However, while the presence of the cytK-1 gene is a reliable marker for B. cytotoxicus, not all strains feature a cytotoxic activity (Fagerlund et al., 2007, 2010). Nevertheless,
Guinebretiére et al. (2010) still estimated the food poisoning potential
for B. cytotoxicus (phylogenetic group VII) to be high.
While the natural habitat of B. cytotoxicus has yet to be determined,
the majority of strains described so far were isolated from vegetable