Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions

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	Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions
	Chen, Shengyun ; Wu, Guili ; Chen, Shilong ; Ren, Jiawen ; Qin, Dahe
	2010-08-01
发表期刊	BIOCHEMICAL SYSTEMATICS AND ECOLOGY ; Chen, SY; Wu, GL; Chen, SL; Ren, JW; Qin, DH.Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions,BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2010,38(4):796-805
摘要	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; 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
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/20507
专题	中国科学院西北高原生物研究所
推荐引用方式 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, Chen, SY; Wu, GL; Chen, SL; Ren, JW; Qin, DH.Molecular phylogeny and biogeography of the narrow endemic Coelonema and affinitive Draba (Brassicaceae) based on two DNA regions,BIOCHEMICAL SYSTEMATICS AND ECOLOGY,2010,38(4):796-805,2010.
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.
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 (2010).