The influence of oxytetracycline on the degradation and enantioselectivity of the chiral pesticide beta-cypermethrin in soil. (December 2019)

• Record Type: Journal Article
• Authors: Jiang, Wenqi; Gao, Jing; Cheng, Zheng; Zhai, Wangjing; Liu, Donghui; Zhou, Zhiqiang; Wang, Peng
• Is Part Of: Environmental pollution. Volume 255(2019)Part 1
• Publication Date: 2019-12
• Subjects: OTC Oxytetracycline -- cis/trans-DCCA cis/trans-3-(2, 2-dichloroethenyl-2, 2-dimethylcyclopropanecarboxylic acid -- 3-PBA 3-phenoxybenzoic acid -- beta-CP beta-cypermethrin -- ACP alpha-cypermethrin -- TCP theta-cypermethrin -- CK control check; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2019.113215
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: Pesticide residues most likely coexist with antibiotics due to the application of animal-based fertilizers in agriculture. In this study, the degradation and enantioselectivity of beta-cypermethrin in soil and chicken manure-amended soil were investigated. The effects of oxytetracycline on the soil microbial community were also estimated. The results showed that the half-life of beta-cypermethrin in the soil was 16.9 days and that the (+)-enantiomer was degraded preferentially in both pairs of enantiomers. The metabolites cis/trans-DCCA(3-(2′, 2′-dichlorovinyl)-2, 2-dimethylcyclopropane carboxylic acid) and 3-PBA (3-Phenoxybenzoic acid) were detected. The trans-DCCA concentrations ranged from 0.094 to 0.120 mg/kg, which were higher than the concentrations of cis-DCCA (0.091–0.120 mg/kg) and 3-PBA (0.022–0.061 mg/kg). In the presence of oxytetracycline, beta-cypermethrin degradation was inhibited slightly, while the enantioselectivity was not affected. Oxytetracycline increased the enrichment and persistence of the metabolites. Addition of chicken manure decreased the cis-DCCA residue levels in the soil and alleviated the effect of oxytetracycline; however, chicken manure increased the accumulation and persistence of 3-PBA. In addition, oxytetracycline perturbed the structure of the soil microbial community. The abundance of Proteobacteria increased, while the abundances of Firmicutes and Actinobacteria decreased. These changes might affect the biodegradation of beta-cypermethrin and its metabolites. Combined pollution with antibiotics should be considered for its potential impact on pesticide residues. Graphical abstract: Image 1 Highlights: Oxytetracycline (OTC) slowed the degradation of beta-cypermethrin (CP). OTC did not change the enantioselectivity beta-CP. OTC enhance the residue level and the persistence of the metabolites. Microbial community alteration might affect the fate of beta-CP and the metabolites. Abstract : oxytetracycline increase the persistence of beta-cypermethrin and its metabolites, but it doesn't affect the chiral selectivity in soil.