What does the published scientific research say about Bacillus atrophaeus?

On the biocontrol side, peer-reviewed research reports multiple B. atrophaeus strains inhibiting a range of phytopathogens — including Fusarium oxysporum f. sp. cucumerinum, Botrytis cinerea, Wilsonomyces carpophilus (shot hole disease in apricots), and Erwinia amylovora (fire blight in pear). Fengycin production, cell-wall-degrading enzymes (chitinase, glucanase, protease), and rhizosphere colonization enhanced by poly-γ-glutamic acid secretion are cited in the literature as key mechanisms.

For plant growth promotion, published studies report B. atrophaeus isolates producing IAA, solubilizing phosphate, and fixing nitrogen. Under greenhouse conditions, strains significantly promoted growth of corn (Zea mays) and tomato (Solanum lycopersicum) under limited nitrogen and triggered induced systemic resistance (ISR) against bacterial pathogens — findings drawn from both rainforest soil and heavy-metal-contaminated site isolates.