Novel mechanism and degradation kinetics of allethrin using Bacillus megaterium strain HLJ7 in contaminated soil/water environments

Environmental Research, Journal Year: 2022, Volume and Issue: 214, P. 113940 - 113940

Published: Aug. 8, 2022

Language: Английский

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Biofilm formation in xenobiotic-degrading microorganisms

Critical Reviews in Biotechnology, Journal Year: 2022, Volume and Issue: 43(8), P. 1129 - 1149

Published: Sept. 28, 2022

The increased presence of xenobiotics affects living organisms and the environment at large on a global scale. Microbial degradation is effective for removal from ecosystem. In natural habitats, biofilms are formed by single or multiple populations attached to biotic/abiotic surfaces interfaces. attachment microbial cells these possible via matrix extracellular polymeric substances (EPSs). However, molecular machinery underlying development differs depending species. Biofilms act as biocatalysts degrade xenobiotic compounds, thereby removing them environment. Quorum sensing (QS) helps with biofilm formation linked in contaminated sites. To date, scant information available about biofilm-mediated toxic chemicals Therefore, we review novel insights into impact contamination remediation, regulation sites, implications large-scale compound treatment.

Language: Английский

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Current insights into the microbial degradation of nicosulfuron: Strains, metabolic pathways, and molecular mechanisms

Chemosphere, Journal Year: 2023, Volume and Issue: 326, P. 138390 - 138390

Published: March 17, 2023

Language: Английский

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Modeling and optimization of chlorpyrifos and glyphosate biodegradation using RSM and ANN: Elucidating their degradation pathways by GC-MS based metabolomics

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 252, P. 114628 - 114628

Published: Feb. 10, 2023

Ongoing and extensive use of pesticides negatively impact the environment human health. Microbe-based remediation bears importance as it is an eco-friendly cost-effective technique. The present study investigated chlorpyrifos (CHL) glyphosate (GLY) degrading potential Bacillus cereus AKAD 3-1, isolated from soybean rhizosphere. Optimization validation different process variables were carried out by response surface methodology (RSM) artificial neural network (ANN). Critical parameters which affect degradation are initial pesticide concentration, pH, inoculum size. At optimum conditions, bacterial strain demonstrated 94.52% 83.58% removal glyphosate, respectively. Both Central-composite design (CCD-RSM) ANN approaches proved to perform well in modeling optimizing growth conditions. ANN-GA model resulted R2 ≥ 0.99 for while case RSM, obtained value was 0.96 0.95, Results indicated that significantly (p < 0.05) biodegradation. Moreover, predicted RSM had a "lack fit p-value" "0.8849" "0.2502" GC-MS analysis revealed first converted into 3,5,6-trichloro pyridin-2-ol & O, O-diethyl O-hydrogen phosphorothiate. Later, these intermediate metabolites broken completely mineralized non-toxic by-products. Similarly, 2-(methylamino) acetic acid amino-oxyphosphonic acid, further without any toxic Taken together, results this clarify biodegradation pathways highlights promising B. 3-1 bioremediation glyphosate-polluted environments.

Language: Английский

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Rapid Biodegradation of the Organophosphorus Insecticide Acephate by a Novel Strain Burkholderia sp. A11 and Its Impact on the Structure of the Indigenous Microbial Community

Journal of Agricultural and Food Chemistry, Journal Year: 2023, Volume and Issue: 71(13), P. 5261 - 5274

Published: March 24, 2023

The acephate-degrading microbes that are currently available not optimal. In this study, Burkholderia sp. A11, an efficient degrader of acephate, presented acephate-removal efficiency 83.36% within 56 h (100 mg·L–1). A11 strain has a broad substrate tolerance and presents good removal effect in the concentration range 10–1600 mg·L–1. Six metabolites from degradation acephate were identified, among which main products methamidophos, acetamide, acetic acid, methanethiol, dimethyl disulfide. pathways involved include amide bond breaking phosphate hydrolysis. Moreover, successfully colonized substantially accelerated different soils, degrading over 90% (50–200 mg·kg–1) 120 h. 16S rDNA sequencing results further confirmed gradually occupied dominant position soil microbial communities, causing slight changes diversity composition indigenous community structure.

