Characterisation of DGAT1 and DGAT2 from Jatropha curcas and their functions in storage lipid biosynthesis

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 资源植物与生物技术所级重点实验室

	Characterisation of DGAT1 and DGAT2 from Jatropha curcas and their functions in storage lipid biosynthesis
	Xu, Ronghua 1; Yang, Tianquan 1,2; Wang, Ruling 1; Liu, Aizhong1,3
刊名	FUNCTIONAL PLANT BIOLOGY
	2014
卷号	41 期号:3 页码:321-329
关键词	diacylglycerol acyltransferase fatty acid composition oil content triacylglycerols
ISSN号	1445-4408
通讯作者	Liu,AZ (reprint author),Chinese Acad Sci,Key Lab Trop Forest Ecol,Xishuangbanna Trop Bot Garden,88 Xuefu Rd,Kunming 650223,Peoples R China. ; liuaizhong@mail.kib.ac.cn
英文摘要	Diacylglycerol acyltransferases (DGATs) catalyse the final step of triacylglycerol (TAG) biosynthesis of the Kennedy pathway, and play a critical role during TAG accumulation in developing oleaginous seeds. In this study, the molecular cloning and characterisation of two DGAT genes, JcDGAT1 and JcDGAT2, from jatropha (Jatropha curcas L., a potential biodiesel plant) is presented. Using heterogonous overexpression techniques, both JcDGAT1 and JcDGAT2 were able to restore TAG biosynthesis in a yeast mutant H1246 strain, and enhance the quantity of TAG biosynthesis by 16.6 and 14.3%, respectively, in strain INVSc1. In transgenic tobacco, overexpression of JcDGAT1 and JcDGAT2 resulted in an increase in seed oil content of, respectively, 32.8 and 31.8%. Further, the functional divergence of JcDGAT1 and JcDGAT2 in TAG biosynthesis was demonstrated by comparing the fatty acid compositions in both the transgenic yeast and tobacco systems. In particular, JcDGAT2 incorporated a 2.5-fold higher linoleic acid content into TAG than JcDGAT1 in transgenic yeast and exhibited a significant linoleic acid substrate preference in both yeast and tobacco. This study provides new insights in understanding the molecular mechanisms of DGAT genes underlying the biosynthesis of linoleic acids and TAG in plants.
学科主题	Plant Sciences
类目[WOS]	Plant Sciences
研究领域[WOS]	Plant Sciences
关键词[WOS]	ENCODING DIACYLGLYCEROL ACYLTRANSFERASE ; OIL CONTENT ; ACYL-COA ; SEED OIL ; TRIACYLGLYCEROL BIOSYNTHESIS ; EXPRESSION ; CLONING ; ARABIDOPSIS ; GENE ; ENZYME
收录类别	SCI
资助信息	NSFC [30871548, 31300569];'Hundred Talents Program of the Chinese Academy of Sciences'
语种	英语
WOS记录号	WOS:000337368000012
公开日期	2014-07-28
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/18219]
专题	昆明植物研究所_资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Kunming 650223, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
推荐引用方式 GB/T 7714	Xu, Ronghua,Yang, Tianquan,Wang, Ruling,et al. Characterisation of DGAT1 and DGAT2 from Jatropha curcas and their functions in storage lipid biosynthesis[J]. FUNCTIONAL PLANT BIOLOGY,2014,41(3):321-329.
APA	Xu, Ronghua,Yang, Tianquan,Wang, Ruling,&Liu, Aizhong.(2014).Characterisation of DGAT1 and DGAT2 from Jatropha curcas and their functions in storage lipid biosynthesis.FUNCTIONAL PLANT BIOLOGY,41(3),321-329.
MLA	Xu, Ronghua,et al."Characterisation of DGAT1 and DGAT2 from Jatropha curcas and their functions in storage lipid biosynthesis".FUNCTIONAL PLANT BIOLOGY 41.3(2014):321-329.