The impact of municipal sewage sludge stabilization processes on the abundance, field persistence, and transmission of antibiotic resistant bacteria and antibiotic resistance genes to vegetables at harvest

2019 ◽  
Vol 651 ◽  
pp. 1680-1687 ◽  
Author(s):  
Roger Murray ◽  
Yuan-Ching Tien ◽  
Andrew Scott ◽  
Edward Topp
Keyword(s):  
Antibiotic Resistance ◽  
Sewage Sludge ◽  
Resistance Genes ◽  
Antibiotic Resistance Genes ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Resistant Bacteria ◽  
Antibiotic Resistant ◽  
Sludge Stabilization ◽  
The Impact

scholarly journals Accumulation and expression of multiple antibiotic resistance genes in Arcobacter cryaerophilus that thrives in sewage

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3269 ◽  
Author(s):  
Jess A. Millar ◽  
Rahul Raghavan
Keyword(s):  
Antibiotic Resistance ◽  
Wastewater Treatment ◽  
Resistance Genes ◽  
Treatment Plant ◽  
Antibiotic Resistance Genes ◽  
Environmental Water ◽  
Multidrug Resistant ◽  
Municipal Sewage ◽  
Animal Origin ◽  
Resistant Bacteria

We explored the bacterial diversity of untreated sewage influent samples of a wastewater treatment plant in Tucson, AZ and discovered that Arcobacter cryaerophilus, an emerging human pathogen of animal origin, was the most dominant bacterium. The other highly prevalent bacteria were members of the phyla Bacteroidetes and Firmicutes, which are major constituents of human gut microbiome, indicating that bacteria of human and animal origin intermingle in sewage. By assembling a near-complete genome of A. cryaerophilus, we show that the bacterium has accumulated a large number of antibiotic resistance genes (ARGs) probably enabling it to thrive in the wastewater. We also determined that a majority of ARGs was being expressed in sewage, suggestive of trace levels of antibiotics or other stresses that could act as a selective force that amplifies multidrug resistant bacteria in municipal sewage. Because all bacteria are not eliminated even after several rounds of wastewater treatment, ARGs in sewage could affect public health due to their potential to contaminate environmental water.

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