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Table 1 Toxin production by representative isolates of each B. cereus s. l. species identified in this study, under various combinations of temperature and growth medium

From: Characterization of the spore-forming Bacillus cereus sensu lato group and Clostridium perfringens bacteria isolated from the Australian dairy farm environment

   12°C 25°C 37°C
   10% RSM TSBYE 10% RSM TSBYE 10% RSM TSBYE
   Nhe Hbl Nhe Hbl Nhe Hbl Nhe Hbl Nhe Hbl Nhe Hbl
Bc14-005 24 h NT NT NT NT ++ - +++ - + - +++ -
B. cereus s. s. 48 h + - - - ++ - +++ - + - +++ -
Bc14-006 24 h NT NT NT NT - - ++ - - - + -
B. pseudomycoides 48 h - - - - - - +++ - - - + -
Bc14-009 24 h NT NT NT NT + - +++ - - - + -
B. mycoides 48 h + - + - + - +++ + - - + -
Bc14-026 24 h NT NT NT NT - - - - - - - -
B. weihenstephanensis 48 h - - - - + - + - - - - -
Bc13-016 24 h NT NT NT NT ++ - +++ - + - ++ +
B. thuringiensis 48 h + - - - + - +++ - ++ - ++ -
  1. NT, Not tested; −, no detectable toxin; +, low toxin production; ++, intermediate toxin production, +++, strong toxin production.