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Phylogenetic relationships of Gastrochilus (Orchidaceae) based on nuclear and plastid DNA data
Liu, Qiang1; Song, Yu; Jin, Xiao-Hua; Gao, Jiang-Yun
2019
Source PublicationBOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN0024-4074
Volume189Issue:3Pages:228-243
Abstract

Gastrochilus and related taxa is a diverse group of horticultural and threatened orchids occurring mainly in South-East Asia. Although Gastrochilus is a small genus, the generic and interspecific relationships of it are still not well understood. Here, we present a molecular study using sequence data from nuclear internal transcribed spacer (ITS) and four plastid DNA regions (matK, psbA-trnH, psbM-trnD, trnL-F) to clarify these relationships. Our results indicated that Gastrochilus is monophyletic and subdivided into five clades. Haraella is nested in Pomatocalpa, and together they are sister to Gastrochilus. Five morphological characters (epichile hairs, stem type, leaf size, dorsal sepal size and presence of leaf spots) agree well with the molecular phylogenetic trees and can be used to subdivide Gastrochilus. Two new species are separated from G. calceolaris, and the status of the confused species G. somai and G. fuscopunctatus is clarified as a distinct species. The molecular phylogenetic trees and evaluation of characters indicate that shifts in pollination system in Gastrochilus have occurred independently at least three times.

KeywordMolecular Phylogeny Evolution Aeridinae Biogeography Vandeae
Subject AreaPlant Sciences
DOI10.1093/botlinnean/boy084
Indexed BySCI
Language英语
WOS IDWOS:000462550100002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11180
Collection支撑系统
Affiliation1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Ctr Integrat Conservat, Mengla 666303, Yunnan, Peoples R China
2.Chinese Acad Sci, Southeast Asia Biodivers Res Inst, Yezin 05282, Nay Pyi Taw, Myanmar
3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot & Herba, Beijing 100093, Peoples R China
4.Yunnan Univ, Lab Ecol & Evolutionary Biol, State Key Lab Conservat & Utilizat Bioresource Yu, Kunming 650091, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Liu, Qiang,Song, Yu,Jin, Xiao-Hua,et al. Phylogenetic relationships of Gastrochilus (Orchidaceae) based on nuclear and plastid DNA data[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2019,189(3):228-243.
APA Liu, Qiang,Song, Yu,Jin, Xiao-Hua,&Gao, Jiang-Yun.(2019).Phylogenetic relationships of Gastrochilus (Orchidaceae) based on nuclear and plastid DNA data.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,189(3),228-243.
MLA Liu, Qiang,et al."Phylogenetic relationships of Gastrochilus (Orchidaceae) based on nuclear and plastid DNA data".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 189.3(2019):228-243.
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