| Sequential accumulation of starch and lipid induced by sulfur deficiency in Chlorella and Parachlorella species. | |
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MedLine Citation:
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PMID: 23238344 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The influence of sulfur deficiency on biomass production was analyzed in the four Chlorellaceae species, Chlorella vulgaris, Chlorella sorokiniana, Chlorella lobophora, and Parachlorella kessleri. Culturing under sulfur-deficient conditions promoted transient accumulation of starch followed by a steady increase in lipid storage. Transmission electron microscopy indicated an increase and decrease in starch granules and subsequent enlargement of lipid droplets under sulfur-deficient conditions. Chlorellaceae spp. accumulated 1.5-2.7-fold higher amounts of starch and 1.5-2.4-fold higher amounts of lipid under sulfur-deficient conditions than under sulfur-sufficient conditions. More than 75% of the fatty acids that accumulated in Chlorellaceae spp. under the sulfur-sufficient condition were unsaturated and culturing under sulfur-deficient conditions increased the saturated fatty acid content from 24.3% to 59.7% only in P. kessleri. These results indicate that the sequential accumulation of starch and lipid is a response to the sulfur depletion that commonly occurs in Chlorellaceae spp. |
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Authors:
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Yusuke Mizuno; Atsushi Sato; Koichi Watanabe; Aiko Hirata; Tsuyoshi Takeshita; Shuhei Ota; Norihiro Sato; Vilém Zachleder; Mikio Tsuzuki; Shigeyuki Kawano |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-16 |
Journal Detail:
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Title: Bioresource technology Volume: 129C ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-12-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: - |
Other Details:
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Languages: ENG Pagination: 150-155 Citation Subset: - |
Copyright Information:
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Copyright © 2012 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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