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Tag Archives: Cry genes

Evaluation of bioassays for testing Bt sweetpotato events against sweetpotato weevils

Sweetpotato weevil (Cylas puncticollis) Boheman is a serious pest throughout Sub-Saharan Africa region and is a big threat to sweetpotato cultivation. Ten transgenic sweetpotato events expressing Cry7Aa1, Cry3Ca1, and ET33-34 proteins from Bacillus thuringiensis (Bt) were evaluated for resistance against C. puncticollis. Four bioassays used were: (i) 1st instar larva in an artificial …

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Expression of sweetpotato-like cry genes to control weevils

Weevil active proteins were identified previously with efficacy against the two African weevil species, Cylas puncticollis and C. brunneus, responsible of huge production loss of the sweetpotato in sub Saharan Africa. Transformation of sweetpotato with their respective genes (cry7Aa1 and cry3Ca1) yielded a total of 17 events with either cry …

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