Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/17760
Título: Synergistic activity of Bacillus thuringiensis toxins against Simulium spp. larvae
Autor: Monnerat, Rose Gomes
Pereira, Eleny da Silva
Teles, Beatriz Ronchi
Martins, Érica Soares
Praça, Lílian Botelho
Queiroz, Paulo Roberto
Soberon, Mario
Bravo, Alejandra
Ramos, Felipe Rosa
Soares, Carlos Marcelo Silveira
Palavras-chave: Bacterial Protein
Endotoxin
Hemolysin
Insecticidal Crystal Protein, Bacillus Thuringiensis
Insecticide
Animals
Bacillus Thuringiensis
Pest Control, Biological
Drug Potentiation
Larva
Simuliidae
Animal
Bacillus Thuringiensis
Bacterial Proteins
Drug Synergism
Endotoxins
Hemolysin Proteins
Insecticides
Larva
Pest Control, Biological
Simuliidae
Data do documento: 2014
Revista: Journal of Invertebrate Pathology
É parte de: Volume 121, Pags. 70-73
Abstract: Species of Simulium spread diseases in humans and animals such as onchocerciasis and mansonelosis, causing health problems and economic loses. One alternative for controlling these insects is the use of Bacillus thuringiensis serovar israelensis (Bti). This bacterium produces different dipteran-active Cry and Cyt toxins and has been widely used in blackfly biological control programs worldwide. Studies on other insect targets have revealed the role of individual Cry and Cyt proteins in toxicity and demonstrated a synergistic effect among them. However, the insecticidal activity and interactions of these proteins against Simulium larvae have not been reported. In this study we demonstrate that Cry4Ba is the most effective toxin followed by Cry4Aa and Cry11Aa. Cry10Aa and Cyt1Aa were not toxic when administered alone but both were able to synergise the activity of Cry4B and Cry11Aa toxins. Cyt1Aa is also able to synergise with Cry4Aa. The mixture of all toxin-producing strains showed the greatest level of synergism, but still lower than the Bti parental strain. © 2014 Elsevier Inc.
DOI: 10.1016/j.jip.2014.07.003
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