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Molecular phylogeny,biogeography and character evolution of the montane genus incarvillea Juss.(Bignoniaceae)

Plant Diversity 2021年第1期43卷 1-14页

作者： Santosh Kumar Rana Dong Luo Hum Kala Rana Shaotian Chen Hang Sun CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of the Chinese Academy of Sciences Beijing 100049China College of Pharmaceutical Science Yunnan University of Chinese MedicineKunming 650500China

The complex orogeny of the Himalaya and the Qinghai-Tibet Plateau(QTP)fosters habitat fragmentation that drives morphological differentiation of mountain plant species.Consequently,determining phylogenetic relationships between plant subgenera using morphological characters is unreliable.Therefore,we used both molecular phylogeny and historical biogeographic analysis to infer the ancestral states of several vegetative and reproductive characters of the montane genus incarvillea.We determined the taxonomic position of the genus incarvillea within its family and inferred the biogeographical origin of taxa through Bayesian inference(BI),maximum likelihood(ML)and maximum parsimony(MP)analyses using three molecular data sets(trnL-trnF sequences,nr ITS sequences,and a data set of combined sequences)derived from 81%of the total species of the genus incarvillea.Within the genus-level phylogenetic framework,we examined the character evolution of 10 key morphological characters,and inferred the ancestral area and biogeographical history of the genus.Our analyses revealed that the genus incarvillea is monophyletic and originated in Central Asia during mid-Oligocene ca.29.42 Ma.The earliest diverging lineages were subsequently split into theWestern Himalaya and Sino-Himalaya during the early Miocene ca.21.12 Ma.These lineages resulted in five re-circumscribed subgenera(Amphicome,Olgaea,Niedzwedzkia,incarvillea,and Pteroscleris).Moreover,character mapping revealed the ancestral character states of the genus incarvillea(e.g.,suffruticose habit,cylindrical capsule shape,subligneous capsule texture,absence of capsule wing,and loculicidal capsule dehiscence)that are retained at the earliest diverging ancestral nodes across the genus.Our phylogenetic tree of the genus incarvillea differs from previously proposed phylogenies,thereby recommending the placement of the subgenus Niedzwedzkia close to the subgenus incarvillea and maintaining two main divergent lineages.

关键词： Biodiversity hotspots Biogeography incarvillea Molecular phylogeny Phytools Stochastic character mapping

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西藏罗花挥发油GC-MS分析

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分析测试学报 2008年第S1期27卷 70-71页

作者：傅予李普济白央达娃卓玛白冰如丁立生中国科学院成都生物研究所四川成都610041 四川省公安厅刑侦局四川成都610041 西藏自治区食品药品检验所西藏拉萨850000

The chemical constituents of the essential oil from the traditional Tibetan medicine of incarvillea younghusbandii were analyzed by GC-MS.More than 70 peaks were separated and 39 compounds were identified which accoun... 详细信息

关键词： incarvillea younghusbandii essential oil chemical constituent GC-MS

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