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Cyt1Ab1 and Cyt2Ba1 from Bacillus thuringiensis subsp. medellin and B. thuringiensis subsp. israelensis Synergize Bacillus sphaericus against Aedes aegypti and resistant Culex quinquefasciatus (Diptera: Culicidae).
Wirth, M C; Delécluse, A; Walton, W E.
Affiliation
  • Wirth MC; Department of Entomology, University of California, Riverside, California 92521, USA. mcwirth@mail.ucr.edu
Appl Environ Microbiol ; 67(7): 3280-4, 2001 Jul.
Article in En | MEDLINE | ID: mdl-11425753
The interaction of two cytolytic toxins, Cyt1Ab from Bacillus thuringiensis subsp. medellin and Cyt2Ba from Bacillus thuringiensis subsp. israelensis, with Bacillus sphaericus was evaluated against susceptible and resistant Culex quinquefasciatus and the nonsensitive species Aedes aegypti. Mixtures of B. sphaericus with either cytolytic toxin were synergistic, and B. sphaericus resistance in C. quinquefasciatus was suppressed from >17,000- to 2-fold with a 3:1 mixture of B. sphaericus and Cyt1Ab. This trait may prove useful for combating insecticide resistance and for improving the activity of microbial insecticides.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Bacillus / Bacterial Proteins / Bacterial Toxins / Pest Control, Biological / Aedes / Culex / Endotoxins Limits: Animals Language: En Journal: Appl Environ Microbiol Year: 2001 Document type: Article Affiliation country: United States Country of publication: United States

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Bacillus / Bacterial Proteins / Bacterial Toxins / Pest Control, Biological / Aedes / Culex / Endotoxins Limits: Animals Language: En Journal: Appl Environ Microbiol Year: 2001 Document type: Article Affiliation country: United States Country of publication: United States