Document Detail

Unusual adaptive, cross protection responses and growth phase resistance against peroxide killing in a bacterial shrimp pathogen, Vibrio harveyi.
MedLine Citation:
PMID:  11410358     Owner:  NLM     Status:  MEDLINE    
Oxidant induced protection against peroxide killing was investigated in a prawn bacterial pathogen, Vibrio harveyi. Exposure to 250 microM H(2)O(2) induced adaptive protection against subsequent exposure to killing concentrations of H(2)O(2). In addition, 200 microM t-butyl hydroperoxide (tBOOH) induced cross protection to H(2)O(2) killing. On the other hand, peroxide pretreatment did not induce protection against tBOOH killing. Peroxide induced adaptive and cross protection responses required new protein synthesis and were abolished by addition of a protein synthesis inhibitor. Pretreatments of V. harveyi with 250 microM H(2)O(2) and 200 microM tBOOH induced an increase in peroxide scavenging enzymes, catalase and alkyl hydroperoxide reductase subunit C. In addition, stationary phase cells of V. harveyi were more resistant to H(2)O(2) and iodoacetamide killing but highly susceptible to tBOOH killing compared to exponential phase cells. Many aspects of the oxidative stress response of V. harveyi are different from those of other bacteria and these factors may be important for bacterial survival in the environment and during interactions with host shrimp.
P Vattanaviboon; S Mongkolsuk
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  FEMS microbiology letters     Volume:  200     ISSN:  0378-1097     ISO Abbreviation:  FEMS Microbiol. Lett.     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-06-18     Completed Date:  2001-08-02     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7705721     Medline TA:  FEMS Microbiol Lett     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  111-6     Citation Subset:  IM    
Laboratory of Biotechnology, Chulabhorn Research Institute, Lak Si, Bangkok, Thailand.
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MeSH Terms
Adaptation, Biological*
Bacterial Proteins*
Catalase / biosynthesis
Decapoda (Crustacea) / microbiology*
Drug Resistance
Enzyme Induction
Hydrogen Peroxide / toxicity*
Oxidants / toxicity
Oxidative Stress
Peroxidases / biosynthesis
Vibrio / drug effects*
Vibrio Infections / veterinary
Reg. No./Substance:
0/Bacterial Proteins; 0/Oxidants; 7722-84-1/Hydrogen Peroxide; EC 1.11.1.-/Peroxidases; EC; EC; EC protein, Bacillus subtilis

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

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