Genotyping of Bacillus cereus Strains by Microarray-Based Resequencing
Author Information
Author(s): Michael E. Zwick, Kiley Maureen P., Stewart Andrew C., Mateczun Alfred, Read Timothy D.
Primary Institution: Biological Defense Research Directorate, Naval Medical Research Center
Hypothesis
Can custom-designed resequencing arrays effectively distinguish between Bacillus anthracis and closely related Bacillus cereus strains?
Conclusion
The study demonstrates that resequencing arrays can efficiently genotype Bacillus cereus strains and distinguish them from Bacillus anthracis.
Supporting Evidence
- Resequencing arrays can distinguish between closely related Bacillus strains.
- The study involved a diverse collection of 41 Bacillus strains.
- Custom-designed arrays were based on the genome sequence of Bacillus anthracis.
- Phylogenetic trees were constructed to analyze the relationships among strains.
- Microarrays allow for more sequence to be probed than traditional methods.
Takeaway
Researchers used a special tool to look at the DNA of 41 types of bacteria to see how they are related, helping to tell apart harmful bacteria from harmless ones.
Methodology
Custom-designed resequencing arrays were used to obtain genomic sequences from 41 Bacillus strains, followed by phylogenetic analysis.
Limitations
The method may not effectively survey more distantly related strains due to greater nucleotide divergence.
Digital Object Identifier (DOI)
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