Cited by 68Pharmaceutical and Antibiotic Environmental ImpactsSoil Carbon and Nitrogen DynamicsWastewater Treatment and Nitrogen Removal

The effect of ultralow-dose antibiotics exposure on soil nitrate and N2O flux

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DeVries, Stephanie L., Loving, Madeline, Li, Xiqing, Zhang, Pengfei·2015·Scientific Reports

Abstract

Exposure to sub-inhibitory concentrations of antibiotics has been shown to alter the metabolic activity of micro-organisms, but the impact on soil denitrification and N2O production has rarely been reported. In this study, incubation and column transport experiments were conducted on soils exposed to as many as four antibiotics in the ng · kg(-1) range (several orders of magnitude below typical exposure rates) to evaluate the impact of ultralow dose exposure on net nitrate losses and soil N2O flux over time. Under anaerobic incubation conditions, three antibiotics produced statistically significant dose response curves in which denitrification was stimulated at some doses and inhibited at others. Sulfamethoxazole in particular had a stimulatory effect at ultralow doses, an effect also evidenced by a near 17% increase in nitrate removal during column transport. Narasin also showed evidence of stimulating denitrification in anaerobic soils within 3 days of exposure, which is concurrent to a statistically significant increase in N2O flux measured over moist soils exposed to similar doses. The observation that even ultralow levels of residual antibiotics may significantly alter the biogeochemical cycle of nitrogen in soil raises a number of concerns pertaining to agriculture, management of nitrogen pollution, and climate change, and warrants additional investigations.

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  1. Melkonian J., van Es H., DeGaetano A. & Joseph L. ADAPT-N: Adaptive nitrogen management for mazie using high resolution climate data and model simulations. In Proc. 9th Int. Conf. on Precision Agriculture. Denver, CO (ed Kosla R.) 20– 23 (2008).

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Authors
DeVries, S. L., Loving, M., Li, X., & Zhang, P.
Affiliations
  • The Graduate Center, CUNY (US)
  • City College of New York (US)
  • Peking University (CN)
Corresponding author
Zhang, Pengfei
Venue
Scientific Reports
Published
2015-11-26
Volume
5
Issue
1
Pages
16818-16818
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2176938303
Cited by
68
References
36
Citations by year
2026: 8 · 2025: 8 · 2024: 5 · 2023: 3 · 2022: 10 · 2021: 6 · 2020: 8 · 2019: 6 · 2018: 5 · 2017: 4 · 2016: 5
FWCI
2.91
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • CUNY Academic Works (City University of New York) (submittedVersion)
Funders
  • U.S. Department of Agriculture
  • Northeast SARE
  • National Institute of Food and Agriculture
Topics
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Physical Sciences › Environmental Science › Pollution › Wastewater Treatment and Nitrogen Removal
Keywords
soil denitrification, nitrous oxide flux, nitrate removal, sulfamethoxazole, narasin, nitrogen biogeochemistry, soil nitrogen cycling, climate change, nitrogen pollution
MeSH terms
Anaerobiosis, Analysis of Variance, Anti-Bacterial Agents, Nitrates, Nitrous Oxide, Oxidation-Reduction, Soil, Time Factors, Geologic Sediments, Denitrification

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