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 Previous Article

Journal of Bacteriology, May 2004, p. 2906-2908, Vol. 186, No. 9
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.9.2906-2908.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Correlation between Osmolarity and Luminescence of Symbiotic Vibrio fischeri Strain ES114

Eric V. Stabb,* Melissa S. Butler, and Dawn M. Adin

Department of Microbiology, University of Georgia, Athens, Georgia 30602

Received 7 November 2003/ Accepted 23 January 2004

Vibrio fischeri isolates from Euprymna scolopes are dim in culture but bright in the host. We found the luminescence of V. fischeri to be correlated with external osmolarity both in culture and in this symbiosis. Luminescence enhancement by osmolarity was independent of the lux promoter and unaffected by autoinducers or the level of lux expression, but the addition of an aldehyde substrate for luciferase raised the luminescence of cells grown at high and low osmolarities to the same high level. V. fischeri culture media have lower osmolarities than are typical in seawater or in cephalopods, partially accounting for the bacterium's low light output in culture.

* Corresponding author. Mailing address: University of Georgia, Department of Microbiology, 828 Biological Sciences, Athens, GA 30602. Phone: (706) 542-2414. Fax: (706) 542-2674. E-mail: estabb{at}uga.edu.

Journal of Bacteriology, May 2004, p. 2906-2908, Vol. 186, No. 9
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.9.2906-2908.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

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  • Hussa, E. A., O'Shea, T. M., Darnell, C. L., Ruby, E. G., Visick, K. L. (2007). Two-Component Response Regulators of Vibrio fischeri: Identification, Mutagenesis, and Characterization. J. Bacteriol. 189: 5825-5838 [Abstract] [Full Text]  
  • O'Shea, T. M., DeLoney-Marino, C. R., Shibata, S., Aizawa, S.-I., Wolfe, A. J., Visick, K. L. (2005). Magnesium Promotes Flagellation of Vibrio fischeri. J. Bacteriol. 187: 2058-2065 [Abstract] [Full Text]  


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