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学科主题: 物理化学
题名: Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions
作者: Yao, Chang-Hong1, 2;  Ai, Jiang-Ning1;  Cao, Xu-Peng1;  Xue, Song1
通讯作者: 薛松
关键词: Tetraselmis subcordiformis ;  Starch ;  Phosphorus ;  Initial cell density ;  Productivity ;  Recovery
刊名: APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
发表日期: 2013-07-01
DOI: 10.1007/s00253-013-4983-x
卷: 97, 期:13, 页:6099-6110
收录类别: SCI
文章类型: Article
部门归属: 18
项目归属: 1812
产权排名: 1,1
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Biotechnology & Applied Microbiology
研究领域[WOS]: Biotechnology & Applied Microbiology
英文摘要: Microalgal starch is a potential feedstock for bio-fuel production. Nutrient stress is widely used to stimulate starch accumulation in microalgae. Cell growth and starch accumulation in the marine green microalga Tetraselmis subcordiformis were evaluated under extracellular phosphorus deprivation with initial cell densities (ICD) of 1.5, 3.0, 6.0, and 9.0x10(6) cells mL(-1). The intracellular stored phosphorus supported cell growth when extracellular phosphorus was absent. The maximum starch content of 44.1 % was achieved in the lowest ICD culture, while the maximum biomass productivity of 0.71 g L-1 day(-1), starch concentration of 1.6 g L-1, and starch productivity of 0.30 g L-1 day(-1) were all obtained in the culture with the ICD of 3.0x 10(6) cells mL(-1). Appropriate ICD could be used to regulate the intracellular phosphorus concentration and maintain adequate photosynthetic activity to achieve the highest starch productivity, along with biomass and starch concentration. The recovery of phosphorus-deprived T. subcordiformis in medium containing 0.5, 1.0, or 6.0 mM KH2PO4 was also tested. Cell growth and starch accumulation ability could be recovered completely. A phosphorus pool in T. subcordiformis was shown to manipulate its metabolic activity under different environmental phosphorus availability. Though lower starch productivity and starch content were achieved under phosphorus deprivation compared with nitrogen-or sulfur-deprived conditions, the higher biomass and starch concentration make T. subcordiformis a good candidate for biomass and starch production under extracellular phosphorus deprivation.
关键词[WOS]: ARTHROSPIRA SPIRULINA PLATENSIS ;  CHLAMYDOMONAS-REINHARDTII ;  NUTRIENT LIMITATION ;  BIOMASS COMPOSITION ;  CARBON ALLOCATION ;  OIL ACCUMULATION ;  LIGHT-INTENSITY ;  PHOSPHATE ;  STRESS ;  PHOTOSYNTHESIS
语种: 英语
WOS记录号: WOS:000321121500039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117611
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Marine Bioprod Engn Grp, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Yao, Chang-Hong,Ai, Jiang-Ning,Cao, Xu-Peng,et al. Characterization of cell growth and starch production in the marine green microalga Tetraselmis subcordiformis under extracellular phosphorus-deprived and sequentially phosphorus-replete conditions[J]. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY,2013,97(13):6099-6110.
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