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Metabolic profiles of Nannochloropsis oceanica IMET1 under nitrogen-deficiency stress
Xiao, Yan; Zhang, Jingtao; Cui, Jiatao; Feng, Yingang; Cui, Qiu; Qiu Cui
2013-02-01
发表期刊BIORESOURCE TECHNOLOGY
卷号130期号:1页码:731-738
摘要a b s t r a c tTo understand the mechanism of lipid accumulation and the corresponding metabolic changes of the microalga Nannochloropsis oceanica IMET1, the lipid content, fatty acid composition and metabolic profile were investigated via batch culture under nutrient deficiency and chemostatic culture under nitrate limitation. The results indicated that the triacylglycerol-neutral lipids were significantly accumulated through an acyl-CoA dependent pathway, while the polar lipids were partially converted to triacylglycerol through an acyl-CoA independent pathway. The fatty acid compositions of the polar lipids changed concurrently with the length of time of the nutrient deficiency, while the fatty acid compositions of the neutral lipids remained nearly consistent. The concentrations of several major osmolytes were significantly changed under chemostatic conditions with different nitrogen concentrations, which reflect the membrane property changes caused by the alteration of the polar lipid composition.; To understand the mechanism of lipid accumulation and the corresponding metabolic changes of the microalga Nannochloropsis oceanica IMET1, the lipid content, fatty acid composition and metabolic profile were investigated via batch culture under nutrient deficiency and chemostatic culture under nitrate limitation. The results indicated that the triacylglycerol-neutral lipids were significantly accumulated through an acyl-CoA dependent pathway, while the polar lipids were partially converted to triacylglycerol through an acyl-CoA independent pathway. The fatty acid compositions of the polar lipids changed concurrently with the length of time of the nutrient deficiency, while the fatty acid compositions of the neutral lipids remained nearly consistent. The concentrations of several major osmolytes were significantly changed under chemostatic conditions with different nitrogen concentrations, which reflect the membrane property changes caused by the alteration of the polar lipid composition. (C) 2012 Elsevier Ltd. All rights reserved.
文章类型Article
关键词Nannochloropsis Oceanica Lipid Metabolism Biodiesel Nitrogen Limitation
学科领域代谢物组学
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.biortech.2012.11.116
关键词[WOS]LIPID-COMPOSITION ; PAVLOVA-LUTHERI ; ALGAE ; OIL ; ACCUMULATION ; BIODIESEL ; PHOTOBIOREACTOR ; TRIACYLGLYCEROL ; MICROALGAE ; SALINITY
收录类别SCI
语种英语
WOS研究方向Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS类目Agricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS记录号WOS:000316032300098
引用统计
被引频次:73[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/1461
专题代谢物组学研究组
通讯作者Qiu Cui
作者单位Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Shandong Prov Key Lab Energy Genet, Key Lab Biofuels, Qingdao 266101, Shaodong, Peoples R China
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Xiao, Yan,Zhang, Jingtao,Cui, Jiatao,et al. Metabolic profiles of Nannochloropsis oceanica IMET1 under nitrogen-deficiency stress[J]. BIORESOURCE TECHNOLOGY,2013,130(1):731-738.
APA Xiao, Yan,Zhang, Jingtao,Cui, Jiatao,Feng, Yingang,Cui, Qiu,&Qiu Cui.(2013).Metabolic profiles of Nannochloropsis oceanica IMET1 under nitrogen-deficiency stress.BIORESOURCE TECHNOLOGY,130(1),731-738.
MLA Xiao, Yan,et al."Metabolic profiles of Nannochloropsis oceanica IMET1 under nitrogen-deficiency stress".BIORESOURCE TECHNOLOGY 130.1(2013):731-738.
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