Reticulate evolution and sea-level fluctuations together drove species diversification of slipper orchids (Paphiopedilum) in South-East Asia

doi:10.1111/mec.13189

	Reticulate evolution and sea-level fluctuations together drove species diversification of slipper orchids (Paphiopedilum) in South-East Asia
	Guo, Yan-Yan ; Luo, Yi-Bo; Liu, Zhong-Jian ; Wang, Xiao-Quan
	2015
发表期刊	MOLECULAR ECOLOGY
ISSN	0962-1083
卷号	24 期号:11 页码:2838-2855
摘要	South-East Asia covers four of the world's biodiversity hotspots, showing high species diversity and endemism. Owing to the successive expansion and contraction of distribution and the fragmentation by geographical barriers, the tropical flora greatly diversified in this region during the Tertiary, but the evolutionary tempo and mode of species diversity remain poorly investigated. Paphiopedilum, the largest genus of slipper orchids comprising nearly 100 species, is mainly distributed in South-East Asia, providing an ideal system for exploring how plant species diversity was shaped in this region. Here, we investigated the evolutionary history of this genus with eight cpDNA regions and four low-copy nuclear genes. Discordance between gene trees and network analysis indicates that reticulate evolution occurred in the genus. Ancestral area reconstruction suggests that vicariance and long-distance dispersal together led to its current distribution. Diversification rate variation was detected and strongly correlated with the species diversity in subg. Paphiopedilum (similar to 80 species). The shift of speciation rate in subg. Paphiopedilum was coincident with sea-level fluctuations in the late Cenozoic, which could have provided ecological opportunities for speciation and created bridges or barriers for gene flow. Moreover, some other factors (e.g. sympatric distribution, incomplete reproductive barriers and clonal propagation) might also be advantageous for the formation and reproduction of hybrid species. In conclusion, our study suggests that the interplay of reticulate evolution and sea-level fluctuations has promoted the diversification of the genus Paphiopedilum and sheds light into the evolution of Orchidaceae and the historical processes of plant species diversification in South-East Asia.
关键词	biogeography hybridization molecular phylogeny Orchidaceae Paphiopedilum speciation
学科领域	Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
DOI	10.1111/mec.13189
收录类别	SCI
语种	英语
WOS关键词	DETECTING TEMPORAL SHIFTS ; PINUS-DENSATA ; RECONSTRUCTING PATTERNS ; NUCLEAR ; CYPRIPEDIOIDEAE ; HYBRIDIZATION ; DIVERGENCE ; ORIGIN ; DNA ; PHYLOGENETICS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000355228800019
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
EISSN	1365-294X
资助机构	National Natural Science Foundation of China [31330008, 30730010, 31300179] ; Chinese Academy of Sciences [KJZD-EW-L07]
作者邮箱	liuzj@sinicaorchid.org ; xiaoq_wang@ibcas.ac.cn
引用统计	被引频次：40[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/2S10CLM1/25738
专题	系统与进化植物学国家重点实验室
作者单位	1.[Guo, Yan-Yan 2.Luo, Yi-Bo 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 4.Natl Orchid Conservat Ctr China & Orchid Conserva, Shenzhen Key Lab Orchid Conservat & Utilizat, Shenzhen 518114, Peoples R China 5.Orchid Conservat & Res Ctr Shenzhen, Shenzhen 518114, Peoples R China 6.Tsinghua Univ, Grad Sch Shenzhen, Ctr Biotechnol & BioMed, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Guo, Yan-Yan,Luo, Yi-Bo,Liu, Zhong-Jian,et al. Reticulate evolution and sea-level fluctuations together drove species diversification of slipper orchids (Paphiopedilum) in South-East Asia[J]. MOLECULAR ECOLOGY,2015,24(11):2838-2855.
APA	Guo, Yan-Yan,Luo, Yi-Bo,Liu, Zhong-Jian,&Wang, Xiao-Quan.(2015).Reticulate evolution and sea-level fluctuations together drove species diversification of slipper orchids (Paphiopedilum) in South-East Asia.MOLECULAR ECOLOGY,24(11),2838-2855.
MLA	Guo, Yan-Yan,et al."Reticulate evolution and sea-level fluctuations together drove species diversification of slipper orchids (Paphiopedilum) in South-East Asia".MOLECULAR ECOLOGY 24.11(2015):2838-2855.

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