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Pesticide Toxicology Laboratory

ISU Entomology / Pesticide Toxicology Laboratory / Binary insecticidal crystal protein from Bacillus thuringiensis, strain PS149B1: effects of individual protein components and mixtures in laboratory bioassays

Binary insecticidal crystal protein from Bacillus thuringiensis, strain PS149B1: effects of individual protein components and mixtures in laboratory bioassays

Authors: Herman, R.A.., Scherer, P.N., Young, D.L., Mihaliak, C.A., Meade, T., Woodsworth, A.T., Stockhoff, B.A., Narva, K.E.
Journal, Volume, Year: Journal of Economic Entomology, volume 95(3):635-639, 2002
Summary

The effects of the individual protein components and mixtures in a binary expression were examined against southern corn rootworm (Diabrotica virgifera virgifera). The bioassay used growth as an endpoint, rather than mortality, for sensitivity. The results showed that both proteins were important for maximum efficacy. The smaller protein (Cry34Ab) was active alone, but the larger (Cry35Ab) promoted growth. A mix with more of Cry34Ab than Cry35Ab was the most effective.

Comments

Future product for rootworm use.