What benefits of Bacillus simplex have been cited in the scientific literature?
Bacillus simplex — reclassified as Peribacillus simplex — is documented in peer-reviewed research as a plant-growth-promoting rhizobacterium (PGPR) associated with multiple crops. Thirteen distinct benefits are cited in the literature for this species, making it a recurring subject of PGPR and biostimulant research.
Published studies report that B. simplex produces indole-3-acetic acid (IAA), fixes nitrogen, and generates siderophores. Research also attributes improved seed germination and vigor, higher lateral root count and root dry weight, increased leaf chlorophyll, and greater leaf concentrations of nitrogen, phosphorus, and potassium — findings reported in maize trials cited in the literature.
For those researching 'Bacillus simplex saline stress' or 'Peribacillus simplex biocontrol,' the literature reports alleviation of alkaline and saline stress in maize via reduced reactive oxygen species and malondialdehyde and elevated antioxidant enzyme activity (CAT, SOD, POD). Biocontrol activity against multiple plant pests and an inhibitory effect on rice blast are also cited in peer-reviewed research.
1AAPFCO-accepted claims
Listing details- Promotes phosphorus solubilization.
- Increases growth and plant nutrient levels.
- Microbe is a nitrogen scavenger, not a fixer. Use of bacterium increases number and dry wt of roots, some siderophores.
Accepted wording, shown verbatim · source: AAPFCO Plant Biostimulant list
2Potential claims from the literature
Reported to exhibit plant-growth-promoting properties
Reported to fix nitrogen
Reported to produce indole-3-acetic acid (IAA), a plant growth hormone
Reported to promote seed germination and enhance seed vigor in maize under both normal and NaHCO3 stress conditions
Reported to stimulate root and leaf growth, increase the number of lateral roots and root dry weight, and increase leaf length, width, and dry weight in maize
Reported to increase chlorophyll content in leaves
Reported to increase total nitrogen, total phosphorus, and total potassium content in plant leaves
Reported to alleviate saline and alkaline stress in maize by reducing reactive oxygen species (ROS) levels and malondialdehyde (MDA) content, and increasing antioxidant enzyme activities (CAT, SOD, POD)
Reported to exhibit biocontrol activity against a variety of detrimental plant pests in different crops
Reported to have an inhibitory effect on rice blast and to reduce malondialdehyde (MDA) content, increase soluble sugar content, and increase antioxidant enzyme activity in rice challenged with rice blast
Reported to produce siderophores
Reported to be part of the plant-growth-promoting rhizobacterial community of many crops
Reported to exhibit lead biosorption and bioremediation potential, with metal sequestration in the cell wall accounting for 88.5%–98.5% of total endogenous metal accumulation, suggesting potential as a biotechnological tool for agricultural soil lead bioremediation
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