Pesticide-tolerant microbial consortia: Potential candidates for remediation/clean-up of pesticide-contaminated agricultural soil

Shahid, Mohammad; Khan, Mohammad Saghir; Singh, Udai B.

doi:10.1016/j.envres.2023.116724

Cited by 25 publications

(9 citation statements)

References 215 publications

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“…DDT contaminants bind to microorganisms by a mechanism known as biosorption, which is independent of metabolism [94] . Some of this processes involved in microbial sorption include complexation, electrostatic interaction, ion exchange, physical and chemical adsorption, surface adsorption, diffusion, chelation, and microprecipitation [95] .…”

Section: Microbial Ddt Remediation Mechanismsmentioning

confidence: 99%

See 1 more Smart Citation

The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation

Ebsa,

Gizaw,

Admassie

et al. 2024

Biotechnology Reports

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Section: Microbial Ddt Remediation Mechanismsmentioning

confidence: 99%

“…pH has an effect on microbial DDT remediation because different microbial species have different optimal pH ranges. Soil pH can have a variety of effects on microbial DDT remediation [94] . At extreme pH, some microbial degradation processes are inhibited.…”

Section: Main Factors Affecting Microbial Ddt Remediationmentioning

confidence: 99%

The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation

Ebsa,

Gizaw,

Admassie

et al. 2024

Biotechnology Reports

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“…Beneficial rhizosphere soil microorganisms also known as ‘plant growth promoting rhizobacteria’ (PGPR) improves plant growth by producing an array of bioactive compounds, such as siderophores, organic acids, phytohormones, and hydrolytic enzymes in adverse environmental conditions like HM stress. − Interestingly, PGPR strains have evolved special resistance mechanisms, such as cell membrane modification, through the release of exopolysaccharides, an efflux pump, producing heat shock proteins and osmo-protective molecules, which enables them to persist under unfavorable environmental conditions …”

Section: Introductionmentioning

confidence: 99%

Trichoderma Inoculation Alleviates Cd and Pb-Induced Toxicity and Improves Growth and Physiology of Vigna radiata (L.)

Altaf,

Ilyas,

Shahid

et al. 2024

ACS Omega

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Heavy metals (HMs) pose a serious threat to agricultural productivity. Therefore, there is a need to find sustainable approaches to combat HM stressors in agriculture. In this study, we isolated Trichoderma sp. TF-13 from metal-polluted rhizospheric soil, which has the ability to resist 1600 and 1200 μg mL −1 cadmium (Cd) and lead (Pb), respectively. Owing to its remarkable metal tolerance, this fungal strain was applied for bioremediation of HMs in Vigna radiata (L.). Strain TF-13 produced siderophore, salicylic acid (SA; 43.4 μg mL −1 ) and 2,3-DHBA (21.0 μg mL −1 ), indole-3-acetic acid, ammonia, and ACC deaminase under HM stressed conditions. Increasing concentrations of tested HM ions caused severe reduction in overall growth of plants; however, Trichoderma sp. TF-13 inoculation significantly (p ≤ 0.05) increased the growth and physiological traits of HM-treated V. radiata. Interestingly, Trichoderma sp. TF-13 improved germination rate (10%), root length (26%), root biomass (32%), and vigor index (12%) of V. radiata grown under 25 μg Cd kg −1 soil. Additionally, Trichoderma inoculation showed a significant (p ≤ 0.05) increase in total chlorophyll, chl a, chl b, carotenoid content, root nitrogen (N), and root phosphorus (P) of 100 μg Cd kg −1 soil-treated plants over uninoculated treatment. Furthermore, enzymatic and nonenzymatic antioxidant activities of Trichoderma inoculated in metal-treated plants were improved. For instance, strain TF-13 increased proline (37%), lipid peroxidation (56%), catalase (35%), peroxidase (42%), superoxide dismutase (27%), and glutathione reductase (39%) activities in 100 μg Pb kg −1 soil-treated plants. The uptake of Pb and Cd in root/ shoot tissues was decreased by 34/39 and 47/38% in fungal-inoculated and 25 μg kg −1 soil-treated plants. Thus, this study demonstrates that stabilizing metal mobility in the rhizosphere through Trichoderma inoculation significantly reduced the detrimental effects of Cd and Pb toxicity in V. radiata and also enhanced development under HM stress conditions.

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“…AC is to be demethylated to eliminate the toxic intermediate metabolite cyanoimine (N–CN) . Few significant studies were reported on the degradation of emerging industrial environmental pollutants by the synthesized and EV-doped components, which was enhanced by the photocatalyst. − It has been earlier reported that the improved photocatalytic activity of zinc oxide enhanced the degradation of textile dye components (methylene blue) . In this study, the emerging agricultural pollutants NEOs including IM, CL, AC, and TH underwent EO, and further biodegradation was carried out.…”

Section: Introductionmentioning

confidence: 99%

Integrated Electrochemical Oxidation and Biodegradation for Remediation of a Neonicotinoid Insecticide Pollutant

Satheeshkumar,

Duraimurugan,

Parthipan

et al. 2024

ACS Omega

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A novel integrated electrochemical oxidation (EO) and bacterial degradation (BD) technique was employed for the remediation of the chloropyridinyl and chlorothiazolyl classes of neonicotinoid (NEO) insecticides in the environment. Imidacloprid (IM), clothianidin (CL), acetamiprid (AC), and thiamethoxam (TH) were chosen as the target NEOs. Pseudomonas oleovorans SA2, identified through 16S rRNA gene analysis, exhibited the potential for BD. In EO, for the selected NEOs, the total percentage of chemical oxygen demand (COD) was noted in a range of 58−69%, respectively. Subsequently, in the biodegradation of EO-treated NEOs (BEO) phase, a higher percentage (80%) of total organic carbon removal was achieved. The optimum concentration of NEOs was found to be 200 ppm (62%) for EO, while for BEO, the COD efficiency was increased up to 79%. Fourier-transform infrared spectroscopy confirms that the heterocyclic group and aromatic ring were degraded in the EO and further utilized by SA2. Gas chromatography−mass spectroscopy indicated up to 96% degradation of IM and other NEOs in BD (BEO) compared to that of EO (73%). New intermediate molecules such as silanediamine, 1,1-dimethyl-n,n'-diphenyl produced during the EO process served as carbon sources for bacterial growth and further mineralized. As a result, BEO enhanced the removal of NEOs with a higher efficiency of COD and a lower consumption of energy. The removal efficiency of the NEOs by the integrated approach was achieved in the order of AC > CL > IM > TH. This synergistic EO and BD approach holds promise for the efficient detoxification of NEOs from polluted environments.

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Pesticide-tolerant microbial consortia: Potential candidates for remediation/clean-up of pesticide-contaminated agricultural soil

Cited by 25 publications

References 215 publications

The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation

The role and mechanisms of microbes in dichlorodiphenyltrichloroethane (DDT) and its residues bioremediation

Trichoderma Inoculation Alleviates Cd and Pb-Induced Toxicity and Improves Growth and Physiology of Vigna radiata (L.)

Integrated Electrochemical Oxidation and Biodegradation for Remediation of a Neonicotinoid Insecticide Pollutant

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