Biodegradation of the Pyrethroid Pesticide Esfenvalerate by a Bacterial Consortium Isolated from Brazilian Savannah

Abstract

New biocatalysts for bioremediation techniques are necessary nowadays. Therefore, a bacterial consortium isolated from Brazilian Savannah was employed for biodegradation of 100 mg L −1 esfenvalerate in liquid culture medium. The bacterial consortium (Lysinibacillus xylanilyticus CBMAI2085, Bacillus cereus CBMAI2067, Lysinibacillus sp. CBMAI2051 and Bacillus sp. CBMAI2052) biodegraded this pyrethroid efficiently. The assays were conducted in triplicate, and after 12 days, 90% of the pesticide was degraded producing 3-phenoxybenzoic acid (35.0 ± 3.1 mg L −1 ) and 2-(4-chlorophenyl)-3-methylbutanoic acid (34.0 ± 2.8 mg L −1 ). The bacterial consortium (52 ± 5% biodegradation) was more efficient in the biodegradation than the average of the same strains solely employed (40 ± 7% biodegradation), showing that the use of consortia is an interesting approach. However, the strain Bacillus cereus CBMAI2067 (67 ± 3% biodegradation) was more efficient than the bacterial consortium, showing its potential as source of carboxylesterases and proving that, in this case, the use of a unique efficient strain is more adequate.

Evaluate the Toxicity of Pyrethroid Insecticide Cypermethrin before and after Biodegradation by Lysinibacillus cresolivuorans Strain HIS7

“…Recently, a bacterial consortium consisting of Lysinibacillus xylanilyticus , Bacillus cereus , Lysinibacillus sp., and Bacillus sp. was used for Esfenvalerate insecticide degradation [ 29 ]. To the best of our knowledge, this is the first report for biodegradation of Pyrethroid insecticide cypermethrin by Lysinibacillus cresolivorans .…”

Isolation, Characterization and Screening of Potential Lambda-Cyhalothrin-Degrading Bacteria from Cultivated Soil in Moro, Kwara State, Nigeria

“…A co-culture of Acinetobacter juniiLH-1-1 and Klebsiella pneumoniae BPBA052 was used to degrade deltamethrin [29]. Anjos [30] also recognized that Lysinibacillusxylanilyticuswas able to degrade synthetic pyrethroids while Onuorah [20], had indicated that Pseudomonas putida, Lysinibacillus macrolides and Klebsiella pneumoniae were able to degrade lambda-cyhalothrin and dichlorvos. Recently, an esterase enzyme EstGS1 from a halophilic actinobacteria Glycomycessalinus effectively hydrolyzed deltamethrin, lambda-cyhalothrin, fenvalerate and permethrin in four hours [9].…”

Biodegradation Pathway and Detoxification of β-cyfluthrin by the Bacterial Consortium and Its Bacterial Community Structure

“…Although the molecule is advantageous due to its high efficiency and low toxicity, it has slow degradation kinetics and good photothermal stability, and it will not degrade quickly under natural conditions. As the molecules have a strong adsorption affinity, they remain in the environment in large quantities and are harmful to plants and small organisms. , Therefore, the removal of β-cyfluthrin residues from the environment is an important research focus of environmental remediation. − …”