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Identification of the role of polar glycerolipids in lipid metabolism and their acyl attribution for TAG accumulation in Nannochloropsis oceanica
Meng, Yingying1,2; Cao, Xupeng2; Yao, Changhong2; Xue, Song2; Yang, Qing1
关键词Nannochloropsis Lipidomics Polar Glycerolipids Metabolism Tag Accumulation Nitrogen Starvation
刊名ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
2017-06-01
DOI10.1016/j.algal.2017.03.004
24页:122-129
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Life Sciences & Biomedicine
类目[WOS]Biotechnology & Applied Microbiology
研究领域[WOS]Biotechnology & Applied Microbiology
关键词[WOS]CHROMATOGRAPHY-MASS SPECTROMETRY ; DIATOM FISTULIFERA-SOLARIS ; CHLAMYDOMONAS-REINHARDTII ; EICOSAPENTAENOIC ACID ; TRIACYLGLYCEROL ACCUMULATION ; PHAEODACTYLUM-TRICORNUTUM ; LIQUID-CHROMATOGRAPHY ; NITROGEN DEPRIVATION ; FATTY-ACIDS ; BIOSYNTHESIS
英文摘要Nannochloropsis, an ocean microalgal genus, is a promising resource of biodiesel feedstock because of its capacity for triacylglycerol (TAG) accumulation. Polar glycerolipids have big contribution for TAG accumulation by providing acyl group or diacylglycerol (DAG). Due to the diversities and amount of polar glycerolipids in species, a suitable approach has not been developed well to quantify and qualify, which veils the clarification of how important roles the polar glycerolipids play in microalgal lipid metabolism and TAG accumulation. In this study, a total of 112 polar glycerolipid species, covering eight classes, were identified using UPLC/Q-TRAP plus Orbitrap coupled with quantified using UPLC/Q-TOF. A comprehensive profiling of polar glycerolipid was established to study the polar glycerolipids variations in response to nitrogen deprivation in Nannochloropsis oceanica. Through targeted lipidomics analysis it was proposed that in N. oceanica, phosphatidylcholine (PC) serve as linoleic and gamma-linolenic acyl donors via oleic acyl desaturation, and under nitrogen stress condition PC transfers acyl 16:0 and 18:1 to TAG. The result disclosed PC played import roles for TAG accumulation not only in high plants but also in PC-containing microalgae even PC is not the most extraplastidial lipid. In addition, it was showed that phosphatidylethanolamine (PE) and diacylglyceryl-N-trimethylhomoserine (DGTS) are suppliers of eicosapentaenoic acid (EPA) to other lipids. These new discoveries reveal the diversity of microalgae in acyl metabolism and shed light on the understanding of lipid biosynthesis by stoichiometry. (C) 2017 Published by Elsevier B.V.
语种英语
WOS记录号WOS:000404864600012
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152077
专题中国科学院大连化学物理研究所
作者单位1.Dalian Univ Technol, Sch Life Sci & Biotechnol, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Marine Bioprod Engn Grp, Dalian 116023, Peoples R China
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GB/T 7714
Meng, Yingying,Cao, Xupeng,Yao, Changhong,et al. Identification of the role of polar glycerolipids in lipid metabolism and their acyl attribution for TAG accumulation in Nannochloropsis oceanica[J]. ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,2017,24:122-129.
APA Meng, Yingying,Cao, Xupeng,Yao, Changhong,Xue, Song,&Yang, Qing.(2017).Identification of the role of polar glycerolipids in lipid metabolism and their acyl attribution for TAG accumulation in Nannochloropsis oceanica.ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,24,122-129.
MLA Meng, Yingying,et al."Identification of the role of polar glycerolipids in lipid metabolism and their acyl attribution for TAG accumulation in Nannochloropsis oceanica".ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS 24(2017):122-129.
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