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Physiological responses of freshwater oleaginous microalgae Desmodesmus sp NMX451 under nitrogen deficiency and alkaline pH-induced lipid accumulation
Xia, Ling1,2; Yang, Haijian1,2; He, Qiaoning1,2; Hu, Chunxiang1; Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
2015-04-01
Source PublicationJOURNAL OF APPLIED PHYCOLOGY
ISSN0921-8971
Volume27Issue:2Pages:649-659
AbstractMany microalgae are reported to accumulate TAG under high concentrations of bicarbonate and nitrogen deficiency, but their physiological responses remain unknown and the associated applied technology is rarely explored. We found that single high concentration of bicarbonate did not enhance lipid content, except when combined with nitrogen limitation in Desmodesmus sp. NMX451, and the lipid contents obtained were independent from nitrogen limitation and alkalinity stress. Further analysis showed that adding bicarbonate not only retarded the cell cycle, repressed starch accumulation but also promoted polar lipid content. Nitrogen limitation meantime caused protein and chlorophyll degradation with a corresponding increase in total lipid content. Following the aforementioned insights, combined cultivation was performed at an outdoor 5 L scale, and higher biomass and lipid productivities were obtained. These results suggest that bicarbonate can be used as a "trigger" for rapid lipid accumulation in microalgae during nitrogen depletion, and this is an effective new strategy for the cultivation of oleaginous microalgae.
SubtypeArticle
KeywordDesmodesmus Sp Nmx451 Nitrogen Deficiency Bicarbonate Addition Oil Accumulation Microalgae Cultivation
Department[Xia, Ling ; Yang, Haijian ; He, Qiaoning ; Hu, Chunxiang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China ; [Xia, Ling ; Yang, Haijian ; He, Qiaoning] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
DOI10.1007/s10811-014-0371-x
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS SubjectBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS KeywordDIATOM PHAEODACTYLUM-TRICORNUTUM ; CHLORELLA SP CHLOROPHYTA ; CARBON-DIOXIDE LEVELS ; TRIACYLGLYCEROL ACCUMULATION ; CHLAMYDOMONAS-REINHARDTII ; INORGANIC CARBON ; DIFFERENT TEMPERATURE ; BAG PHOTOBIOREACTORS ; TETRASELMIS-SUECICA ; OIL ACCUMULATION
WOS IDWOS:000352446200003
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/25763
Collection藻类生物学及应用研究中心
Corresponding AuthorHu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xia, Ling,Yang, Haijian,He, Qiaoning,et al. Physiological responses of freshwater oleaginous microalgae Desmodesmus sp NMX451 under nitrogen deficiency and alkaline pH-induced lipid accumulation[J]. JOURNAL OF APPLIED PHYCOLOGY,2015,27(2):649-659.
APA Xia, Ling,Yang, Haijian,He, Qiaoning,Hu, Chunxiang,&Hu, CX .(2015).Physiological responses of freshwater oleaginous microalgae Desmodesmus sp NMX451 under nitrogen deficiency and alkaline pH-induced lipid accumulation.JOURNAL OF APPLIED PHYCOLOGY,27(2),649-659.
MLA Xia, Ling,et al."Physiological responses of freshwater oleaginous microalgae Desmodesmus sp NMX451 under nitrogen deficiency and alkaline pH-induced lipid accumulation".JOURNAL OF APPLIED PHYCOLOGY 27.2(2015):649-659.
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