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Journal of Bacteriology, February 2002, p. 1187-1191, Vol. 184, No. 4
0021-9193/01/$04.00+0     DOI: 10.1128/jb.184.4.1187-1191.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Quorum-Sensing Signals and Quorum-Sensing Genes in Burkholderia vietnamiensis

Barbara-Ann Conway{dagger}, and E. P. Greenberg*

Department of Microbiology, University of Iowa, Iowa City, Iowa 52242

Received 27 July 2001/ Accepted 14 November 2001

Acyl-homoserine lactone (acyl-HSL) quorum sensing is common to many Proteobacteria including a clinical isolate of Burkholderia cepacia. The B. cepacia isolate produces low levels of octanoyl-HSL. We have examined an environmental isolate of Burkholderia vietnamiensis. This isolate produced several acyl-HSLs. The most abundant species was decanoyl-HSL. Decanoyl-HSL in B. vietnamiensis cultures reached concentrations in excess of 20 µM. We isolated a B. vietnamiensis DNA fragment containing a gene for the synthesis of decanoyl-HSL (bviI) and an open reading frame that codes for a putative signal receptor (bviR). A B. vietnamiensis bviI mutant did not produce detectable levels of decanoyl-HSL.

* Corresponding author. Mailing address: Department of Microbiology, University of Iowa, Iowa City, IA 52242. Phone: (319) 335-7775. Fax: (319) 335-7949. E-mail: epgreen{at}blue.weeg.uiowa.edu.

{dagger} Present address: Division of Infectious and Immunological Diseases, Department of Pediatrics, and the Canadian Bacterial Diseases Network, University of British Columbia, Vancouver, British Columbia, Canada V5Z 4H4.

Journal of Bacteriology, February 2002, p. 1187-1191, Vol. 184, No. 4
0021-9193/01/$04.00+0     DOI: 10.1128/jb.184.4.1187-1191.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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