2016
DOI: 10.1016/j.scitotenv.2016.03.154
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Ozone treatment of conditioned wastewater selects antibiotic resistance genes, opportunistic bacteria, and induce strong population shifts

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Cited by 227 publications
(131 citation statements)
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“…Some opportunistic pathogens are highly adaptable to stress situation and are able to activate effective stress responses to survive adverse growth conditions (nutrient limitation, low temperatures, etc. ; Alexander et al, 2015, 2016). Hence, these microorganisms are able to persist in uncomfortable situation and will not die.…”
Section: Discussionmentioning
confidence: 99%
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“…Some opportunistic pathogens are highly adaptable to stress situation and are able to activate effective stress responses to survive adverse growth conditions (nutrient limitation, low temperatures, etc. ; Alexander et al, 2015, 2016). Hence, these microorganisms are able to persist in uncomfortable situation and will not die.…”
Section: Discussionmentioning
confidence: 99%
“…Using these curves, the measured Ct values of the mcr-1 gene, the 16S ribosomal RNA gene or the taxon-specific gene markers from water samples can be used for copy number calculations (Alexander et al, 2015, 2016). The abundances of antibiotic resistance genes (ARGs) and opportunistic bacteria were quantified in each water sample and normalized to 100 ng total extracted DNA (cell equivalents per 100 ng DNA).…”
Section: Methodsmentioning
confidence: 99%
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“…However, other research has observed higher survival rates of resistant strains compared to sensitive bacteria, selection of ARGs, and shifts in bacterial population in the effluent after advanced treatments (Lüddeke et al, 2015;McKinney and Pruden, 2012;Alexander et al, 2016;Hu et al, 2016). Variations in reports on the efficiency of advanced approaches to wastewater treatment in controlling AR may be due to underestimates of the roles of variable operating conditions.…”
mentioning
confidence: 99%
“…For E. coli and some ozone tolerant bacteria, intracellular genes were disrupted at specific ozone doses. However, the study concluded that ozone doses commonly used for elimination of micro-pollutants from wastewater do not always remove intracellular ARGs.Impact of ozone on ARBs and ARGs wasinvestigated in an ARG abundance study(Alexander et al, 2016). A concentration of 1 g ozone per 1 g DOC was utilized to treat clarified wastewater.…”
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confidence: 99%