High resolution genotyping of Bacillus anthracis outbreak strains using four highly mutable single nucleotide repeat markers
| Autor: | Jodi A. Beaudry, Paul Keim, Leo J. Kenefic, Russ Daly, Shaylan Zanecki, Carla B. Trim, M. Van Ert, T. Graham, R. Parmar, Lynn Y. Huynh, David M. Wagner |
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| Rok vydání: | 2008 |
| Předmět: |
DNA
Bacterial Genetic Markers Genotype Cattle Diseases Single-nucleotide polymorphism Minisatellite Repeats Multiple Loci VNTR Analysis Applied Microbiology and Biotechnology Polymerase Chain Reaction Polymorphism Single Nucleotide Disease Outbreaks Anthrax Bacterial Proteins Animals Genotyping Genetics Genetic diversity biology Outbreak biology.organism_classification Virology Bacillus anthracis Bacterial Typing Techniques Genetic marker South Dakota Trans-Activators Cattle |
| Zdroj: | Letters in applied microbiology. 46(5) |
| ISSN: | 1472-765X |
| Popis: | Aims: Bacillus anthracis is a genetically monomorphic bacterium with little diversity to be expected during an outbreak. This study used more rapidly evolving genetic markers on outbreak samples to ascertain genetic diversity. Methods and Results: Forty-seven isolates from a B. anthracis outbreak during the summer of 2005 in South Dakota were analysed using single nucleotide polymorphisms (SNP) and multi-locus VNTR analysis (MLVA). Results indicated that all of the outbreak strains belonged to a single clonal lineage. However, analysis of four single nucleotide repeat (SNR) markers resolved these isolates into six distinct genotypes providing insights into disease transmission. Conclusions: Strain determination of unknown B. anthracis samples can be ascertained by SNP and MLVA markers. However, comparison of many samples obtained during an outbreak will require markers with higher rates of mutation to ascertain genetic diversity. Significance and Impact of the Study: SNR4 analysis allowed discrimination of closely related B. anthracis isolates and epidemiological tracking of the outbreak. When used in conjunction with other genotyping schemes that allow broad genetic relationships to be determined, SNR markers are powerful tools for detailed tracking of natural B. anthracis outbreaks and could also prove useful in forensic investigations. |
| Databáze: | OpenAIRE |
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