What does the published scientific research say about Bacillus uniflagellatus?

Bacillus uniflagellatus — classified under the widely used synonym Bacillus subtilis — is referenced in 8 PubMed articles indexed here in a plant-input context. Studies examining what Bacillus uniflagellatus does in agriculture span wheat, tomato, barley, citrus, rice, and orchid root systems, consistently characterizing it as a plant growth-promoting rhizobacterium.

The peer-reviewed literature cites several mechanisms: IAA (auxin) production, siderophore biosynthesis, phosphate solubilization, and modulation of abscisic acid that affects root aquaporin abundance and hydraulic conductivity. Reported outcomes include improved zinc and iron concentrations in wheat grains, increased tomato shoot and root biomass with documented rhizosphere colonization, and enhanced nitrogen-use efficiency in citrus orchards — one study also noting improved phosphorus and potassium uptake alongside reduced synthetic fertilizer dependence. These are cited findings, not regulatory endorsements or approved label claims.