What benefits of Bacillus haynesii have been cited in the scientific literature?
On the plant growth-promotion side, peer-reviewed studies report that Bacillus haynesii produces indole acetic acid (IAA), solubilizes phosphate and potassium, fixes nitrogen, and produces siderophores — even under halophilic conditions. Wheat inoculation studies cited in the literature describe up to a 68.91% increase in shoot phosphorus content and a twofold rise in chlorophyll under moderate drought and low-phosphorus conditions.
Research on Bacillus haynesii salt stress tolerance reports the highest biomass accumulation and effective tiller count in rice at 200 mM NaCl, with induction of antioxidant enzymes (CAT, SOD, APX, PAL) and modulation of salt-stress genes including OsPIP1 and MnSOD1. These findings represent literature citations, not approved label claims or regulatory endorsements.
1AAPFCO-accepted claims
Listing details- Beneficial to plants and/or soils.
Accepted wording, shown verbatim · source: AAPFCO Plant Biostimulant list
2Potential claims from the literature
Reported to exhibit antagonistic activity against Fusarium oxysporum f. sp. ciceris, Fusarium oxysporum f. sp. lentis, and Fusarium udum causing wilt disease of chickpea, lentil, and pigeonpea, respectively
Reported to produce phosphatase enzyme activity
Reported to produce indole acetic acid (IAA)
Reported to produce siderophores
Reported to produce an extracellular chitinase (BhChi) with antifungal properties against Fusarium oxysporum and Penicillium chrysogenum, reinforcing its potential as a biocontrol agent
Reported to produce volatile compounds that inhibited Xanthomonas citri pv. punicae (Xcp) growth in vitro, and field application reduced pomegranate bacterial blight disease index by 47–68%
Reported to induce ROS-scavenging enzymes (catalase and peroxidase) in pomegranate host tissue upon endophytic colonization
Reported to significantly enhance plant growth parameters in vivo based on bonitur score assessment in Cicer arietinum
Reported to produce indole acetic acid (IAA), solubilize phosphate and potassium, fix nitrogen, and produce siderophores as plant growth-promoting characteristics under halophilic/halotolerant conditions
Reported to fix nitrogen, with nitrogen-fixing capacity measured in Jensen's agar medium
Reported to solubilize phosphate
Reported to solubilize potassium
Reported to significantly increase shoot P content (up to 68.91%) and chlorophyll content (2-fold increase) in wheat under moderate drought and low-P availability conditions
Reported to enhance wheat growth (shoot and root dry weights) and rhizosphere available P under moderate drought and low-P availability conditions
Reported to result in the highest biomass accumulation and number of effective tillers in rice under elevated salinity (200 mM NaCl) conditions
Reported to induce antioxidant enzymes (CAT, SOD, PO, PPO, APX, and PAL) and modulate expression of salt stress-responsive genes (OsPIP1, MnSOD1, cAPXa, CATa, SERF, and DHN) in rice under elevated salinity
Reported to improve photosynthetic machinery in rice under elevated salinity conditions
See the full picture on Bacillus haynesii
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