Morphology, growth, biochemical composition and photosynthetic performance of Chlorella vulgaris (Trebouxiophyceae) under low and high nitrogen supplies
Li, Tao; Xu, Jin; Gao, Baoyan; Xiang, Wenzhou; Li, Aifen; Zhang, Chengwu; Li, AF; Zhang, CW (reprint author), Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Guangdong, Peoples R China.
2016
发表期刊ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
卷号16页码:481-491
摘要Storage triacylglycerol accumulated by oleaginous microalgae have been utilized as optimal feedstock for biodiesel production. Nitrogen limitation is one of the most effective approaches in inducing oil accumulation in microalgae. However, the mechanism underlying this process is not well established. The aim of the present study was to determine changes in morphology, growth, biochemical composition, and photosynthetic performance of Chlorella vulgaris JNU13 under low nitrogen supply (LN, 3.5 mM) and high nitrogen supply (HN, 17.6 mM). The results showed that LN repressed cell division and cell weight gain. C. vulgaris under HN showed higher lipid levels compared to those subjected to LN. LN showed a decrease in photosynthetic capacity [relative electron transport rate (rETR), photosynthetic oxygen evolution rate (P-n), and utilization efficiency of light energy (alpha)], ratio of PS I to PS II, dark respiration rate (R-d), and the proportion of z-scheme electron transport pathway. Inversely, LN increased the proportion of the alternative electron transport pathway and non-photochemical quenching (NPQ). The damaged photosystems during limited nitrogen conditions negatively affected lipid accumulation in oleaginous C. vulgaris JNU13. It is therefore essential to maintain a balance between low nitrogen stress and high photosynthetic capacity by regulating the initial nitrogen supply to maximize lipid yield. The results of the present study may be used as a reference for regulating the initial nitrogen supply to enhance oil productivity. (C) 2016 Published by Elsevier B.V.
部门归属[Li, Tao; Xu, Jin; Gao, Baoyan; Li, Aifen; Zhang, Chengwu] Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Guangdong, Peoples R China; [Li, Tao; Xiang, Wenzhou] Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Key Lab Marine Mat Med LMMM GD, CAS Key Lab Trop Marine Bioresources & Ecol LMB C, Guangzhou 510301, Guangdong, Peoples R China; [Xu, Jin] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China ; LMB
关键词Chlorella Vulgaris Initial Nitrogen Supply Biochemical Composition Lipids Yield Photosynthetic Performance Electrons Transport Pathway
学科领域Biotechnology & Applied Microbiology
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15415
专题中科院海洋生物资源可持续利用重点实验室
通讯作者Li, AF; Zhang, CW (reprint author), Jinan Univ, Inst Hydrobiol, Guangzhou 510632, Guangdong, Peoples R China.
推荐引用方式
GB/T 7714
Li, Tao,Xu, Jin,Gao, Baoyan,et al. Morphology, growth, biochemical composition and photosynthetic performance of Chlorella vulgaris (Trebouxiophyceae) under low and high nitrogen supplies[J]. ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,2016,16:481-491.
APA Li, Tao.,Xu, Jin.,Gao, Baoyan.,Xiang, Wenzhou.,Li, Aifen.,...&Zhang, CW .(2016).Morphology, growth, biochemical composition and photosynthetic performance of Chlorella vulgaris (Trebouxiophyceae) under low and high nitrogen supplies.ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS,16,481-491.
MLA Li, Tao,et al."Morphology, growth, biochemical composition and photosynthetic performance of Chlorella vulgaris (Trebouxiophyceae) under low and high nitrogen supplies".ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS 16(2016):481-491.
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