Biopesticidas: Mecanismos de ação biocida em insetos-praga

Autores

DOI:

https://doi.org/10.33448/rsd-v10i7.16893

Palavras-chave:

Controle Biológico; Entomopatogênico; Adhesin; Toxina Cry

Resumo

As pragas de insetos são a principal preocupação dos agricultores, o que os leva a exercer práticas de controle inadequadas; causando um uso indiscriminado de pesticidas químicos; o que resultou na deterioração e desarmonização do meio ambiente e da saúde humana. Nos últimos anos, os biopesticidas têm sido utilizados como alternativa saudável para o controle de insetos-praga; cujos mecanismos de ação biocida motivaram a presente revisão. Neste artigo de revisão, foram utilizados 63 artigos de pesquisa científica sobre entomopatógenos, dos quais 20 correspondem a tópicos de uma abordagem genética (genes de virulência), 23 artigos detalham os mecanismos de ação dos fungos entomopatogênicos, 08 explicam os mecanismos de ação que exerce a bactéria Bacillus thuringiensis e 12 artigos sobre características de bioinseticidas microbianos comerciais. Com isso podemos concluir que fungos e bactérias são os microrganismos entomopatogênicos mais utilizados na formulação de biopesticidas, sendo as espécies Metarhizium anisopliae, Beauveria bassiana e Bacillus thuringiensis as espécies mais utilizadas. Destas últimas, sua eficácia biocida baseia-se na ação da proteína Cry e, das primeiras, sua eficácia depende da adesão do esporo à cutícula do inseto praga.

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Publicado

27/06/2021

Como Citar

MIRANDA , A. V. C. .; ESPEJO, Y. del C. B.; SALAS , J. L. T. F. .; GONZALES , H. H. S. .; AGUILERA, J. G. .; MARTÍNEZ, L. A. . Biopesticidas: Mecanismos de ação biocida em insetos-praga. Research, Society and Development, [S. l.], v. 10, n. 7, p. e42010716893, 2021. DOI: 10.33448/rsd-v10i7.16893. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/16893. Acesso em: 22 dez. 2024.

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Ciências Agrárias e Biológicas