PesticideLambda-Cyhalothrin DegradationUsingMesorhizobium sp.(S1b) andBartonella sp.(S2b)StrainsIsolated from Cotton Crop

Kanhar, Nisar Ahmed

doi:10.21743/pjaec/2017.12.11

Cited by 4 publications

(5 citation statements)

References 20 publications

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“…Experiments conducted in the absence of a catalyst exposing L-CHT solutions to UV irradiation did not show an appreciable abatement of the pesticide (<10%) within 180 min of irradiation. This result suggests that L-CHT has high photostability, which is in agreement with its recalcitrant character and presence in natural conditions in rivers and lakes [49,51]. Experiments conducted in the dark but in the presence of 2 mg L −1 semiconductor nanoparticle showed the discrete abatement of L-CHT of 17% for CuO and 11% for NiO after 180 min.…”

Section: Evaluating the Photocatalytic Activity Of Phyto-synthesized Nanoparticlessupporting

confidence: 78%

“…Lambda-cyhalothrin (L-CHT) is a type II pyrethroid insecticide used in agriculture, horticulture, forestry, and households to control pests and insects. Unfortunately, the widespread use of cyhalothrin in Pakistan has resulted in severe environmental pollution [48][49][50]. Several reports have shown that it is abundantly present in water resources [51][52][53] and it is susceptible to entering the trophic chain [54].…”

Section: Introductionmentioning

confidence: 99%

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Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

et al. 2021

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Green manufacturing of catalysts enables sustainable advanced oxidation processes and water treatment processes for removing trace contaminants such as pesticides. An environmentally friendly biosynthesis process produced high-surface-area CuO and NiO nanocatalysts using phytochemicals in the Capparis decidua leaf extract, which served as a reductant and influenced catalyst shape. Capparis decidua is a bushy shrub, widely distributed in dry and arid regions of Africa, Pakistan, India, Egypt, Jordan, Sudan, Saudi Arabia. The synthesized CuO and NiO nanoparticles were characterized by UV-vis spectroscopy (UV-vis), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) and thermo-gravimetric analysis/differential thermal analysis (TGA/DTA). The produced nanoparticles were spherical and flower-like in shape and have a characteristic face-centered cubic structure of CuO and NiO. Biosynthesized catalysts were photoactive and degraded recalcitrant pesticide Lambda-cyhalothrin (L-CHT). Photocatalytic degradation of L-CHT was affected by the initial L-CHT concentration, solution pH levels between 5 and 9, and photocatalyst concentration. The L-CHT removal percentage attained by CuO photocatalyst (~99%) was higher than for NiO photocatalyst (~89%). The degradation of L-CHT follows a pseudo-first-order kinetic model, and the apparent rate constant (kapp) decreased from 0.033 min−1 for CuO to 0.0084 min−1 for NiO photocatalyst. The novel flower-shaped nanoparticles demonstrated high stability in water and recyclability for removing L-CHT pesticide contamination in water.

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Section: Evaluating the Photocatalytic Activity Of Phyto-synthesized Nanoparticlessupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

et al. 2021

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“…Generally, biocatalysts have been isolated from different sources for pyrethroids biodegradation, and their ability to grow using these xenobiotics as sole carbon source was explored. ,, In the present study, only B. thuringiensis Berliner was evaluated because of its proven insecticidal activity and its relative safety for non-target species.…”

Section: Resultsmentioning

confidence: 99%

“…Optimization of Biodegradation by Experimental Design 2 3 with Central Point in Triplicate for Response Surface Methodology. An experimental design, 2 3 , with central point in triplicate experiments was carried out with initial Cyp concentration (50, 100, and 150 mg•L −1 ), temperature (30,35, and 40 °C), and pH of the medium (5.5, 7.0, 8.5) as independent factors in a nutrient liquid medium (Table 2). Significant biodegradation of Cyp was observed in all of the experiments, corresponding to 60.5− 91.6% pesticide consumption and production of 11.4−30.8 mg•L −1 PBAcid, showing that B. thurigiensis Berliner biodegraded this pyrethroid under a wide range of conditions.…”

Section: Biodegradation Of Cyp In Liquidmentioning

confidence: 99%

New Role for a Commercially Available Bioinsecticide: Bacillus thuringiensis Berliner Biodegrades the Pyrethroid Cypermethrin

Birolli

Santos

Pilau

et al. 2021

Environ. Sci. Technol.

