BIO Web Conf.
Volume 59, 20232023 5th International Conference on Biotechnology and Biomedicine (ICBB 2023)
|Number of page(s)||4|
|Section||Biotechnology and Cell Structure Analysis|
|Published online||08 May 2023|
Chlorpyrifos And Chlorpyrifos-methyl Can Promote Conjugative Transfer of Antibiotic Resistance Genes
Institute of Coastal Environmental Pollution Control, Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
Antibiotic misuse induces the production of antibiotic resistance genes (ARGs), leading to the global spread of antimicrobial resistance (AMR), which poses a major threat to human health. Conjugative transfer, as the main process of ARGs propagation, is sensitively influenced by coexisting contaminants. Chlorpyrifos and chlorpyrifos-methyl, as organophosphorus insecticides widely used in agriculture, have been shown to induce cytotoxicity such as elevated levels of reactive oxygen radicals (ROS) and lipid peroxidation. This is similar to the mechanism by which antibiotics promote the conjugative transfer of ARGs, based on which we hypothesized that chlorpyrifos and chlorpyrifos-methyl could promote conjugative transfer. However, the effect of chlorpyrifos and chlorpyrifos-methyl on conjugative transfer is unclear. Therefore, we constructed RP4 plasmid-mediated conjugation system and confirmed that chlorpyrifos and chlorpyrifos-methyl can promote conjugative transfer by inducing oxidative stress in donor and recipient bacteria. Our research reveals the risk of ARM spread in organophosphorus insecticides and ARGs co-contaminated environments.
© The Authors, published by EDP Sciences, 2023
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