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The Pattern of toxin genes and expression of diarrheal enterotoxins in Bacillus thuringiensis strains isolated from commercial bioinsecticides

Scarano, Christian and Virdis, Salvatore and Cossu, Francesca and Frongia, R. and De Santis, Enrico Pietro Luigi and Cosseddu, A. M. (2009) The Pattern of toxin genes and expression of diarrheal enterotoxins in Bacillus thuringiensis strains isolated from commercial bioinsecticides. Veterinary Research Communications, Vol. 33 (Suppl. 1), p. 257-260. eISSN 1573-7446. Article.

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DOI: 10.1007/s11259-009-9288-2

Abstract

Bacillus thuringiensis (Bt) is a gram positive sporeforming bacillus included in the Bacillus cereus group. Bt produces a parasporal insecticidal protein crystal, a protoxin of the δ-endotoxin that has insecticidal properties (Schnepf et al. 1998). Bt has been used in bioinsecticidal formulations for decades and it is either sprayed directly on plants or else used to coat the seeds. However, some outbreaks of foodborne disease due to Bt have been reported and a large number of its strains can produce enterotoxins (EFSA 2007). Bacillus cereus (Bc) is the most representative species of the Bacillus cereus group and is identified as the species of this group that typically causes foodborne disease in humans. Bc does not produce the parasporal crystal. It can develop and produce toxins in food, causing emetic syndrome, or in the human intestine, causing gastroenteritis (Schoeni and Wong 2005).

Item Type:Article
ID Code:7290
Status:Published
Refereed:Yes
Uncontrolled Keywords:B. thuringiensis, bioinsecticides, toxin genes pattern, toxin production
Subjects:Area 07 - Scienze agrarie e veterinarie > VET/04 Ispezione degli alimenti di origine animale
Divisions:001 Università di Sassari > 01 Dipartimenti > Biologia animale
Publisher:Springer
eISSN:1573-7446
Additional Information:Paper presented at the "62. Annual meeting of the Italian Society for Veterinary sciences (SISVET), San Benedetto del Tronto (Ascoli Piceno) 2008".
Deposited On:23 Mar 2012 13:44

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