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. 2010 Feb;76(3):982-4.
doi: 10.1128/AEM.02116-09. Epub 2009 Dec 18.

Physical characteristics of spores of food-associated isolates of the Bacillus cereus group

Chandrakant Ankolekar  1 , Ronald G Labbé
Affiliations

Physical characteristics of spores of food-associated isolates of the Bacillus cereus group

Chandrakant Ankolekar et al. Appl Environ Microbiol. 2010 Feb.

Abstract

All 47 food-borne isolates of Bacillus cereus sensu stricto, as well as 10 of 12 food-borne, enterotoxigenic isolates of Bacillus thuringiensis, possessed appendages. Spores were moderately to highly hydrophobic, and each had a net negative charge. These characteristics indicate that spores of food-associated B. thuringiensis and not only B. cereus sensu stricto have high potential to adhere to inert surfaces.

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Figures

FIG. 1.
FIG. 1.
Electron micrographs of Bacillus cereus group spores. (a) Shadowed image of B. cereus 85 showing appendages and exosporium; (b) appendage alone; (c) B. cereus 133 showing appendage and exosporium; (d) B. thuringiensis 129 showing appendage, exosporium, and inclusion; (e) negative stain of B. thuringiensis 129 showing lophotrichous appendages; (f) shadowed image of B. mycoides 157 showing exosporium and lack of appendages.
See this image and copyright information in PMC

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