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The microbial diversity of several environments has been explored by researchers for the biodegradation of pyrethroids. In this study, a new approach was employed aiming at the use of Bacillus thuringiensis Berliner, a strain commercially available as bioinsecticide, for Cypermethrin (Cyp) biodegradation. This bacterial strain grew in the presence of Cyp and biodegraded this xenobiotic in a liquid medium. A central composite design for surface response methodology was employed for biodegradation. Under optimized conditions (50 mg•L −1 of Cyp, pH 8.5, 37 °C), 83.5% biodegradation was determined with the production of 12.0 ± 0.6 mg•L −1 3-phenoxybenzoic acid after 5 days. Moreover, a biodegradation pathway with the 18 compounds identified by GC-MS and LC-MS/MS was proposed. Experiments in soil for 28 days at 30 °C were performed, and 16.7% Cyp degradation was determined under abiotic conditions, whereas 36.6 ± 1.9% biodegradation was observed for B. thuringiensis Berliner with the native microbiome, indicating that bioaugmentation with this strain promoted a significant increase in the Cyp decontamination. Therefore, B. thuringiensis Berliner can act as biodegrader agent and insecticide at the same time, promoting decontamination of chemicals as Cyp while maintaining the protection of crops against insects. Moreover, B. thuringiensis species can produce bacteriocins with antifungal activity, which may increase agricultural productivity.

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“…The isolation of λ-cyhalothrin degrading bacteria from agriculture area previously sprayed with λ-cyhalothrin was effective to obtain 43 bacterial isolates by the enrichment technique. Some studies reported the isolation of microorganisms capable of degrading λ-cyhalothrin with the same technique from contaminated sites and agricultural fields (Akbar et al 2015 ; Chumro et al 2017 ; Zhang et al 2019 ). It was reported that initial concentration of λ-cyhalothrin in the cultural media increase the lag phase of the pesticide degradation thereby decrease bacterial growth rate (Jilani and Altaf Khan 2006 ; Tian et al 2018 ; Hu et al 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Simultaneous biodegradation of λ-cyhalothrin pesticide and Vicia faba growth promotion under greenhouse conditions

2022

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Abstractλ-cyhalothrin is a widely used synthetic pyrethroid insecticide and its persistence in plant, soil and water exerts a detrimental effect on humans as well as the environment. There are many studies regarding isolated bacteria capable of degrading λ-cyhalothrin in vitro. However, limited work has been done examining the microbial degradation of λ-cyhalothrin together with plant growth promotion under greenhouse conditions. In this study, 43 bacterial strains were isolated from heavily polluted soil with λ-cyhalothrin by the enrichment technique. The plant growth promotion characteristics of all isolates were evaluated. The results revealed that five isolates were potential in λ-cyhalothrin biodegradation at high concentration (1200 mg/L) within only 24 h together with their high plant growth promotion abilities. The morphological, biochemical and 16S rDNA sequence analyses identified the isolates as Bacillus subtilis strains. The GC/MS analysis revealed that the selected isolates reached high levels of degradation after only two days, the degradation percentage ranged from 95.72 to 99.52% after 48 h of incubation. Furthermore, the degradation pathway for complete detoxification and metabolism of λ-cyhalothrin was established. Moreover, greenhouse experiment was conducted, the results indicate that the application of seed coat significantly enhanced Vicia faba seedling growth and caused an increase from 38.4 to 40.2% percentage of fresh and dry weight, respectively compared to untreated control. All isolates were effective to remove the pesticide residues in Vicia faba seedlings and recorded the highest degradation percentage of 83.79 under greenhouse conditions. Therefore, it can be concluded that the Bacillus subtilis strains isolated in this study have a dual potential role in complete mineralization of λ-cyhalothrin residues in vivo as well as effective biofertilization for future use in sustainable agriculture.

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PesticideLambda-Cyhalothrin DegradationUsingMesorhizobium sp.(S1b) andBartonella sp.(S2b)StrainsIsolated from Cotton Crop

Cited by 4 publications

References 20 publications

Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

New Role for a Commercially Available Bioinsecticide: Bacillus thuringiensis Berliner Biodegrades the Pyrethroid Cypermethrin

Simultaneous biodegradation of λ-cyhalothrin pesticide and Vicia faba growth promotion under greenhouse conditions

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