Mosquitocidal bacterial toxins: diversity, mode of action and resistance phenomena

Memórias do Instituto Oswaldo Cruz

Jean-françois Charles¹  Christina Nielsen-leroux¹ 

[1] ,Institut Pasteur Bactéries et Champignons Entomopathogènes Paris,France

关键词: Bacillus thuringiensis;    Bacillus sphaericus;    Brevibacillus laterosporus;    Clostridium bifermentans;    toxin binding;    receptor;    resistance;   

DOI  :  10.1590/S0074-02762000000700034

来源: SciELO

【 摘 要 】

Bacteria active against dipteran larvae (mosquitoes and black flies) include a wide variety of Bacillus thuringiensis and B. sphaericus strains, as well as isolates of Brevibacillus laterosporus and Clostridium bifermentans. All display different spectra and levels of activity correlated with the nature of the toxins, mainly produced during the sporulation process. This paper describes the structure and mode of action of the main mosquitocidal toxins, in relationship with their potential use in mosquito and/or black fly larvae control. Investigations with laboratory and field colonies of mosquitoes that have become highly resistant to the B. sphaericus Bin toxin have shown that several mechanisms of resistance are involved, some affecting the toxin/receptor binding step, others unknown.

【 授权许可】

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