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题名: Phylogenetic and biogeographic analyses of the Sino-Himalayan endemic genus Cyananthus (Campanulaceae) and implications for the evolution of its sexual system
作者: Zhou, Zhuo1, 3; Hong, Deyuan2; Niu, Yang1, 3; Li, Guodong1, 3; Nie, Zelong1; Wen, Jun4; Sun Hang(孙航)1
刊名: MOLECULAR PHYLOGENETICS AND EVOLUTION
关键词: Cyananthus ; Sino-Himalaya ; Sexual system evolution ; Phylogeny ; Biogeography
英文摘要: Cyananthus (Campanulaceae) is a small genus consisting of ca. 20 species endemic to the Sino-Himalayan region. Based on phylogenetic analysis using nuclear ribosomal ITS and four plastid markers (matIC, rbcL, psbA-trnH and trnG-S), our results strongly support the monophyly of Cyananthus and its close relationship with the Codonopsis clade of the platycodonoids. Three major clades are supported, corresponding to the three sections of the genus, with sect. Cyananthus, which mainly occurs in the Himalayas, being a sister to the clade comprising the other two sections (sect. Stenolobi and sect. Annul) distributed primarily in the Hengduan Mountain region. We also observed that Cyananthus exhibits variation in its sexual system, possessing both hermaphroditic and gynodioecious species. Character evolution analyses using Mesquite suggest that gynodioecy evolved from hermaphroditism only once in sect. Stenolobi, but that there is a reversal in C. forrnosus. Molecular dating and biogeographic analysis with LAGRANGE support dispersal from the Himalayas to the Hengduan Mountains during the early evolution of Cyananthus. The extensive uplift of the Qinghai-Tibetan Plateau and the Hengduan Mountains played an important role in the subsequent diversification of the genus. (C) 2013 Elsevier Inc. All rights reserved.
出版日期: 2013-09-01
卷号: 68, 期号:3, 页码:482-497
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/151853/16799
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Smithsonian Inst, Natl Museum Nat Hist, Dept Bot, Washington, DC 20013 USA

Recommended Citation:
Zhou, Zhuo; Hong, Deyuan; Niu, Yang; Li, Guodong; Nie, Zelong; Wen, Jun; Sun, Hang.Phylogenetic and biogeographic analyses of the Sino-Himalayan endemic genus Cyananthus (Campanulaceae) and implications for the evolution of its sexual system,MOLECULAR PHYLOGENETICS AND EVOLUTION,2013,68(3):482-497
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