干旱区生态环境知识资源中心(Arid): Transcriptomic comparison to identify rapidly evolving genes in Braya humilis

Arid

DOI	10.3724/SP.J.1226.2018.00428
	Transcriptomic comparison to identify rapidly evolving genes in Braya humilis
	Wei, YuMing; Ma, XiaoFei; Zhao, PengShan
通讯作者	Zhao, PS
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2018
卷号	10 期号:5 页码:428-435
英文摘要	The Brassicaceae species Braya humilis shows broad adaptation to different climatic zones and latitudes. However, the molecular adaptation mechanism of B. humilis is poorly understood. In China, B. humilis is mainly distributed on the Qinghai-Tibetan Plateau (QTP) and in the adjacent arid region. Previous transcriptome analysis of B. humilis has revealed that 39 salt and osmotic stress response genes are subjected to purifying selection during its speciation. To further explore the adaptation mechanism of B. humilis to an arid environment, OrthoMCL program was employed in this study and 6,268 pairs of orthologous gene pairs with high confidence were obtained between B. humilis and Arabidopsis thaliana. A comparative evolutionary analysis based on nonsynonymous to synonymous substitution ratio (Ka/Ks) was then conducted. There were 64 pairs exhibiting a Ka/Ks ratio more than 0.5 and among which, three instrumental candidate genes, T2_20487, T2_22576, and T2_13757, were identified with strong selection signatures (Ka/Ks > 1). The corresponding A. thaliana orthologs are double-stranded RNA-binding domain protein, MADS-box family protein, and NADH-dehydrogenase subunit 6, which is encoded by mitochondria genome. This report not only demonstrates the adaptation contribution of fast evolving nuclear genes, but also highlights the potential adaptive value of mitochondria gene to the speciation and adaptation of B. humilis toward the extreme environment in an arid region.
英文关键词	Braya humilis positive selection Ka/Ks mitochondria gene variation NADH-dehydrogenase subunit 6
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000457528800008
WOS关键词	PLANT-MITOCHONDRIA ; NATURAL VARIATION ; CANDIDATE GENES ; ARABIDOPSIS ; EXPRESSION ; NUCLEAR ; DROUGHT ; ADAPTATION ; SELECTION ; REVEALS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333276
作者单位	[Wei, YuMing] Gansu Acad Agr Sci, Anim Husb Pasture & Green Agr Inst, Lanzhou 730070, Gansu, Peoples R China; [Ma, XiaoFei; Zhao, PengShan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Stress Physiol & Ecol Cold & Arid Reg, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wei, YuMing,Ma, XiaoFei,Zhao, PengShan. Transcriptomic comparison to identify rapidly evolving genes in Braya humilis[J]. 中国科学院西北生态环境资源研究院,2018,10(5):428-435.
APA	Wei, YuMing,Ma, XiaoFei,&Zhao, PengShan.(2018).Transcriptomic comparison to identify rapidly evolving genes in Braya humilis.SCIENCES IN COLD AND ARID REGIONS,10(5),428-435.
MLA	Wei, YuMing,et al."Transcriptomic comparison to identify rapidly evolving genes in Braya humilis".SCIENCES IN COLD AND ARID REGIONS 10.5(2018):428-435.