Language: Английский

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High-efficiency degradation of methomyl by the novel bacterial consortium MF0904: Performance, structural analysis, metabolic pathways, and environmental bioremediation

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 452, P. 131287 - 131287

Published: March 24, 2023

Language: Английский

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Occurrence and potential harms of organochlorine pesticides (OCPs) in environment and their removal by periphyton

Critical Reviews in Environmental Science and Technology, Journal Year: 2023, Volume and Issue: 53(22), P. 1957 - 1981

Published: April 8, 2023

Organochlorine pesticides (OCPs) have been widely used around the world due to their high-efficiency and broad-spectrum insecticidal effects. However, they pose a severe threat ecosystems human health easy bioaccumulation high toxicity. Periphyton is ubiquitous in submerged substrates surface. It plays crucial role carbon, nutrients elements cycling contaminants transformation environment. can remove OCPs through bioadsorption, biodegradation, which alters fate of This review presents comprehensive summary occurrence, global cycle, potential harm environment, removal by periphyton. The residual detected frequently different environmental medias such as water, soil, atmosphere, sediment, organisms. Their depending on physicochemical properties exposure route. main compositions functions periphyton summarized. Moreover, artificial cultivation methods laboratory in-situ field are compared. In addition, mechanisms periphyton-mediated factors impacting also discussed. could self-regulate its biological communities adapt then regenerate new species degrade OCPs. Finally, prospect future studies proposed. provides systematic introduction current knowledge

Language: Английский

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Optimization and elucidation of organophosphorus and pyrethroid degradation pathways by a novel bacterial consortium C3 using RSM and GC-MS-based metabolomics

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2023, Volume and Issue: 144, P. 104744 - 104744

Published: Feb. 16, 2023

Language: Английский

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Mechanism and kinetics of chlorpyrifos co-metabolism by using environment restoring microbes isolated from rhizosphere of horticultural crops under subtropics

Frontiers in Microbiology, Journal Year: 2022, Volume and Issue: 13

Published: July 26, 2022

The indiscriminate use of organophosphate insecticide chlorpyrifos in agricultural crops causes significant soil and water pollution poses a serious threat to the global community. In this study, microbial consortium ERM C-1 containing bacterial strains Pseudomonas putida T7, aeruginosa M2, Klebsiella pneumoniae M6, fungal strain Aspergillus terreus TF1 was developed for effective degradation chlorpyrifos. Results revealed that were not only utilizing (500 mg L –1 ) but also coupled with plant growth-promoting characteristics laccase production. PGP traits, is, IAA (35.53, 45.53, 25.19, 25.53 μg mL ), HCN (19.85, 17.85, 12.18, 9.85 ammonium (14.73, 16.73, 8.05, 10.87 production, potassium (49.53, 66.72, 46.14, 52.72 phosphate (52.37, 63.89, 33.33, 71.89 zinc (29.75, 49.75, 49.12, 57.75 solubilization tests positive TF1, respectively. activity by estimated as 37.53, 57.16, 87.57 enzyme U after 5, 10, 15 days incubation, Chlorpyrifos associated activity, degree higher than individual strains. biodegradation study showed decreased concentration from 7th day incubation (65.77% degradation) followed complete disappearance (100% 30th MS medium. First-order kinetics linear model high k –day value low t 1/2 C-1. results HPLC GC-MS analysis proved capable completely removing co-metabolism mechanism.

Language: Английский

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Biochar aerogel enhanced remediation performances for heavy oil-contaminated soil through biostimulation strategy

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 443, P. 130209 - 130209

Published: Oct. 18, 2022

Language: Английский

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