Document Detail

Growth of Vibrio cholerae O1 in red tide waters off California.
MedLine Citation:
PMID:  14602656     Owner:  NLM     Status:  MEDLINE    
Vibrio cholerae serotype O1 is autochthonous to estuarine and coastal waters. However, its population dynamics in such environments are not well understood. We tested the proliferation of V. cholerae N16961 during a Lingulodinium polyedrum bloom, as well as other seawater conditions. Microcosms containing 100-kDa-filtered seawater were inoculated with V. cholerae or the 0.6- micro m-pore-size filterable fraction of seawater assemblages. These cultures were diluted 10-fold with fresh 100-kDa-filtered seawater every 48 h for four cycles. Growth rates ranged from 0.3 to 14.3 day(-1) (4.2 day(-1) +/- 3.9) for V. cholerae and 0.1 to 9.7 day(-1) (2.2 +/- 2.8 day(-1)) for bacterial assemblage. Our results suggest that dissolved organic matter during intense phytoplankton blooms has the potential to support explosive growth of V. cholerae in seawater. Under the conditions tested, free-living V. cholerae was able to reach concentrations per milliliter that were up to 3 orders of magnitude higher than the known minimum infectious dose (10(4) cell ml(-1)) and remained viable under many conditions. If applicable to the complex conditions in marine ecosystems, our results suggest an important role of the growth of free-living V. cholerae in disease propagation and prevention during phytoplankton blooms.
Rosa R Mouriño-Pérez; Alexandra Z Worden; Farooq Azam
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Applied and environmental microbiology     Volume:  69     ISSN:  0099-2240     ISO Abbreviation:  Appl. Environ. Microbiol.     Publication Date:  2003 Nov 
Date Detail:
Created Date:  2003-11-06     Completed Date:  2004-02-20     Revised Date:  2013-06-09    
Medline Journal Info:
Nlm Unique ID:  7605801     Medline TA:  Appl Environ Microbiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6923-31     Citation Subset:  IM    
Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0202, USA.
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MeSH Terms
Colony Count, Microbial
Culture Media
Dinoflagellida / growth & development*
Seawater / microbiology*
Vibrio cholerae O1 / growth & development*
Grant Support
Reg. No./Substance:
0/Culture Media

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