Effects of Triclosan and Biosolids on Microbial Community Composition in an Agricultural Soil
| Autor: | Kate M. Scow, Temitope A. Ogunyoku, Inmyoung Park, Thomas M. Young, Nannan Zhang |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Environmental Engineering
Biosolids soil microbial community phospholipid fatty acid Article Soil chemistry.chemical_compound Engineering Nutrient Soil Pollutants Environmental Chemistry Waste Management and Disposal Phospholipids Water Science and Technology chemistry.chemical_classification personal care products Bacteria biology Ecology Ecological Modeling Fatty Acids fungi Fungi Fatty acid biosolid Agriculture Biological Sciences biology.organism_classification Pollution Triclosan chemistry Microbial population biology Wastewater Environmental chemistry Chemical Sciences Soil water antimicrobial |
| Zdroj: | Water environment research : a research publication of the Water Environment Federation, vol 85, iss 12 |
| ISSN: | 1554-7531 1061-4303 |
| DOI: | 10.2175/106143012x13560205144335 |
| Popis: | Triclosan (TCS) is a widely used antimicrobial agent found at high concentrations in biosolids produced during municipal wastewater treatment. The effect of adding TCS, in the presence or absence of biosolids, on the composition of an agricultural soil microbial community was measured using phospholipid fatty acid analysis (PLFA). Most changes observed in microbial community composition were attributable to the addition of biosolids or to the passage of time, with smaller changes due to TCS exposure, regardless of the presence of biosolids. TCS slightly reduced the relative abundance of Gram-positive and Gram-negative bacteria and fungi, with or without biosolids. Bacteria were more sensitive than eukaryotes, consistent with the mode of action of TCS, which selectively targets fatty acid synthesis and disrupts cell membranes of bacteria. TCS slightly increased biomarkers of microbial stress, but stress biomarkers were lower in all biosolid treated soils, presumably due to increased availability of nutrients mitigating potential TCS toxicity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text