Environmental fate and microbial effects of monensin, lincomycin, and sulfamethazine residues in soil

Abstract

a b s t r a c tThe impact of commonly-used livestock antibiotics on soil nitrogen transformations under varying redox conditions is largely unknown. Soil column incubations were conducted using three livestock antibiotics (monensin, lincomycin and sulfamethazine) to better understand the fate of the antibiotics, their effect on nitrogen transformation, and their impact on soil microbial communities under aerobic, anoxic, and denitrifying conditions. While monensin was not recovered in the effluent, lincomycin and sulfamethazine concentrations decreased slightly during transport through the columns. Sorption, and to a limited extent degradation, are likely to be the primary processes leading to antibiotic attenuation during leaching. Antibiotics also affected microbial respiration and clearly impacted nitrogen transformation. The occurrence of the three antibiotics as a mixture, as well as the occurrence of lincomycin alone affected, by inhibiting any nitrite reduction, the denitrification process. Discontinuing antibiotics additions restored microbial denitrification. Metagenomic analysis indicated that Proteobacteria, Bacteroidetes, Actinobacteria, and Chloroflexi were the predominant phyla observed throughout the study. Results suggested that episodic occurrence of antibiotics led to a temporal change in microbial community composition in the upper portion of the columns while only transient changes occurred in the lower portion. Thus, the occurrence of high concentrations of veterinary antibiotic residues could impact nitrogen cycling in soils receiving wastewater runoff or manure applications with potential longer-term microbial community changes possible at higher antibiotic concentrations.

How microbial community composition, sorption and simultaneous application of six pharmaceuticals affect their dissipation in soils

“…Some pharmaceuticals may largely affect activity of the soil microbial community, i.e., antibiotics can inhibit the degradation of microorganisms (Caracciolo et al, 2015;D'Alessio et al, 2019;Grenni et al, 2018). As a result, dissipation of other compounds that occur in soils together with such compounds can be reduced.…”

Digestate: The Coproduct of Biofuel Production in a Circular Economy, and New Results for Cassava Peeling Residue Digestate

“…Similarly, field-spreading agricultural land with raw/ untreated manures derived from medicated livestock contributes to dissemination of veterinary antibiotic residues and antibiotic-resistant pathogens. Lincomycin, monensin, and sulfamethazine antibiotics were reported to affect soil microbial community composition and respiration, denitrification and nitrogen transformations [37]. Applications of digestate for biofertilizer and soil amendment purposes could ameliorate some of these adverse effects.…”

Fate of environmental pollutants: A review

“…The fate of veterinary antibiotics such as monensin, lincomycin, and sulfamethazine and their impact on soil nitrogen transformation and microbial communities under different redox conditions was evaluated using a vertical flow column study (D' Alessio et al, 2019). The results demonstrated nondetectable level of monensin and reduced amount of lincomycin and sulfamethazine in effluent in all conditions, primarily due to sorption and limited biodegradation.…”