ArticleEnvironmental science and pollution research international2021
Poly-γ-glutamic acid bioproduct improves the coastal saline soil mainly by assisting nitrogen conservation during salt-leaching process.
Article in Environmental science and pollution research international, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 21 citations in OpenAlex.
- Preparation of montmorillonite/chitosan/γ-polyglutamic acid nanoparticles and evaluation of their adsorption and antibacterial performance.Scientific reports · 2025Article
- Article
- Effect of sesame cake fertilizer with γ-PGA on soil nutrient, water and nitrogen use efficiency.Scientific reports · 2024Article
- Enhanced Poly-γ-Glutamic Acid Production by a Newly Isolated Bacillus halotolerans F29.Journal of microbiology (Seoul, Korea) · 2024Article
- Enhanced Production of Poly-γ-glutamic Acid by Bacillus subtilis Using Stage-controlled Fermentation and Viscosity Reduction Strategy.Applied biochemistry and biotechnology · 2024Article
- Unveiling the regulatory mechanism of poly-γ-glutamic acid on soil characteristics under drought stress through integrated metagenomics and metabolomics analysis.Frontiers in microbiology · 2024Article
- Engineering of a newly isolated Bacillus tequilensis BL01 for poly-γ-glutamic acid production from citric acid.Microbial cell factories · 2022Article
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6 authors at 2 institutions in 1 country.
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Abstract
Salt-leaching is considered to be a major method for soil desalting in agriculture. Therefore, conservation of soil nutrition is significant to soil fertility and environment protection during the salt-leaching process. The effect of poly-γ-glutamic acid bioproduct (PGAB), which was manufactured by solid-state fermentation with the bacteria producing glutamic acid (GA) and poly-γ-glutamic acid (γ-PGA) and organic waste, on keeping nitrogen (N) during salt-leaching was investigated in this study. The isolated bacteria producing GA and γ-PGA were identified as Brevibacterium flavum and Bacillus amyloliquefaciens, respectively. After the saline soil was leached for 90 days, compared to the control, soil salinity (0-30 cm) in the PGAB treatment was decreased by 39.9%, while soil total N was significantly (P < 0.05) higher than other treatments. Furthermore, the microbial biomass N (0-30 cm) in PGAB treatment was increased by 119.5%; populations of soil total bacteria, fungi, actinomyces, nitrogen-fixing bacteria, ammonifying bacteria, nitrifying bacteria, and denitrifying bacteria and soil algae biomass were also significantly (P < 0.05) increased. In terms of physical properties, the percentage of soil aggregates with diameter > 0.25 mm was increased by 293.5%, and the soil erosion-resistance coefficient was increased by 50.0%. In conclusion, the PGAB can effectively conserve soil N during the process of salt-leaching and therefore offer a sustainable way to improve coastal saline soil.
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