What does the published scientific research say about Bacillus siamensis?

Eight peer-reviewed PubMed articles reference Bacillus siamensis (also published under the synonym Bacillus vanillea) in agricultural input contexts, covering biocontrol, plant growth promotion, and heavy-metal bioremediation across multiple crops.

The literature reports that strains of Bacillus siamensis produce lipopeptide antibiotics — including iturin, surfactin, and fengycin homologs — and volatile organic compounds that inhibit a range of economically damaging fungi. Research on strains NEAU-ZGX24, YC-9, CNE6, and CU-XJ-9 documents antifungal activity against Botrytis cinerea, Fusarium oxysporum, Fusarium graminearum, and related pathogens in tomato, cucumber, and other crops, with control efficacies cited in some pot and field studies.

Peer-reviewed studies also cite phosphate solubilization, IAA production, siderophore synthesis, and ACC deaminase activity across multiple isolates. Field trials with strain CCT8089 reported yield gains in maize and soybean relative to non-inoculated controls. Strain R27 is reported in the literature to reduce cadmium accumulation in lettuce under heavy-metal stress.