Oil Biosynthesis in Underground Oil-Rich Storage Vegetative Tissue: Comparison of Cyperus esculentus Tuber with Oil Seeds and Fruits

doi:10.1093/pcp/pcw165

CORC > 植物研究所 > 中国科学院植物研究所 > 中科院北方资源植物重点实验室

	Oil Biosynthesis in Underground Oil-Rich Storage Vegetative Tissue: Comparison of Cyperus esculentus Tuber with Oil Seeds and Fruits
	Yang, Zhenle; Ji, Hongying; Liu, Dantong
刊名	PLANT AND CELL PHYSIOLOGY
	2016
卷号	57 期号:12
关键词	Biosynthesis Cyperus esculentus Expression pattern Fatty acid Metabolism Oil Transcript level Tuber
ISSN号	0032-0781
DOI	10.1093/pcp/pcw165
文献子类	Article
英文摘要	Cyperus esculentus is unique in that it can accumulate rich oil in its tubers. However, the underlying mechanism of tuber oil biosynthesis is still unclear. Our transcriptional analyses of the pathways from pyruvate production up to triacylglycerol (TAG) accumulation in tubers revealed many distinct species-specific lipid expression patterns from oil seeds and fruits, indicating that in C. esculentus tuber: (i) carbon flux from sucrose toward plastid pyruvate could be produced mostly through the cytosolic glycolytic pathway; (ii) acetyl-CoA synthetase might be an important contributor to acetyl-CoA formation for plastid fatty acid biosynthesis; (iii) the expression pattern for stearoyl-ACP desaturase was associated with high oleic acid composition; (iv) it was most likely that endoplasmic reticulum (ER)-associated acyl-CoA synthetase played a significant role in the export of fatty acids between the plastid and ER; (v) lipid phosphate phosphatase (LPP)-d was most probably related to the formation of the diacylglycerol (DAG) pool in the Kennedy pathway; and (vi) diacylglyceroltransacylase 2 (DGAT2) and phospholipid: diacylglycerolacyltransferase 1 (PDAT1) might play crucial roles in tuber oil biosynthesis. In contrast to oil-rich fruits, there existed many oleosins, caleosins and steroleosins with very high transcripts in tubers. Surprisingly, only a single ortholog of WRINKLED1 (WRI1)-like transcription factor was identified and it was poorly expressed during tuber development. Our study not only provides insights into lipid metabolism in tuber tissues, but also broadens our understanding of TAG synthesis in oil plants. Such knowledge is of significance in exploiting this oil-rich species and manipulating other non-seed tissues to enhance storage oil production.
学科主题	Plant Sciences ; Cell Biology
电子版国际标准刊号	1471-9053
出版地	OXFORD
WOS关键词	FATTY-ACID BIOSYNTHESIS ; PROTEIN DESATURASE GENE ; COENZYME-A SYNTHETASE ; CHAIN ACYL-COENZYME ; DIACYLGLYCEROL ACYLTRANSFERASE ; ENDOPLASMIC-RETICULUM ; YELLOW NUTSEDGE ; TRIACYLGLYCEROL BIOSYNTHESIS ; COMPARATIVE TRANSCRIPTOME ; DEVELOPING EMBRYOS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000393159600007
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31371692] ; Beijing Natural Science FoundationBeijing Natural Science Foundation [5151001]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24601]
专题	中科院北方资源植物重点实验室
作者单位	Chinese Acad Sci, Key Lab Plant Resources, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yang, Zhenle,Ji, Hongying,Liu, Dantong. Oil Biosynthesis in Underground Oil-Rich Storage Vegetative Tissue: Comparison of Cyperus esculentus Tuber with Oil Seeds and Fruits[J]. PLANT AND CELL PHYSIOLOGY,2016,57(12).
APA	Yang, Zhenle,Ji, Hongying,&Liu, Dantong.(2016).Oil Biosynthesis in Underground Oil-Rich Storage Vegetative Tissue: Comparison of Cyperus esculentus Tuber with Oil Seeds and Fruits.PLANT AND CELL PHYSIOLOGY,57(12).
MLA	Yang, Zhenle,et al."Oil Biosynthesis in Underground Oil-Rich Storage Vegetative Tissue: Comparison of Cyperus esculentus Tuber with Oil Seeds and Fruits".PLANT AND CELL PHYSIOLOGY 57.12(2016).