What does the published scientific research say about Bacillus thuringiensis?

Eight PubMed articles indexed here place Bacillus thuringiensis in a plant-input context. Peer-reviewed research on Bt overwhelmingly centers on its role as a microbial bioinsecticide — Cry toxin diversity, cry gene engineering, and activity against pests such as Spodoptera frugiperda — but the scientific literature on Bacillus thuringiensis extends well beyond pest control.

Multiple cited reviews report that Bt produces indole-3-acetic acid and can solubilize phosphate, functioning as a plant-growth-promoting rhizobacterium and successful endophyte in many crops. One study across 25 Bt isolates confirmed IAA production across all strains. The same literature notes that no commercial Bt-based PGPR biofertilizer products have yet reached market — a gap the authors characterize as a research opportunity.