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Abstract
The entomocidal CryIIIA δ-endotoxin protein of
Bacillus thuringiensis var.
tenebrionis is distinctive in chemistry and host range. In contrast to other δ-endotoxins, the CryIIIA parasporal crystals are toxic within the acidic midgut environment of several coleopteran species, particularly those in the family Chrysomelidae. Resistance to this toxin was successfully developed by laboratory selection of
Leptinotarsa decemlineata (Whalon et al., 1993) and
Chrysomela scripta (L. S. Bauer, D. L. Miller, and C. N. Koller, unpublished). Our investigations of the
B. thuringiensis var.
tenebrionis CryIIIA crystal toxin targets both the mode of action and the mechanisms of resistance in these insect species.
Citation
Koller, C. Noah; Bauer, Leah S.; Hollingworth, Robert M. 1995. A method for
in Vivo radiolabeling
Bacillus thuringiensis native δ-endotoxin crystals. Journal of Invertebrate Pathology 66:90-91
