This Article Full Text Full Text (PDF) Other Versions of this Article: JCM.01231-06v1 44/11/4125    most recent Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Reprints and Permissions Copyright Information Books from ASM Press MicrobeWorld Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Parker, C. T. Articles by Mandrell, R. E. Search for Related Content PubMed PubMed Citation Articles by Parker, C. T. Articles by Mandrell, R. E.

 Previous Article  |  Next Article 

Journal of Clinical Microbiology, November 2006, p. 4125-4135, Vol. 44, No. 11
0095-1137/06/$08.00+0     doi:10.1128/JCM.01231-06

Comparative Genomic Analysis of Campylobacter jejuni Strains Reveals Diversity Due to Genomic Elements Similar to Those Present in C. jejuni Strain RM1221

U.S. Department of Agriculture, Agricultural Research Service, Western Regional Research Center, Produce Safety and Microbiology Unit, 800 Buchanan Street, Albany, California 94710

Received 15 June 2006/ Returned for modification 12 August 2006/ Accepted 18 August 2006

Analysis of the complete genomic sequence of Campylobacter jejuni strain RM1221 identified four large genomic elements, Campylobacter jejuni-integrated elements (CJIEs), that were absent from C. jejuni strain NCTC 11168. To further investigate the genomic diversity of Campylobacter, we conducted a comparative genomic analysis from a collection of 67 C. jejuni and 12 Campylobacter coli strains isolated from various geographical locations and clinical and veterinary sources. Utilizing PCR, we demonstrated that 55% of the C. jejuni strains examined were positive for at least one RM1221-like genomic element and 27% were positive for two or more of these CJIEs. Furthermore, many C. coli strains were positive for either genomic element CJIE1 or CJIE3. To simultaneously assess for the presence or absence of several genes that comprise the various CJIEs, we developed a multistrain C. jejuni DNA microarray that contained most of the putative coding sequences for strains NCTC 11168 and RM1221. A comparative genomic hybridization (CGH) analysis of 35 of the 67 C. jejuni strains confirmed the presence of genomic elements similar to those in strain RM1221. Interestingly, the DNA microarray analysis demonstrated that these genomic elements in the other C. jejuni strains often exhibited modular patterns with some regions of the CJIEs present and other regions either absent or highly divergent compared to strain RM1221. Our CGH method also identified 18 other intraspecies hypervariable regions, such as the capsule and lipooligosaccharide biosynthesis regions. Thus, the inclusion of genes from these integrated genomic elements and the genes from the other intraspecies hypervariable regions contributes to a better assessment of the diversity in C. jejuni and may increase the usefulness of DNA microarrays as an epidemiological genotyping tool. Finally, we also showed that in CJIE1, a Campylobacter Mu-like phage, is located differentially in other strains of C. jejuni, suggesting that it may integrate essentially randomly.

Published ahead of print on 30 August 2006.

This article has been cited by other articles:

• Parker, C. T., Gilbert, M., Yuki, N., Endtz, H. P., Mandrell, R. E. (2008). Characterization of Lipooligosaccharide-Biosynthetic Loci of Campylobacter jejuni Reveals New Lipooligosaccharide Classes: Evidence of Mosaic Organizations. J. Bacteriol. 190: 5681-5689 [Abstract] [Full Text]  
• Malik-Kale, P., Parker, C. T., Konkel, M. E. (2008). Culture of Campylobacter jejuni with Sodium Deoxycholate Induces Virulence Gene Expression. J. Bacteriol. 190: 2286-2297 [Abstract] [Full Text]  
• Pope, C., Wilson, J., Taboada, E. N., MacKinnon, J., Felipe Alves, C. A., Nash, J. H. E., Rahn, K., Tannock, G. W. (2007). Epidemiology, Relative Invasive Ability, Molecular Characterization, and Competitive Performance of Campylobacter jejuni Strains in the Chicken Gut. Appl. Environ. Microbiol. 73: 7959-7966 [Abstract] [Full Text]  
• Pearson, B. M., Gaskin, D. J. H., Segers, R. P. A. M., Wells, J. M., Nuijten, P. J. M., van Vliet, A. H. M. (2007). The Complete Genome Sequence of Campylobacter jejuni Strain 81116 (NCTC11828). J. Bacteriol. 189: 8402-8403 [Abstract] [Full Text]  
• Poly, F., Ewing, C., Goon, S., Hickey, T. E., Rockabrand, D., Majam, G., Lee, L., Phan, J., Savarino, N. J., Guerry, P. (2007). Heterogeneity of a Campylobacter jejuni Protein That Is Secreted through the Flagellar Filament. Infect. Immun. 75: 3859-3867 [Abstract] [Full Text]  
• Poly, F., Read, T., Tribble, D. R., Baqar, S., Lorenzo, M., Guerry, P. (2007). Genome Sequence of a Clinical Isolate of Campylobacter jejuni from Thailand. Infect. Immun. 75: 3425-3433 [Abstract] [Full Text]  
• Quinones, B., Parker, C. T., Janda, J. M. Jr., Miller, W. G., Mandrell, R. E. (2007). Detection and Genotyping of Arcobacter and Campylobacter Isolates from Retail Chicken Samples by Use of DNA Oligonucleotide Arrays. Appl. Environ. Microbiol. 73: 3645-3655 [Abstract] [Full Text]  
• Barton, C., Ng, L.-K., Tyler, S. D., Clark, C. G. (2007). Temperate Bacteriophages Affect Pulsed-Field Gel Electrophoresis Patterns of Campylobacter jejuni. J. Clin. Microbiol. 45: 386-391 [Abstract] [Full Text]