Effects of microcosm salinity and organic substrate concentration on production of Vibrio cholerae enterotoxin.

Applied and Environmental Microbiology
M L Tamplin, Rita R Colwell

Abstract

The effects of aquatic processes on production of cholera toxin by Vibrio cholerae were studied with seawater microcosms. Several salinity and organic nutrient concentrations were employed. At 10 g of organic nutrient per liter of seawater, toxin production increased as the salinity was increased. At lower organic nutrient concentrations, toxin production was markedly enhanced when the salinity was 20 and 25%. Toxin concentration increased with salinity, independent of cell concentration and toxin stability. From the results obtained in this study, it is concluded that physical and chemical parameters of the aquatic environment affect not only the physiological state of V. cholerae, but also its potential pathogenicity.

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Citations

Dec 15, 1994·Annals of the New York Academy of Sciences·R R Colwell, A Huq
Sep 28, 2007·Analytical and Bioanalytical Chemistry·Soohyoun Ahn, Richard A Durst
Sep 1, 1994·World Journal of Microbiology & Biotechnology·J A HasanR R Colwell
Oct 9, 2003·Applied and Environmental Microbiology·Kathryn J PflughoeftPaula I Watnick
Oct 5, 2002·Clinical Microbiology Reviews·Erin K LippRita R Colwell
Sep 24, 2002·Cadernos de saúde pública·Joseli Maria da Rocha NogueiraErnesto Hofer
Sep 1, 1988·Journal of Clinical Microbiology·L B AdamsR J Siebeling
Dec 1, 1987·Applied and Environmental Microbiology·P R BraytonR R Colwell
Sep 1, 1992·Applied and Environmental Microbiology·V E Coyne, L al-Harthi
Jun 1, 1990·Applied and Environmental Microbiology·M L TamplinR R Colwell
Jul 1, 1987·Applied and Environmental Microbiology·P M MunroF M Laumond
Aug 1, 1989·Applied and Environmental Microbiology·J Pace, T J Chai

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