Unraveling the new member Bacillus pumilus SH-9 of Bacillaceae family and its potential role in seed biopriming to mitigate drought stress in Oryza sativa

• DOI: 10.1016/j.stress.2023.100318
• Publication Date: 2023-12-09T13:57:36Z
• Authors: Shifa Shaffique; Muhammad Imran; Arjun adhikari; Md. Injamum-Ul-Hoque; Nazree Zainurin; Odongkara Peter; Sarah Owdah Alomrani; Muhammad Aaqil khan; Sang-Mo kang; In-Jung Lee
• Keywords: Bacillus pumilus; Radicle

Rice is an important cereal crop cultivated worldwide to meet the need of hungry populations. Drought stress a major problem that reduces productivity by up 50%. Beneficial microbes have potential mitigate drought in various crops. The use beneficial microorganisms seed biopriming techniques enhances germination through production antioxidants and phytohormones. In this study, novel bacterial strain SH-9 was isolated screened for biological tolerance assays. exhibited plant growth-promoting characteristics such as abscisic acid (2.18 ± 0.05 ng/ml), phosphate solubilization index (4.69 0.30), sucrose (0.72 mg/ml). oxidative assay also revealed remarkable antioxidant molecules catalase, superoxide dismutase, ascorbate peroxidase. Germination metrics were measured experimental (Oryza sativa) treated with SH-9. Surprisingly, found be significantly drought-tolerant it could tolerate 35% PEG 6000. Seed enhanced 90% improved vigor index, energy, rate index. It seedling rice compared control group. This study demonstrated has excellent enhance even under stress. Molecular identification new member Bacillaceae family gene accession number ON753949. Overall, expected further research on employing plants will lead technique being employed form sustainable management agriculture.