Document Detail


UVA-induced reset of hydroxyl radical ultradian rhythm improves temporal lipid production in Chlorella vulgaris.
MedLine Citation:
PMID:  24692289     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We report for the first time that the endogenous, pseudo-steady-state, specific intracellular levels of the hydroxyl radical (si-OH) oscillate in an ultradian fashion (model system: the microalga, Chlorella vulgaris), and also characterize the various rhythm parameters. The ultradian rhythm in the endogenous levels of the si-OH occurred with an approximately 6 h period in the daily cycle of light and darkness. Further, we expected that the rhythm reset to a shorter period could rapidly switch the cellular redox states that could favor lipid accumulation. We reset the endogenous rhythm through entrainment with UVA radiation, and generated two new ultradian rhythms with periods of approximately 2.97 h and 3.8 h in the light phase and dark phase, respectively. The reset increased the window of maximum lipid accumulation from 6 h to 12 h concomitant with the onset of the ultradian rhythms. Further, the saturated fatty acid content increased approximately to 80% of total lipid content, corresponding to the peak maxima of the hydroxyl radical levels in the reset rhythm. © 2014 American Institute of Chemical Engineers Biotechnol. Prog., 2014.
Authors:
Ranjini Balan; G K Suraishkumar
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-4-1
Journal Detail:
Title:  Biotechnology progress     Volume:  -     ISSN:  1520-6033     ISO Abbreviation:  Biotechnol. Prog.     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-4-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8506292     Medline TA:  Biotechnol Prog     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 American Institute of Chemical Engineers (AIChE).
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