The strain HD-1, belonging to subsp. kurstaki (De Barjac and Lemille, 1970), soon became the main commercial focus
for the management of lepidopteran pests in agriculture and forestry. Beside it, today other strains are commercially
available, such as SA-11, SA-12, PB 54, ABTS- 351 and EG2348, all isolated from insects or soil, and expressing a range of different toxins mostly belonging to the Cry1 and Cry2 families. Subsequently, the discovery of a Bt strain belonging to the subsp