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题名: Molecular phylogeny and biogeography of Holcoglossum (Orchidaceae: Aeridinae) based on nuclear ITS, and chloroplast trnL-F and matK
作者: Fan, Jie1, 2, 3; Qin, Hai-Ning1, 2; null(李德铢)4; Jin, Xiao-Hua1, 2, 4
刊名: TAXON
关键词: biogeography ; Hengduan Mountains (Hengduanshan) ; Holcoglossum ; molecular phylogeny ; Orchidaceae
英文摘要: The phylogenetic relationships and biogeography of the Asiatic orchid genus Holcoglossum (Vandeae, Aeridinae) were inferred from sequences of chloroplast matK and trnL-F genes and nuclear ITS regions of 25 taxa. (12 Holcoglossum, 11 Aeridinae, 2 outgroups). Analysis of combined datasets with parsimony and Bayesian methods revealed that Holcoglossum is highly Supported as monophyletic, including two debatable species, H. amesianum and H. subulifolium, and consists of three well-supported major subclades which agree well with biodiversity centers of Holcoglossum: one tropical subclade comprising four species, another forming a polytomy comprising six species restricted to the temperate alpine region of the Hengduan Mountains, and the third with two species somewhat distributed between the first two regions. However, these three major subclades are only partly in accordance with previous infrageneric classifications based on morphological characters. The lip lamella, long and conical spur and tapering stipe seem to have evolved at least twice in Holcoglossum, similarly the pollination system shift has occurred at least twice. Vicariance analyses and molecular phylogeny suggest that Holcoglossum dispersed from tropical regions to the Hengduan Mountains and then radiated there as a result of the uplift of Qinghai-Tibetan Plateau.
出版日期: 2009-08-01
卷号: 58, 期号:3, 页码:849-861
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/14101
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, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
2.Chinese Acad Sci, Inst Bot, Herbarium, Beijing 100093, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
4.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Biodivers & Biogeog, Kunming 650204, Peoples R China

Recommended Citation:
Fan, J; Qin, HN; Li, DZ; Jin, XH.Molecular phylogeny and biogeography of Holcoglossum (Orchidaceae: Aeridinae) based on nuclear ITS, and chloroplast trnL-F and matK,TAXON,2009,58(3):849-861
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