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Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions
Chen, Shengyun1,2,3,4; Wu, Guili5; Chen, Shilong1; Ren, Jiawen2,3; Qin, Dahe2,3
2010-08-01
Source PublicationBIOCHEMICAL SYSTEMATICS AND ECOLOGY
ISSN0305-1978
Volume38Issue:4Pages:796-805
SubtypeArticle
AbstractTo clarify the relationship between two genera Draba and the narrow genus Coelonema endemic to the QilianMountains of the northeastern Qinghai-Tibet Plateau phylogenetic analyses were conducted using nuclear ribosomal DNA ITS and the chloroplast DNA trnL from Coelonema draboides and 30 species of Draba representing eight sections including 25 species of Chinese Draba seven of which were endemic to the study region The results unambiguously support several previously published proposals to unite Coelonema with Draba and accommodate C draboides in the latter genus on the basis of morphological re-examination Our molecular data presented here also provide evidence that these two genera should be combined as a monophyletic group with high support In addition it is estimated that Draba may have originated about 1 36-2 71 Mya with C draboides diverging from Draba about 0 15-0 31 Mya based on the molecular calibration of ITS datasets The assumed speciation and rapid expansion of these two genera is likely to have occurred in the eastern edge of the QilianMountains area according to molecular phylogeny and estimated divergence times which correspond well with the known geological and paleobotanical histories of the Qinghai-Tibet Plateau (C) 2010 Elsevier Ltd All rights reserved; To clarify the relationship between two genera Draba and the narrow genus Coelonema endemic to the QilianMountains of the northeastern Qinghai-Tibet Plateau phylogenetic analyses were conducted using nuclear ribosomal DNA ITS and the chloroplast DNA trnL from Coelonema draboides and 30 species of Draba representing eight sections including 25 species of Chinese Draba seven of which were endemic to the study region The results unambiguously support several previously published proposals to unite Coelonema with Draba and accommodate C draboides in the latter genus on the basis of morphological re-examination Our molecular data presented here also provide evidence that these two genera should be combined as a monophyletic group with high support In addition it is estimated that Draba may have originated about 1 36-2 71 Mya with C draboides diverging from Draba about 0 15-0 31 Mya based on the molecular calibration of ITS datasets The assumed speciation and rapid expansion of these two genera is likely to have occurred in the eastern edge of the QilianMountains area according to molecular phylogeny and estimated divergence times which correspond well with the known geological and paleobotanical histories of the Qinghai-Tibet Plateau (C) 2010 Elsevier Ltd All rights reserved
KeywordBiogeography Coelonema Draba Its Phylogeny Trnl
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordQINGHAI-TIBET PLATEAU ; METAGENTIANA-STRIATA GENTIANACEAE ; CHLOROPLAST DNA ; SEQUENCE-ANALYSIS ; ASTERACEAE ; EVOLUTION ; COMPLEX ; PHYLOGEOGRAPHY ; ORIGIN ; TREES
Indexed BySCI
Language英语
WOS Research AreaBiochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS SubjectBiochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
WOS IDWOS:000284565800044
Citation statistics
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/1662
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, NW Inst Plateau Biol, Xining 810001, Qinghai, Peoples R China
2.Chinese Acad Sci, State Key Lab Cryospher Sci Cold & Arid Reg Envir, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Engn Res Inst, Lanzhou 730000, Peoples R China
4.Chinese Acad Sci, Qilian Shan Stn Glaciol & Ecol Environm, Yumen 735200, Peoples R China
5.Lanzhou Univ, Key Lab Arid & Grassland Ecol, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Chen, Shengyun,Wu, Guili,Chen, Shilong,et al. Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions[J]. BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2010,38(4):796-805.
APA Chen, Shengyun,Wu, Guili,Chen, Shilong,Ren, Jiawen,&Qin, Dahe.(2010).Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions.BIOCHEMICAL SYSTEMATICS AND ECOLOGY,38(4),796-805.
MLA Chen, Shengyun,et al."Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions".BIOCHEMICAL SYSTEMATICS AND ECOLOGY 38.4(2010):796-805.
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