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Journal of Clinical Microbiology, October 1999, p. 3167-3170, Vol. 37, No. 10
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Development of rRNA-Based PCR Assays for Identification of Burkholderia cepacia Complex Isolates Recovered from Cystic Fibrosis Patients

John J. LiPuma,1,* Betty Jo Dulaney,1 Jennifer D. McMenamin,1 Paul W. Whitby,2 Terrence L. Stull,2 Tom Coenye,3 and Peter Vandamme3

Departments of Pediatrics and Microbiology/Immunology, MCP Hahnemann University and St. Christopher's Hospital for Children, Philadelphia, Pennsylvania1; Departments of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma2; and Laboratorium voor Microbiologie, Universiteit Gent, Ghent, Belgium3

Received 9 April 1999/Returned for modification 16 June 1999/Accepted 14 July 1999

PCR assays targeting rRNA genes were developed to identify species (genomovars) within the Burkholderia cepacia complex. Each assay was tested with 177 bacterial isolates that also underwent taxonomic analysis by whole-cell protein profile. These isolates were from clinical and environmental sources and included 107 B. cepacia complex strains, 23 Burkholderia gladioli strains, 20 Ralstonia pickettii strains, 10 Pseudomonas aeruginosa strains, 8 Stenotrophomonas maltophilia strains, and 9 isolates belonging to nine other species. The sensitivity and specificity of the 16S rRNA-based assay for Burkholderia multivorans (genomovar II) were 100 and 99%, respectively; for Burkholderia vietnamiensis (genomovar V), sensitivity and specificity were 87 and 92%, respectively. An assay based on 16S and 23S rRNA gene analysis of B. cepacia ATCC 25416 (genomovar I) was useful in identifying genomovars I, III, and IV as a group (sensitivity, 100%, and specificity, 99%). Another assay, designed to be specific at the genus level, identified all but one of the Burkholderia and Ralstonia isolates tested (sensitivity, 99%, and specificity, 96%). The combined use of these assays offers a significant improvement over previously published PCR assays for B. cepacia.

* Corresponding author. Mailing address: MCP Hahnemann University, Department of Microbiology, 2900 Queen Lane, Philadelphia, PA 19129. Phone: (215) 842-6688. Fax: (215) 848-2271. E-mail: lipuma{at}mcphu.edu.

Journal of Clinical Microbiology, October 1999, p. 3167-3170, Vol. 37, No. 10
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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