Selective inactivation of spores maintaining larvicidal activity in Bt serovar israelensis irradiated with gamma rays
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Neotropical Biology and Conservation
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Bacillus thuringiensis is used to produce biopesticides against target-insects of importance
in agroindustry and human health. However, B. thuringiensis can carry the same enterotoxin-encoding genes as Bacillus cereus, suggesting a potential risk of food poisoning.
The objective of this work was to study the application of gamma radiation to eliminate
spores in biopesticides based on B. thuringiensis serovar israelensis in order to avoid
the liberation of these spores in the environment. The application of 20 kGy of radiation
ensures total inactivation of the spores in the insecticide without changing the larvicidal
activity. Results showed that it is possible to develop formulations containing B. thuringiensis serovar israelensis (IPS-82) eliminating viable spores with gamma radiation without
affecting the larvicidal activity. Irradiated formulations would be safer for the environment
and humans since the elimination of viable spores abolishes the pathogenic potential of
B. thuringiensis strains.
Como referenciar
RABINOVITCH, LEON; MASTRO, NELIDA L. del; SILVA, CLAUDIA M.B.; SANTOS, BERNADETE S,; RESENDE, MARCELO; VIVONI, ADRIANA M.; ALVES, REGINA S.A. Selective inactivation of spores maintaining larvicidal activity in Bt serovar israelensis irradiated with gamma rays. Neotropical Biology and Conservation, v. 9, n. 3, p. 120-124, 2014. DOI: 10.4013/nbc.2014.93.01. Disponível em: http://repositorio.ipen.br/handle/123456789/25465. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.