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题名: Phylogenetic relationships in the Pterygiella complex (Orobanchaceae) inferred from molecular and morphological evidence
作者: Dong, Li-Na1, 4, 5; null(王红)1, 2; Wortley, Alexandra H.3; Lu, Lu1, 2; null(李德铢)1, 2
刊名: BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
关键词: Eastern Asia ; fruit ; genic regions ; hemiparasite ; phylogenetic analysis ; Phtheirospermum ; Pseudobartsia ; Xizangia
英文摘要: The Pterygiella complex, i.e. Pterygiella, Phtheirospermum, Pseudobartsia and Xizangia, is controversial in terms of both its relationships and taxonomic status. The genera of the complex are all species-poor and endemic to eastern Asia. In this study, we sampled all taxa in the complex for seven genic regions [atpB-rbcL, atpH-I, psbA-trnH, rpl16 intron, trnL-F, trnS-G and internal transcribed spacer (ITS)], which were analysed separately and in combination. We examined capsule and seed morphology of these genera using scanning electron microscopy (SEM). Our results indicate that the complex is polyphyletic and comprises two clades. The first, designated Pterygiella complex I', includes only Phtheirospermum japonicum. This clade is uniquely diagnosed by its papery yellow capsule and reticulate secondary thickening on the seed coat. The second clade, Pterygiella complex II', includes Phtheirospermum tenuisectum, P.parishii, P.muliense, Pseudobartsia, Xizangia and Pterygiella. These taxa share a coriaceous capsule. Pterygiella is monophyletic and is characterized by eglandular, unicellular, pilose hairs on the capsule and hook-like protuberances on the horizontal ridges of the striate or reticulate seed coat. Excluding P.japonicum, the remaining taxa of Phtheirospermum cluster together and are sister to Pterygiella. Xizangia bartschioides and Pseudobartsia yunnanensis are separated from Pterygiella and Phtheirospermum, respectively, and are supported as genera by molecular and morphological evidence.(c) 2013 The Linnean Society of London
出版日期: 2013-03-01
卷号: 171, 期号:3, 页码:491-507
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0024-4074
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/16499
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, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Plant Germplasm & Genom Ctr, Germplasm Bank Wild Species, Kunming 650204, Yunnan, Peoples R China
3.Royal Bot Garden Edinburgh, Edinburgh EH3 5LR, Midlothian, Scotland
4.Guangxi Zhuang Autonomous Reg, Guangxi Inst Bot, Guilin 541006, Guangxi, Peoples R China
5.Chinese Acad Sci, Guilin 541006, Guangxi, Peoples R China

Recommended Citation:
Dong, Li-Na; Wang, Hong; Wortley, Alexandra H.; Lu, Lu; Li, De-Zhu.Phylogenetic relationships in the Pterygiella complex (Orobanchaceae) inferred from molecular and morphological evidence,BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2013,171(3):491-507
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