Selective antibiotic resistance genes in multiphase samples during biofilm growth in a simulated drinking water distribution system: Occurrence, correlation and low-pressure ultraviolet removal

The Science of the Total Environment
Minglu ZhangCan Zhang

Abstract

The aim of this study was to gain comprehensive insights into the characteristics of antibiotic resistance genes (ARGs) in multiphase samples from drinking water distribution pipelines using a simulated biofilm reactor. During 120 d of continuous operation, common parameters and six ARGs (ermA, ermB, aphA2, ampC, sulII, and tetO) in samples of three phases (water, particle, and biofilm) from the reactor were investigated, which demonstrated secondary contamination by ARGs. Abundances of the six ARGs in the reactor effluent increased gradually, and in the 120 d effluent, the relative abundances of aphA2 and sulII were the highest, at 9.9 × 10-4 and 1.3 × 10-3, respectively, with a 1.5-fold and 2.8-fold increase, compared with those in the influent. The relative abundances of the six ARGs in the biofilm phase increased significantly (P < 0.05) at 120 d, which was caused by robust bacteria in biofilm that was newly exposed following the detachment of a large piece of aging biofilm. In the particle phase, four of the ARGs did not change significantly during the 120 d period. The six ARGs in the samples of three phases showed a negative correlation with residual chlorine in the pipe water, which demonstrated that low abundance of AR...Continue Reading

References

Nov 7, 2002·Water Research·Rasmus Boe-HansenClaus Jørgensen
Jan 24, 2007·Water Research·Eric A AuerbachKatherine D McMahon
Nov 17, 2007·Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases·H-W LeeJ Kim
Mar 28, 2009·The Science of the Total Environment·Cátia FariaCélia M Manaia
Jul 8, 2009·Applied and Environmental Microbiology·Chuanwu XiJerome Nriagu
Apr 9, 2010·Journal of Water and Health·Wei FangSay Leong Ong
Dec 3, 2013·Trends in Microbiology·Elisabet MartiJose Luis Balcazar
Jan 13, 2015·Current Opinion in Biotechnology·Caitlin R Proctor, Frederik Hammes
Jul 28, 2016·The Science of the Total Environment·Maria Laura LupranoCaterina Levantesi
Jan 25, 2017·Journal of Environmental Sciences (China)·Cuiping LiWenjun Liu

❮ Previous
Next ❯

Citations

Mar 7, 2020·Frontiers of Environmental Science & Engineering·Virender K SharmaMingbao Feng
Mar 22, 2020·International Journal of Environmental Research and Public Health·Minglu ZhangHe Zhou
May 15, 2021·Journal of Environmental Sciences (China)·Tuqiao ZhangXiaowei Liu
Jun 18, 2021·Environmental Science and Pollution Research International·Fu-Yi HuangShu-Yi-Dan Zhou

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.

Biofilms

Biofilms are adherent bacterial communities embedded in a polymer matrix and can cause persistent human infections that are highly resistant to antibiotics. Discover the latest research on Biofilms here.