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Analysis of oil synthesis pathway in Cyperus esculentus tubers and identification of oleosin and caleosin genes

文献类型： 外文期刊

作者： Zhu, Youcheng 1 ; Wang, Ying 1 ; Wei, Zunmiao 2 ; Zhang, Xiaokai 1 ; Jiao, Bingyang 1 ; Tian, Yu 1 ; Yan, Fan 1 ; Li, Jingwen 1 ; Liu, Yajing 1 ; Yang, Xuguang 1 ; Zhang, Jinhao 1 ; Wang, Xinyue 1 ; Mu, Zhongsheng 2 ; Wang, Qingyu 1 ;

作者机构： 1.Jilin Univ, Coll Plant Sci, 5333 Xian Rd, Changchun, Peoples R China

2.Jilin Acad Agr Sci, Inst Econ Plants, Gongzhuling 136105, Peoples R China

关键词： Caleosin; Cyperus esculentus; Metabolome; Oleosin; Transcriptome

期刊名称：JOURNAL OF PLANT PHYSIOLOGY （ 影响因子：4.3； 五年影响因子：4.5 ）

ISSN： 0176-1617

年卷期： 2023 年 284 卷

页码：

收录情况： SCI

摘要： The tubers of the widely distributed Cyperus esculentus are rich in oil, and therefore, the plant is considered to have a high utilization value in the vegetable oil industry. Oleosins and caleosins are lipid-associated proteins found in oil bodies of seeds; however oleosins and caleosins genes have not been identified in C. esculentus. In this study, we performed transcriptome sequencing and lipid metabolome analysis of C. esculentus tubers at four developmental stages to obtain the information on their genetic profile, expression trends, and metabolites in oil accumulation pathways. Overall, 120,881 non-redundant unigenes and 255 lipids were detected; 18 genes belonged to the acetyl-CoA carboxylase (ACC), malonyl-CoA:ACP transacylase (MCAT), beta-ketoacyl-ACP synthase (KAS), and fatty acyl-ACP thioesterase (FAT) gene families involved in fatty acid biosynthesis, and 16 genes belonged to the glycerol-3-phosphate acyltransferase (GPAT), diacylglycerol acyltransferase 3 (DGAT3), phos-pholipid:diacylglycerol acyltransferase (PDAT), FAD2, and lysophosphatidic acid acyltransferase (LPAAT) gene families playing important roles in triacylglycerol synthesis. We also identified 9 oleosin-and 21 caleosin-encoding genes in C. esculentus tubers. These results provide detailed information on the C. esculentus tran-scriptional and metabolic profiles, which can be used as reference for the development of strategies to increase oil content in C. esculentus tubers.

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