISM CHLOROPLAST INFERENCE DYNAMICS HISTORY FLOW
DOI	10.1038/s41598-021-83473-w
WOS记录号	WOS:000621416400020
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73544
专题	中国科学院昆明植物研究所
作者单位	1.[Ye, Jun-Wei 2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species Southwest China, Kunming 650201, Yunnan, Peoples R China 3.Shanghai Sci & Technol Museum, Shanghai Nat Hist Museum, Nat Hist Res Ctr, Shanghai 200041, Peoples R China
推荐引用方式 GB/T 7714	Ye,Jun-Wei,Li,De-Zhu. Distinct late Pleistocene subtropical-tropical divergence revealed by fifteen low-copy nuclear genes in a dominant species in South-East China[J]. SCIENTIFIC REPORTS,2021,11(1):4147.
APA	Ye,Jun-Wei,&Li,De-Zhu.(2021).Distinct late Pleistocene subtropical-tropical divergence revealed by fifteen low-copy nuclear genes in a dominant species in South-East China.SCIENTIFIC REPORTS,11(1),4147.
MLA	Ye,Jun-Wei,et al."Distinct late Pleistocene subtropical-tropical divergence revealed by fifteen low-copy nuclear genes in a dominant species in South-East China".SCIENTIFIC REPORTS 11.1(2021):4147.