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Pesticide Toxicology Laboratory

ISU Entomology / Pesticide Toxicology Laboratory / Asorption of the Bacillus thuringiensis toxin (Cry1Ab) on Na-montomorillonite and on the clay fractions of different soils

Asorption of the Bacillus thuringiensis toxin (Cry1Ab) on Na-montomorillonite and on the clay fractions of different soils

Authors: Pagel-Weider, S.; Gessler, F.; Niemeyer, J.; Schroder, D.
Journal, Volume, Year: Journal of Plant Nutrition and Soil Science, volume 167:184-188, 2004
Summary

Investigated the binding of Bt Cry1Ab protein to Na-montmorillonite or the clay fractions from different field-collected soils. The binding affinities ranged from k=47.7 to k=366.7. In general, soils with lower organic carbon content had higher adsorption of Bt protein. The soil organic carbon may be hindering the protein interaction with the clay matter. Soil pre-treated with hydrogen peroxide did not exhibit the same relationship, with affinities ranging from k=72.43 to k=216.9. H2O2 treatment may alter surface chemistry.

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