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题名: Phylogeny and historical biogeography of Isodon (Lamiaceae): Rapid radiation in south-west China and Miocene overland dispersal into Africa
作者: Yu, Xiang-Qin1, 2, 10; Maki, Masayuki3; Drew, Bryan T.4; Paton, Alan J.5; Li, Hsi-Wen6; Zhao, Jian-Li7; Conran, John G.8, 9; Li, Jie1, 2
刊名: MOLECULAR PHYLOGENETICS AND EVOLUTION
关键词: Intercontinental disjunction ; Isodon ; Overland dispersal ; Hengduan Mountains region ; Qinghai-Tibetan Plateau ; Rapid radiation
英文摘要: Rapid organismal radiations occurring on the Qinghai-Tibetan Plateau (QTP) and the mechanisms underlying Asia-Africa intercontinental disjunctions have both attracted much attention from evolutionary biologists. Here we use the genus Isodon (Lamiaceae), a primarily East Asian lineage with disjunct species in central and southern Africa, as a case study to shed light upon these processes. The molecular phylogeny and biogeographic history of Isodon were reconstructed using sequences of three plastid markers, the nuclear ribosomal internal transcribed spacer (nrITS), and a low-copy nuclear gene (LEAFY intron II). The evolution of chromosome numbers in this genus was also investigated using probabilistic models. Our results support a monophyletic Isodon that includes the two disjunct African species, both of which likely formed through allopolyploidy. An overland migration from Asia to Africa through Arabia during the early Miocene is proposed as the most likely explanation for the present disjunct distribution of Isodon. The opening of the Red Sea in the middle Miocene may appear to have had a major role in disrupting floristic exchange between Asia and Africa. In addition, a rapid radiation of Isodon was suggested to occur in the late Miocene. It corresponds with one of the major uplifts of the QTP and subsequent aridification events. Our results support the hypothesis that geological and climatic events play important roles in driving biological diversification of organisms distributed in the QTP area. (C) 2014 Elsevier Inc. All rights reserved.
出版日期: 2014-08-01
卷号: 77, 页码:183-194
DOI标识: 10.1016/j.ympev.2014.04.017
语种: 英语
ISSN号: 1055-7903
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18226
Appears in Collections:中国西南野生生物种质资源库_期刊论文

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作者单位: 1.Chinese Acad Sci, Lab Plant Phylogenet & Conservat, Xishuangbanna Trop Bot Garden, Kunming 650223, Yunnan, Peoples R China
2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Ctr Integrat Conservat, Menglun 666303, Yunnan, Peoples R China
3.Tohoku Univ, Grad Sch Life Sci, Div Ecol & Evolutionary Biol, Sendai, Miyagi 9808578, Japan
4.Univ Florida, Dept Biol, Museum Nat Hist, Gainesville, FL 32611 USA
5.Royal Bot Gardens, Herbarium, Richmond TW9 3AB, Surrey, England
6.Chinese Acad Sci, Kunming Inst Bot, Herbarium KUN, Kunming 650204, Yunnan, Peoples R China
7.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Menglun 666303, Yunnan, Peoples R China
8.Univ Adelaide, Ctr Evolutionary Biol & Biodivers, Adelaide, SA 5005, Australia
9.Univ Adelaide, Sprigg Geobiol Ctr, Adelaide, SA 5005, Australia
10.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Yu,Xiang-Qin;Maki,Masayuki;Drew,Bryan T.;Paton,Alan J.;Li,Hsi-Wen;Zhao,Jian-Li;Conran,John G.;Li,Jie.Phylogeny and historical biogeography of Isodon (Lamiaceae): Rapid radiation in south-west China and Miocene overland dispersal into Africa,MOLECULAR PHYLOGENETICS AND EVOLUTION,2014,77():183-194
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