Ecological divergence of two closely related Roscoea species associated with late Quaternary climate change

CORC > 西双版纳热带植物园 > 中国科学院西双版纳热带植物园 > 植物进化生态研究组

	Ecological divergence of two closely related Roscoea species associated with late Quaternary climate change
	Zhao, Jian-Li ; Gugger, Paul F. ; Xia, Yong-Mei ; Li, Qing-Jun
刊名	JOURNAL OF BIOGEOGRAPHY
	2016
卷号	43 期号:10 页码:1990-2001
关键词	climate change ecological speciation glacial-interglacial cycles Hengduan-Mountain Region Quaternary speciation Roscoea
中文摘要	AimEcological differentiation of closely related species has attracted wide attention to explore its evolutionary significance in speciation. In particular, the prevalence of ecological speciation of sister species driven by Quaternary climate changes is debated. Here, we used two parapatric sister species, Roscoea humeana and R. cautleoides, to test whether ecological speciation was associated with Quaternary climate changes in these taxa. LocationHengduan-Mountain Region (HMR), south-west of China. MethodsNuclear ribosomal (ITS) and chloroplast DNA (cpDNA: psbA-trnH and trnL-trnF) were sequenced from 200 individuals. Gene genealogies were reconstructed using network, Bayesian inference and maximum likelihood methods. Interspecific divergence times were estimated with an isolation with migration model. Suitable habitats for each species were estimated with ecological niche modelling using Maxent and BIOCLIM. Niche overlap and niche divergence were tested using Schoener's D and Warren's I. Principal components analysis (PCA), multivariate analysis of variance (MANOVA) and discriminant function analysis (DFA) were also used to test ecological differentiation. ResultsGene genealogies indicated that the low-elevational species R. cautleoides was derived from the high-elevational species R. humeana. Divergence among species occurred during the middle to late Quaternary (0.01-1.48Ma). The species distribution and phylogeographical pattern were inconsistent with a geographical barrier. Niche models and statistical analyses showed significant ecological differentiation. Main conclusionsDivergence between R. humeana and R. cautleoides was recent and coincident with Quaternary climate cycles. Ecological niche differentiation within Quaternary refugia may have promoted speciation.
公开日期	2016-11-02
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/10061]
专题	西双版纳热带植物园_植物进化生态研究组
推荐引用方式 GB/T 7714	Zhao, Jian-Li,Gugger, Paul F.,Xia, Yong-Mei,et al. Ecological divergence of two closely related Roscoea species associated with late Quaternary climate change[J]. JOURNAL OF BIOGEOGRAPHY,2016,43(10):1990-2001.
APA	Zhao, Jian-Li,Gugger, Paul F.,Xia, Yong-Mei,&Li, Qing-Jun.(2016).Ecological divergence of two closely related Roscoea species associated with late Quaternary climate change.JOURNAL OF BIOGEOGRAPHY,43(10),1990-2001.
MLA	Zhao, Jian-Li,et al."Ecological divergence of two closely related Roscoea species associated with late Quaternary climate change".JOURNAL OF BIOGEOGRAPHY 43.10(2016):1990-2001.