Journal or Publishing Institution: Journal of Environmental Quality
Study: https://dl.sciencesocieties.org/publications/jeq/abstracts/29/3/JEQ0290030691
Author(s): Stotzky, G.
Article Type: Journal Publication
Record ID: 2224
Abstract: Insecticidal proteins produced by various subspecies of Bacillus thuringiensis and bacterial transforming DNA bind rapidly and tightly on clays, both pure mined clay minerals and soil clays, and on humic acids extracted from soil. This binding reduces the susceptibility of these biomolecules, which retain their biological activity when bound, to microbial degradation. The persistence of bound insecticidal toxins may enhance the control of target pests, constitute a hazard to nontarget organisms, and result in the selection and enrichment of toxin-resistant target insects. The persistence of bound DNA has relevance to horizontal gene transfer in soil. Because of the large differences in the chemical composition and structure between these proteins and DNA, as well as between clays and humic acids, these studies can serve as models for the potential fate and effects of other biomolecules that will be introduced to soil from “factories” of transgenic plants and animals genetically engineered to produce vaccines, hormones, antibodies, toxins, pharmaceuticals, and other bioactive compounds.
Keywords: Proteins, Bacillus thuringiensis, Biological Activity in Soil, binding, clay, clay minerals, DNA, environmental impact, gene transfer, humic acids, insecticidal action, microbial degradation, nontarget effects, persistence, bacterium, deoxyribonucleic acid, environmental effects
Citation: Stotzky, G., 2000. Persistence and biological activity in soil of insecticidal proteins from Bacillus thuringiensis and of bacterial DNA bound on clays and humic acids. Journal of Environmental Quality, 29(3), pp.691-705.
