Distribution of Quorum-Sensing Genes in the Burkholderia cepacia Complex

The distribution of quorum-sensing genes among strains from seven genomovars of the Burkholderia cepacia complex was examined by PCR. cepR and cepI were amplified from B. cepacia genomovars I and III, B. stabilis, and B. vietnamiensis. cepR was also amplified from B. multivorans and B. cepacia genomovar VI. bviIR were amplified from B. vietnamiensis. All genomovars produced N-octanoyl-l-homoserine lactone and N-hexanoyl-l-homoserine lactone. B. vietnamiensis and B. cepacia genomovar VII produced additional N-acyl-l-homoserine lactones.