Selection with Bacillus thuringiensis subsp. kurstaki, which contains CryIA and CryII toxins, caused a >200-fold cross-resistance to CryIF toxin from B. thuringiensis subsp. aizawai in the diamondback moth, Plutella xylostella. CryIE was not toxic, but CryIB was highly toxic to both selected and unselected larvae. The results show that extremely high levels of cross- resistance can be conferred across classes of CryI toxins of B. thuringiensis.
ASJC Scopus subject areas
- Food Science
- Applied Microbiology and Biotechnology