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Applied and Environmental Microbiology, January 2007, p. 341-343, Vol. 73, No. 1
0099-2240/07/$08.00+0     doi:10.1128/AEM.01971-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Conjugative Transfer Facilitates Stable Maintenance of IncP-1 Plasmid pKJK5 in Escherichia coli Cells Colonizing the Gastrointestinal Tract of the Germfree Rat{triangledown}

Martin Iain Bahl,1 Lars Hestbjerg Hansen,1 Tine Rask Licht,2 and Søren J. Sørensen1*

Department of Microbiology, University of Copenhagen, Sølvgade 83H, DK-1307 Copenhagen K, Denmark,1 Department of Microbiological Food Safety, Danish Institute for Food and Veterinary Research, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark2

Received 18 August 2006/ Accepted 26 October 2006

Quantitative determination of IncP-1 plasmid loss from Escherichia coli cells colonizing the gastrointestinal tracts of germfree rats was achieved by flow cytometry. Results show that the plasmid's ability to conjugate counteracts plasmid loss and is thus an important mechanism for the stable maintenance of IncP-1 plasmids within the gastrointestinal environment.

* Corresponding author. Mailing address: Department of Microbiology, University of Copenhagen, Sølvgade 83H, DK-1307 Copenhagen K, Denmark. Phone: 45 35 32 20 53. Fax: 45 35 32 20 40. E-mail: sjs{at}bi.ku.dk.

{triangledown} Published ahead of print on 3 November 2006.

Applied and Environmental Microbiology, January 2007, p. 341-343, Vol. 73, No. 1
0099-2240/07/$08.00+0     doi:10.1128/AEM.01971-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Norman, A., Hansen, L. H., Sorensen, S. J. (2009). Conjugative plasmids: vessels of the communal gene pool. Phil Trans R Soc B 364: 2275-2289 [Abstract] [Full Text]  
  • Feld, L., Schjorring, S., Hammer, K., Licht, T. R., Danielsen, M., Krogfelt, K., Wilcks, A. (2008). Selective pressure affects transfer and establishment of a Lactobacillus plantarum resistance plasmid in the gastrointestinal environment. J Antimicrob Chemother 61: 845-852 [Abstract] [Full Text]  


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