Journal
ENVIRONMENTAL POLLUTION
Volume 206, Issue -, Pages 421-428Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2015.07.022
Keywords
Antibiotic resistance genes; Bioaccessible pollutants; Class 1 integron; Correlation
Categories
Funding
- Fundamental Research Funds for the Central Universities [KYZ201409, KJQN201517]
- National Natural Science Foundation of China [41401347, 41401254, 31470551, 41401345]
- Jiangsu Municipal Natural Science Foundation [BK20140723, BK20141050, BK20140755]
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences [SEPR2014-01]
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Co-contaminated soils by organic pollutants (Ups), antibiotics and antibiotic resistance genes (ARGs) have been becoming an emerging problem. However, it is unclear if an interaction exists between mixed pollutants and ARG abundance. Therefore, the potential relationship between OP contents and ARG and class 1 integron-integrase gene (intI1) abundance was investigated from seven dairy farms in Nanjing, Eastern China. Phenanthrene, pentachlorophenol, sulfadiazine, roxithromycin, associated ARG genes, and indI1 had the highest detection frequencies. Correlation analysis suggested a stronger positive relationship between the ARG abundance and the bioaccessible OP content than the total OP content. Additionally, the significant correlation between the bioaccessible mixed pollutant contents and ARG/intI1 abundance suggested a direct/indirect impact of the bioaccessible mixed pollutants on soil ARG dissemination. This study provided a preliminary understanding of the interaction between mixed pollutants and ARGs in co-contaminated soils. (C) 2015 Elsevier Ltd. All rights reserved.
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