Document Detail


Effect of carbon and nitrogen on the cannibalistic behavior of Bacillus subtilis.
MedLine Citation:
PMID:  18463799     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Bacillus subtilis is known to exhibit cannibalism under nutrient limitation to delay sporulation. Cells of B. subtilis in phosphate buffer solution (PBS) demonstrate an oscillatory behavior in cell number due to cannibalism. Since PBS did not contain any nutrients, the effect of carbon and nitrogen sources on the cannibalistic behavior is unclear. In this study, the effect of external carbon and nitrogen on the cannibalistic behavior of B. subtilis is presented. The studies demonstrated that when glucose as a carbon source was introduced into PBS in the absence of any other nutrients, the cannibalistic tendency was delayed. This delay increased with the increase in the amount of glucose present in the PBS. Thus, the cannibalism was observed to be very sensitive to the amount of carbon present in the medium. However, when the medium contained only ammonium sulfate as a nitrogen source and was devoid of any carbon, the effect on cannibalism was minimal. The study, therefore, demonstrated that cannibalism was more sensitive to carbon than nitrogen indicating that the phenomenon of cannibalism may be more dependent on the status of energy in the medium than on nitrogen assimilation.
Authors:
Subir Kumar Nandy; K V Venkatesh
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Publication Detail:
Type:  Journal Article     Date:  2008-05-08
Journal Detail:
Title:  Applied biochemistry and biotechnology     Volume:  151     ISSN:  1559-0291     ISO Abbreviation:  Appl. Biochem. Biotechnol.     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-10-31     Completed Date:  2008-12-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8208561     Medline TA:  Appl Biochem Biotechnol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  424-32     Citation Subset:  IM    
Affiliation:
Department of Chemical Engineering, Indian Institute of Technology, Powai, Mumbai, India.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Ammonium Sulfate / administration & dosage
Bacillus subtilis / drug effects,  physiology*
Carbon / administration & dosage*
Culture Media / pharmacology*
Glucose / administration & dosage
Microbial Viability
Nitrogen / administration & dosage*
Chemical
Reg. No./Substance:
0/Culture Media; 50-99-7/Glucose; 7440-44-0/Carbon; 7727-37-9/Nitrogen; 7783-20-2/Ammonium Sulfate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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