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Title: Biofilms as a sink for antibiotic resistance genes (ARGs) in the Yangtze Estuary

Abstract

Biofilms are ubiquitous throughout aquatic environments and they are thought to promote the acquisition and dissemination of antibiotic resistant genes (ARGs). This study focused on the occurrence and distribution of five types of ARG in naturally-occurring biofilms, in comparison to associated sediment and water samples, from the Yangtze Estuary, which borders the meta-city of Shanghai, China. The detection frequency and abundances of most ARGs showed the following order: biofilm > sediment > water, which can be attributed to a high level of antibiotics and metals that can accelerate the generation and propagation of ARGs in biofilms. Most of ARG abundances were contributed by extracellular DNA (eDNA) in biofilm and sediment samples. ARGs (sul1, sul2, tetAandtetW) in eDNA were significantly correlated with TOC in both biofilm and sediment samples. Furthermore, both intracellular DNA-associated ARGs per gram of microbial biomass carbon (MBC) and eDNA-associated ARGs per gram of non-MBC and were higher in biofilms than sediments, and the partitioning coefficients of ARGs in eDNA between biofilm and water were higher than those between sediment and water. Our results provide new insight for evaluating the occurrence and abundance of ARGs in aquatic environments, confirming that biofilms are a significant sink for ARGs inmore » the estuarine environment.« less

Authors:
; ORCiD logo; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438986
Report Number(s):
PNNL-SA-130868
Journal ID: ISSN 0043-1354
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Water Research; Journal Volume: 129; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
Biofilms; Antibiotic resistance genes; Yangtze Estuary

Citation Formats

Guo, Xing-pan, Yang, Yi, Lu, Da-pei, Niu, Zuo-shun, Feng, Jing-nan, Chen, Yu-ru, Tou, Fei-yun, Garner, Emily, Xu, Jiang, Liu, Min, and Hochella, Michael F. Biofilms as a sink for antibiotic resistance genes (ARGs) in the Yangtze Estuary. United States: N. p., 2018. Web. doi:10.1016/j.watres.2017.11.029.
Guo, Xing-pan, Yang, Yi, Lu, Da-pei, Niu, Zuo-shun, Feng, Jing-nan, Chen, Yu-ru, Tou, Fei-yun, Garner, Emily, Xu, Jiang, Liu, Min, & Hochella, Michael F. Biofilms as a sink for antibiotic resistance genes (ARGs) in the Yangtze Estuary. United States. doi:10.1016/j.watres.2017.11.029.
Guo, Xing-pan, Yang, Yi, Lu, Da-pei, Niu, Zuo-shun, Feng, Jing-nan, Chen, Yu-ru, Tou, Fei-yun, Garner, Emily, Xu, Jiang, Liu, Min, and Hochella, Michael F. Thu . "Biofilms as a sink for antibiotic resistance genes (ARGs) in the Yangtze Estuary". United States. doi:10.1016/j.watres.2017.11.029.
@article{osti_1438986,
title = {Biofilms as a sink for antibiotic resistance genes (ARGs) in the Yangtze Estuary},
author = {Guo, Xing-pan and Yang, Yi and Lu, Da-pei and Niu, Zuo-shun and Feng, Jing-nan and Chen, Yu-ru and Tou, Fei-yun and Garner, Emily and Xu, Jiang and Liu, Min and Hochella, Michael F.},
abstractNote = {Biofilms are ubiquitous throughout aquatic environments and they are thought to promote the acquisition and dissemination of antibiotic resistant genes (ARGs). This study focused on the occurrence and distribution of five types of ARG in naturally-occurring biofilms, in comparison to associated sediment and water samples, from the Yangtze Estuary, which borders the meta-city of Shanghai, China. The detection frequency and abundances of most ARGs showed the following order: biofilm > sediment > water, which can be attributed to a high level of antibiotics and metals that can accelerate the generation and propagation of ARGs in biofilms. Most of ARG abundances were contributed by extracellular DNA (eDNA) in biofilm and sediment samples. ARGs (sul1, sul2, tetAandtetW) in eDNA were significantly correlated with TOC in both biofilm and sediment samples. Furthermore, both intracellular DNA-associated ARGs per gram of microbial biomass carbon (MBC) and eDNA-associated ARGs per gram of non-MBC and were higher in biofilms than sediments, and the partitioning coefficients of ARGs in eDNA between biofilm and water were higher than those between sediment and water. Our results provide new insight for evaluating the occurrence and abundance of ARGs in aquatic environments, confirming that biofilms are a significant sink for ARGs in the estuarine environment.},
doi = {10.1016/j.watres.2017.11.029},
journal = {Water Research},
number = C,
volume = 129,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2018},
month = {Thu Feb 01 00:00:00 EST 2018}
}