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题名: Phylogeny and biogeographic diversification of Maianthemum (Ruscaceae: Polygonatae)
作者: Meng, Ying1, 2, 3; Wen, Jun1, 4, 5; Nie, Ze-Long1, 3; Sun Hang(孙航)1; Yang Yongping(杨永平)1, 2
刊名: MOLECULAR PHYLOGENETICS AND EVOLUTION
关键词: Eastern Asia ; Eastern Himalaya ; Biogeographic diversification ; Maianthemum ; North America ; Ruscaceae ; Smilacina
英文摘要: Maianthemum (Ruscaceae) comprises 28-38 species and includes the two traditionally recognized genera: Maianthemum sensu stricto and Smilacina. Thirty-seven samples representing 22 species of Maianthemum and six closely related outgroup taxa were sequenced for eight chloroplast and nuclear markers (trnL-F, rps16, rpl16, psbA-trnH, rbcL, ndhF, trnK, and ITS) with a total length of nearly 10,000 base pairs. Phylogenetic analyses supported the monophyly of Maianthemum with Maianthemum sensu stricto nested within Smilacina. Almost all species from the eastern Himalayan region in SW China except for Maianthemum tatsienense and M. stenolobum form a well supported clade. This clade is characterized morphologically by short filaments and large anthers, relatively large flowers, and pubescent stems and leaves. Maianthemum tatsienense and M. stenolobum from SW to central China form another clade. The other species from eastern Asia (central to NE China and Japan) and the New World fall into several clades. The intercontinental disjunction between eastern Asia and North America in Maianthemum sensu stricto is estimated to be at 1.68 million years ago (mya) with the Bayesian relaxed clock relying on uncorrelated rates. A recent radiation at about 2.04 mya is suggested in the high mountains of SW China, corresponding to the geographical heterogeneity in that region after the uplift of the Himalayas. Long distance dispersal by birds may have facilitated the evolution of their intercontinental disjunction and their biogeographic diversifications in SW China. (C) 2008 Elsevier Inc. All rights reserved.
中文摘要: Maianthemum (Ruscaceae) comprises 28-38 species and includes the two traditionally recognized genera: Maianthemum sensu stricto and Smilacina. Thirty-seven samples representing 22 species of Maianthemum and six closely related outgroup taxa were sequenced for eight chloroplast and nuclear markers (trnL-F, rps16, rpl16, psbA-trnH, rbcL, ndhF, trnK, and ITS) with a total length of nearly 10,000 base pairs. Phylogenetic analyses supported the monophyly of Maianthemum with Maianthemum sensu stricto nested within Smilacina. Almost all species from the eastern Himalayan region in SW China except for Maianthemum tatsienense and M. stenolobum form a well supported clade. This clade is characterized morphologically by short filaments and large anthers, relatively large flowers, and pubescent stems and leaves. Maianthemum tatsienense and M. stenolobum from SW to central China form another clade. The other species from eastern Asia (central to NE China and Japan) and the New World fall into several clades. The intercontinental disjunction between eastern Asia and North America in Maianthemum sensu stricto is estimated to be at 1.68 million years ago (mya) with the Bayesian relaxed clock relying on uncorrelated rates. A recent radiation at about 2.04 mya is suggested in the high mountains of SW China, corresponding to the geographical heterogeneity in that region after the uplift of the Himalayas. Long distance dispersal by birds may have facilitated the evolution of their intercontinental disjunction and their biogeographic diversifications in SW China. (C) 2008 Elsevier Inc. All rights reserved.
出版日期: 2008-11-01
卷号: 49, 期号:2, 页码:424-434
DOI标识: 10.1016/j.ympev.2008.07.017
语种: 英语
收录类别: SCI
学科分类: Biochemistry & Molecular Biology; Evolutionary Biology; Genetics & Heredity
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/151853/2625
Appears in Collections:中国科学院青藏高原研究所昆明部_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res Kunming, Kunming 650204, Yunnan, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
4.Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20013 USA
5.Chinese Acad Sci, Inst Bot, Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China

Recommended Citation:
Meng, Y; Wen, J; Nie, ZL; Sun, H; Yang, YP.Phylogeny and biogeographic diversification of Maianthemum (Ruscaceae: Polygonatae),MOLECULAR PHYLOGENETICS AND EVOLUTION,2008,49(2):424-434
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