What does the published scientific research say about Bacillus simplex?

Eight PubMed records document Bacillus simplex — formally reclassified as Peribacillus simplex — across genome reports, agronomic trials, and environmental studies. Researchers searching for Peribacillus simplex plant growth promotion or what the research says about Bacillus simplex will find a growing literature anchored in soil, rhizosphere, and endophytic isolates from diverse cropping systems.

Multiple peer-reviewed studies report nitrogen fixation, indole-3-acetic acid (IAA) production, and siderophore synthesis in P. simplex strains. A maize endophyte study on isolate M1 found improved seed germination, root development, and chlorophyll content under saline-alkaline stress, alongside reduced malondialdehyde and elevated antioxidant enzyme activity — cited by the authors as supporting potential use as a biological inoculant in salt-affected soils.

Biocontrol activity is documented in a wild-rice screening study, where a P. simplex isolate suppressed rice blast alongside phosphorus and potassium solubilization. Lead bioremediation is also reported in peer-reviewed research: Bacillus simplex strain 115 demonstrated heavy-metal biosorption via cell wall sequestration, with lead accounting for 88.5–98.5% of total endogenous accumulation.