Identification and characterization of a novel Bacillus thuringiensis δ-endotoxin entomocidal to coleopteran and lepidopteran larvae



A new class of Bacillus thuringiensisδ-endotoxins, or insecticidal control proteins (ICPs), is defined by an apparently cryptic protein with a unique primary structure and novel entomocidal specificity for certain coleopteran and lepidopteran species. The discovery of a new group of ICPs will extend the use of this natural insecticide in integrated pest-management systems.