Microbiological Insights into the Stress-Alleviating Property of an Endophytic Bacillus altitudinis WR10 in Wheat under Low-Phosphorus and High-Salinity Stresses

摘要: An indole–3–acetic acid producing Bacillus altitudinis WR10 was previously isolated from the root of wheat (Triticum aestivum L.). In this study, strain used for relieving abiotic stresses in under low phosphorus and high saline hydroponic co-culture models. Significantly, improved seed relative germination rate salinity stress (200/400 mM NaCl) dry weight seedlings (10 μM KH2PO3) when insoluble phosphates are available. To provide insights into its stress-alleviating properties, characterized further. grows well different culture conditions. Particularly, resists salt (12% hydrolyzes both inorganic organic phosphates. uses many plant-derived substrates as sole carbon energy sources. It produces catalase, amylase, phosphatase, phytase, reductase, 1–aminocyclopropane–1–carboxylate (ACC) deaminase. addition, possesses long peritrichous flagella, biofilm formation, phytase production, is induced by stresses. Overall, salinity-alleviating property can be attributed to inherent tolerance NaCl, formation biofilm, production enzymes, like ACC Meanwhile, B. reduces low-phosphorus phosphatases phytases presence