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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.
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BMC Microbiology

ISSN: 1471-2180

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