Genetic relationship in the ‘Bacillus cereus group’ by rep-PCR fingerprinting and sequencing of a Bacillus anthracis-specific rep-PCR fragment
Article first published online: 13 MAY 2003
Journal of Applied Microbiology
Volume 94, Issue 6, pages 1108–1119, June 2003
How to Cite
Cherif, A., Brusetti, L., Borin, S., Rizzi, A., Boudabous, A., Khyami-Horani, H. and Daffonchio, D. (2003), Genetic relationship in the ‘Bacillus cereus group’ by rep-PCR fingerprinting and sequencing of a Bacillus anthracis-specific rep-PCR fragment. Journal of Applied Microbiology, 94: 1108–1119. doi: 10.1046/j.1365-2672.2003.01945.x
- Issue published online: 13 MAY 2003
- Article first published online: 13 MAY 2003
- 2002/478: received 4 December 2002, revised 13 February 2003 and accepted 21 February 2003
- Bacillus anthracis;
- Bacillus cereus group;
- genetic relationship;
Aims: To evaluate the genetic relationship in the Bacillus cereus group by rep-PCR fingerprinting.
Methods and Results: A collection of 112 strains of the six species of the B. cereus group was analysed by rep-PCR fingerprinting using the BOX-A1R primer. A relative genetic distinctness was found among the species. Cluster analysis of the rep-PCR patterns showed clusters of B. thuringiensis strains quite separate from those of B. cereus strains. The B. anthracis strains represented an independent lineage in a B. cereus cluster. The B. mycoides, B. pseudomycoides and B. weihenstephanensis strains were clustered into three groups at some distance from the other species. Comparison of sequences of AC-390, a typical B. anthracis rep-PCR fragment, from 27 strains of B. anthracis, B. cereus, B. thuringiensis and B. weihenstephanensis, representative of different clusters identified by rep-PCR fingerprinting, confirmed that B. anthracis diverges from its related species.
Conclusions: The genetic relationship deduced from the rep-PCR patterns indicates a relatively clear separation of the six species, suggesting that they can indeed be considered as separate units.
Significance and Impact of the Study: rep-PCR fingerprinting can make a contribution in the clarification of the genetic relationships between the species of the B. cereus group.