Journal
ENVIRONMENTAL POLLUTION
Volume 222, Issue -, Pages 583-591Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2016.10.015
Keywords
Antibiotic-resistant genes; Denitrifying genes; Enhanced anoxic denitrification; Mutual dynamic interplay; Denitrifiers
Categories
Funding
- Fundamental Research Funds for the Central University of China [KYTZ201404, KJQN201517]
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences [SEPR2014-01]
- National Natural Science Foundation of China [41401347, 41401254, 41571316]
- Leading Project of the Institute of Soil Science, Chinese Academy of Sciences [ISSASIP1655]
Ask authors/readers for more resources
Mixed contamination of nitrate and antibiotics/antibiotic-resistant genes (ARGs) is an emerging environmental risk to farmland soil. This is the first study to explore the role of excessive anthropogenic nitrate input in the anoxic dissipation of soil antibiotic/ARGs. During the initial 10 days of incubation, the presence of soil antibiotics significantly inhibited NO3- dissipation, N2O production rate, and denitrifying genes (DNGs) abundance in soil (p < 0.05). Between days 10 and 30, by contrast, enhanced denitrification clearly prompted the decline in antibiotic contents and ARG abundance. Significantly negative correlations were detected between DNGs and ARGs, suggesting that the higher the DNG activity, the more dramatic is the denitrification and the greater are the antibiotic dissipation and ARG abundance. This study provides crucial knowledge for understanding the mutual interaction between soil DNGs and ARGs in the enhanced anoxic denitrification condition. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available