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Does anaerobic condition play a more positive role in dissipation of antibiotic resistance genes in soil? | LitMetric

Does anaerobic condition play a more positive role in dissipation of antibiotic resistance genes in soil?

Sci Total Environ

Department of Plant, Soil and Microbial Sciences, Michigan State University, MI 48824, USA; Center for Microbial Ecology, Michigan State University, MI 48824, USA.

Published: February 2021

AI Article Synopsis

Article Abstract

The persistence of antibiotic resistance genes (ARGs) under the aerobic vs. anaerobic conditions is unknown, especially under different fertilization. Towards this goal, a microcosm experiment was carried out with chemical fertilized and manured soil under aerobic and anaerobic conditions. High throughput qPCR was used to analyze ARGs with 144 primer sets and sequencing for microorganisms. Completely different dynamics of ARGs were observed in soil under aerobic and anaerobic conditions, regardless of the fertilization type. ARGs had different half-lives, even though they confer resistance to the same type of antibiotics. Aminoglycoside, chloramphenicol, macrolide - lincosamide - streptogramin B (MLSB) and tetracycline resistance genes were significantly accumulated in the aerobic soils. Anaerobic soil possessed a higher harboring capacity for exogenous microorganisms and ARGs than aerobic soil. The interaction between ARGs and mobile genetic elements (MGEs) in manured soil under aerobic condition was more pronounced than the anaerobic condition. These findings unveil that anaerobic soil could play a more positive role in reducing potential risk of ARGs in the farmland environment.

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Source
http://dx.doi.org/10.1016/j.scitotenv.2020.143737DOI Listing

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