The soil microbiome enhances sesame growth and oil composition, and soil nutrients under saline conditions
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View abstract on PubMed
Summary
This summary is machine-generated.Halotolerant plant growth-promoting rhizobacteria (PGPR) effectively enhance sesame growth in saline soils. These beneficial microbes improve plant health, oil quality, and soil properties under salt stress.
Area Of Science
- Agricultural Microbiology
- Plant Science
- Environmental Science
Background
- Soil salinity is a major abiotic stress limiting crop productivity worldwide.
- Plant growth-promoting rhizobacteria (PGPR) offer a sustainable approach to mitigate salinity stress.
- Halophilic PGPR can thrive in saline environments and support plant growth.
Purpose Of The Study
- To isolate and identify salt-tolerant PGPR from Indian coastal saline soils.
- To evaluate the efficacy of selected PGPR strains in improving sesame growth under salinity.
- To assess the impact of PGPR inoculation on sesame plant physiology and soil health.
Main Methods
- Isolation and screening of halophilic bacteria for PGPR traits (siderophore, IAA, HCN, ammonia, EPS, cellulase, phosphate solubilization).
- Identification of salt-tolerant PGPR strains using 16S rRNA gene sequencing (Pseudomonas toyotomiensis, Bacillus subtilis, Bacillus cereus).
- Inoculation of sesame plants with PGPR in saline soil and assessment of growth parameters, metabolic activity, and soil properties.
Main Results
- Three salt-tolerant PGPR strains were identified: Pseudomonas toyotomiensis, Bacillus subtilis, and Bacillus cereus.
- PGPR inoculation significantly improved sesame plant morphology, metabolic activity, and antioxidant capacity.
- Enhanced sesame oil quality and improved soil physicochemical properties were observed in PGPR-treated plants.
Conclusions
- Halotolerant PGPR, including P. toyotomiensis, B. subtilis, and B. cereus, are effective bioinoculants for saline soils.
- These PGPR enhance sesame growth and salinity tolerance, offering a sustainable agricultural solution.
- The study highlights the potential of PGPR for improving crop productivity in salt-affected regions.
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