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Hydrometeorological Influence on Antibiotic-Resistance Genes (ARGs) and Bacterial Community at a Recreational Beach in Korea.

Authors
  • Jang, Jiyi1
  • Kim, Minjeong2
  • Baek, Sangsoo1
  • Shin, Jingyeong3
  • Shin, Juhee4
  • Shin, Seung Gu4
  • Kim, Young Mo3
  • Cho, Kyung Hwa5
  • 1 School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, 50, UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, 44919, Republic of Korea. , (North Korea)
  • 2 Korea Atomic Energy Research Institute, 111, Daedeok-daero 989beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea. , (North Korea)
  • 3 Department of Civil and Environmental Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea. , (North Korea)
  • 4 Department of Energy Engineering, Future Convergence Technology Research Institute, Gyeongnam National University of Science and Technology, 6, Naedong-ro 139beon-gil, Naedong-myeon, Jinju, 52725, Republic of Korea. , (North Korea)
  • 5 School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, 50, UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan, 44919, Republic of Korea. Electronic address: [email protected] , (North Korea)
Type
Published Article
Journal
Journal of hazardous materials
Publication Date
Aug 02, 2020
Volume
403
Pages
123599–123599
Identifiers
DOI: 10.1016/j.jhazmat.2020.123599
PMID: 32791479
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

We investigated the occurrence and distribution of antibiotic-resistance genes (ARGs) and the composition of a bacterial community under conditions of rainfall on a recreational beach in Korea. Seawater samples, collected every 1‒5 hours in June 2018 and May 2019, were analyzed using quantitative real-time polymerase chain reaction and next-generation sequencing. We found a substantial influence of rainfall and tidal levels on the relative abundance of total ARGs and bacterial operational taxonomic units (OTUs), which showed 1.9 × 103 and 1.1 × 101 fold increases, respectively. In particular, the elevated levels of ARGs were maintained for up to 32 hours after rainfall. An increased abundance of sewage-related ARGs and bacterial OTUs suggested that combined sewer overflow (CSO) may be the major factor contributing to the increase in the number and diversity of ARGs and related bacterial communities. Network analysis of ARGs and OTUs indicated that, at the genus level, Acinetobacter, Pseudomonas, and Prevotella were the main potential pathogens carrying the observed ARGs in the recreational seawater. Overall, these findings highlight the potential threat to public health on beaches, and indicate the requirement for more adequate monitoring, with greater efforts to mitigate the propagation of ARGs arising from CSOs. Copyright © 2020 Elsevier B.V. All rights reserved.

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