Bacillus thuringiensis serovars bolivia, vazensis and navarrensis meet the description of Bacillus weihenstephanensis.
The Bacillus cereus sensu lato group comprises six related species: B. cereus, B. anthracis, B. thuringiensis, B. mycoides, B. pseudomycoides and B. weihenstephanensis. Bacillus thuringiensis is a mesophile. It is distinguished from other members of the B. cereus group by the apparition of an inclusion body upon sporulation. B. weihenstephanensis, however, is a psychrotolerant. It grows at 7 degrees C but not at 43 degrees C. It is further characterised by the presence of specific signature sequences on two genes, the 16S rRNA gene (the small subunit ribosomal RNA gene) and cspA (encoding the major cold shock protein). Five B. thuringiensis serovars selected from previous studies, bolivia, vazensis, navarrensis, azorensis and asturiensis were studied here for their capability to grow at 7 degrees C but not at 43 degrees C. Next, their 16S rRNA and cspA genes were analysed for the presence of B. weihenstephanensis-specific signature sequences. Bacillus thuringiensis serovars bolivia, vazensis and navarrensis met the description of B. weihenstephanensis.
Soufiane
Brahim
B
Research Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, QC, Canada.
Côté
Jean-Charles
JC
D001413:Bacillus thuringiensis / Q000145:classification* / Q000235:genetics / Q000502:physiology; D001426:Bacterial Proteins / Q000235:genetics; D016000:Cluster Analysis; D003080:Cold Temperature; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D006360:Heat-Shock Proteins / Q000235:genetics; D006358:Hot Temperature; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D016601:RNA-Binding Proteins / Q000235:genetics; D017422:Sequence Analysis, DNA
D001426:Bacterial Proteins; C099484:CspA protein, Bacillus; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D006360:Heat-Shock Proteins; D012336:RNA, Ribosomal, 16S; D016601:RNA-Binding Proteins