Journal article
Campylobacter jejuni and Campylobacter coli genotyping by high-resolution melting analysis of a flaA fragment
Applied and Environmental Microbiology, Vol.76(2), pp.493-499
2010
Abstract
The highly variable flagellin-encoding flaA gene has long been used for genotyping Campylobacter jejuni and Campylobacter coli. High-resolution melting (HRM) analysis is emerging as an efficient and robust method for discriminating DNA sequence variants. The objective of this study was to apply HRM analysis to flaA-based genotyping. The initial aim was to identify a suitable flaA fragment. It was found that the PCR primers commonly used to amplify the flaA short variable repeat (SVR) yielded a mixed PCR product unsuitable for HRM analysis. However, a PCR primer set composed of the upstream primer used to amplify the fragment used for flaA restriction fragment length polymorphism (RFLP) analysis and the downstream primer used for flaA SVR amplification generated a very pure PCR product, and this primer set was used for the remainder of the study. Eighty-seven C. jejuni and 15 C. coli isolates were analyzed by flaA HRM and also partial flaA sequencing. There were 47 flaA sequence variants, and all were resolved by HRM analysis. The isolates used had previously also been genotyped using single-nucleotide polymorphisms (SNPs), binary markers, CRISPR HRM, and flaA RFLP. flaA HRM analysis provided resolving power multiplicative to the SNPs, binary markers, and CRISPR HRM and largely concordant with the flaA RFLP. It was concluded that HRM analysis is a promising approach to genotyping based on highly variable genes. Copyright © 2010, American Society for Microbiology. All Rights Reserved.
Details
- Title
- Campylobacter jejuni and Campylobacter coli genotyping by high-resolution melting analysis of a flaA fragment
- Authors
- S Merchant-Patel (Author) - Queensland University of TechnologyP J Blackall (Author) - Queensland Primary Industries and FisheriesJ Templeton (Author) - Queensland Primary Industries and FisheriesErin P Price (Author) - Queensland University of TechnologyS Y C Tong (Author) - Charles Darwin UniversityF Huygens (Author) - Queensland University of TechnologyP M Giffard (Author) - Queensland University of Technology
- Publication details
- Applied and Environmental Microbiology, Vol.76(2), pp.493-499
- Publisher
- American Society for Microbiology
- Date published
- 2010
- DOI
- 10.1128/AEM.01164-09
- ISSN
- 0099-2240
- Organisation Unit
- University of the Sunshine Coast, Queensland; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99450925302621
- Output Type
- Journal article
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