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Applied and Environmental Microbiology, June 2007, p. 4089-4093, Vol. 73, No. 12
0099-2240/07/$08.00+0     doi:10.1128/AEM.02345-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Swarming Behavior of and Hemolysin BL Secretion by Bacillus cereus{triangledown} ,{dagger}

Emilia Ghelardi,1* Francesco Celandroni,1 Sara Salvetti,1 Mara Ceragioli,1 Douglas J. Beecher,3 Sonia Senesi,2 and Amy C. L. Wong4

Dipartimento di Patologia Sperimentale, Biotecnologie Mediche, Infettivologia ed Epidemiologia,1 Dipartimento di Biologia, Università di Pisa, 56127 Pisa, Italy,2 FBI Laboratory, 2501 Investigation Parkway, Quantico, Virginia 22135,3 Food Research Institute, Department of Food Microbiology and Toxicology, University of Wisconsin—Madison, Madison, Wisconsin 537064

Received 4 October 2006/ Accepted 16 April 2007

An association between swarming and hemolysin BL secretion was observed in a collection of 42 Bacillus cereus isolates (P = 0.029). The highest levels of toxin were detected in swarmers along with swarm cell differentiation (P = 0.021), suggesting that swarming B. cereus strains may have a higher virulence potential than nonswarming strains.

* Corresponding author. Mailing address: Dipartimento di Patologia Sperimentale, Biotecnologie Mediche, Infettivologia ed Epidemiologia, Università degli Studi di Pisa, Via S. Zeno 35-39, 56127 Pisa, Italy. Phone: 39 050 2213696. Fax: 39 050 2213711. E-mail: ghelardi{at}biomed.unipi.it

{triangledown} Published ahead of print on 20 April 2007.

{dagger} Supplemental material for this article may be found at http://aem.asm.org/.

Applied and Environmental Microbiology, June 2007, p. 4089-4093, Vol. 73, No. 12
0099-2240/07/$08.00+0     doi:10.1128/AEM.02345-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Salvetti, S., Celandroni, F., Ceragioli, M., Senesi, S., Ghelardi, E. (2009). Identification of non-flagellar genes involved in swarm cell differentiation using a Bacillus thuringiensis mini-Tn10 mutant library. Microbiology 155: 912-921 [Abstract] [Full Text]  


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