Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.

Antibiotic resistance genes (ARGs) are emerging contaminants causing serious global health concern. Interventions to address this concern include improving our understanding of methods for treating waste material of human and animal origin that are known to harbor ARGs. Anaerobic digestion is a comm...

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Autores principales: Yi Wang, Pramod K Pandey, Sundaram Kuppu, Richard Pereira, Sharif Aly, Ruihong Zhang
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Publicado: Public Library of Science (PLoS) 2021
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spelling oai:doaj.org-article:0bec752c2a0f4936974751af6cebb0282021-12-02T20:17:36ZDegradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.1932-620310.1371/journal.pone.0254836https://doaj.org/article/0bec752c2a0f4936974751af6cebb0282021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0254836https://doaj.org/toc/1932-6203Antibiotic resistance genes (ARGs) are emerging contaminants causing serious global health concern. Interventions to address this concern include improving our understanding of methods for treating waste material of human and animal origin that are known to harbor ARGs. Anaerobic digestion is a commonly used process for treating dairy manure, and although effective in reducing ARGs, its mechanism of action is not clear. In this study, we used three ARGs to conducted a longitudinal bench scale anaerobic digestion experiment with various temperatures (28, 36, 44, and 52°C) in triplicate using fresh dairy manure for 30 days to evaluate the reduction of gene abundance. Three ARGs and two mobile genetic elements (MGEs) were studied: sulfonamide resistance gene (sulII), tetracycline resistance genes (tetW), macrolide-lincosamide-streptogramin B (MLSB) superfamily resistance genes (ermF), class 1 integrase gene (intI1), and transposase gene (tnpA). Genes were quantified by real-time quantitative PCR. Results show that the thermophilic anaerobic digestion (52°C) significantly reduced (p < 0.05) the absolute abundance of sulII (95%), intI1 (95%), tnpA (77%) and 16S rRNA gene (76%) after 30 days of digestion. A modified Collins-Selleck model was used to fit the decay curve, and results suggest that the gene reduction during the startup phase of anaerobic digestion (first 5 days) was faster than the later stage, and reductions in the first five days were more than 50% for most genes.Yi WangPramod K PandeySundaram KuppuRichard PereiraSharif AlyRuihong ZhangPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0254836 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Yi Wang
Pramod K Pandey
Sundaram Kuppu
Richard Pereira
Sharif Aly
Ruihong Zhang
Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.
description Antibiotic resistance genes (ARGs) are emerging contaminants causing serious global health concern. Interventions to address this concern include improving our understanding of methods for treating waste material of human and animal origin that are known to harbor ARGs. Anaerobic digestion is a commonly used process for treating dairy manure, and although effective in reducing ARGs, its mechanism of action is not clear. In this study, we used three ARGs to conducted a longitudinal bench scale anaerobic digestion experiment with various temperatures (28, 36, 44, and 52°C) in triplicate using fresh dairy manure for 30 days to evaluate the reduction of gene abundance. Three ARGs and two mobile genetic elements (MGEs) were studied: sulfonamide resistance gene (sulII), tetracycline resistance genes (tetW), macrolide-lincosamide-streptogramin B (MLSB) superfamily resistance genes (ermF), class 1 integrase gene (intI1), and transposase gene (tnpA). Genes were quantified by real-time quantitative PCR. Results show that the thermophilic anaerobic digestion (52°C) significantly reduced (p < 0.05) the absolute abundance of sulII (95%), intI1 (95%), tnpA (77%) and 16S rRNA gene (76%) after 30 days of digestion. A modified Collins-Selleck model was used to fit the decay curve, and results suggest that the gene reduction during the startup phase of anaerobic digestion (first 5 days) was faster than the later stage, and reductions in the first five days were more than 50% for most genes.
format article
author Yi Wang
Pramod K Pandey
Sundaram Kuppu
Richard Pereira
Sharif Aly
Ruihong Zhang
author_facet Yi Wang
Pramod K Pandey
Sundaram Kuppu
Richard Pereira
Sharif Aly
Ruihong Zhang
author_sort Yi Wang
title Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.
title_short Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.
title_full Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.
title_fullStr Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.
title_full_unstemmed Degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.
title_sort degradation of antibiotic resistance genes and mobile gene elements in dairy manure anerobic digestion.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/0bec752c2a0f4936974751af6cebb028
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