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Appl Environ Microbiol. 1989 August; 55(8): 1860-1864

Plasmid expression and maintenance during long-term starvation-survival of bacteria in well water.

B A Caldwell, C Ye, R P Griffiths, C L Moyer and R Y Morita

Department of Microbiology, College of Science, Oregon State University, Corvallis 97331-3804.

ABSTRACT

Strains of enteric bacteria and pseudomonads containing plasmid R388::Tnl721 (Tpr, Tcr) or pRO101 (Hgr, Tcr) were starved for over 250 days in sterile well water to evaluate effects of starvation-survival on plasmid expression and maintenance. Viable populations dropped to between approximately 0.1 and 1% of the initial populations. Escherichia coli(pRO101) and Pseudomonas cepacia(pRO101) lost both viability and plasmid expression at a lower rate than strains containing R388::Tnl721. Three patterns of host-plasmid interaction were detected: (i) no apparent loss of plasmid expression, (ii) loss of plasmid expression on initial recovery with subsequent expression upon resuscitation, and (iii) loss of capability to produce functional plasmid resistance.

Appl Environ Microbiol. 1989 August; 55(8): 1860-1864




This article has been cited by other articles:

  • Bogosian, G., Morris, P. J. L., O'Neil, J. P. (1998). A Mixed Culture Recovery Method Indicates that Enteric Bacteria Do Not Enter the Viable but Nonculturable State. Appl. Environ. Microbiol. 64: 1736-1742 [Abstract] [Full Text]  


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