Revealing the anaerobic biodegradation pathway and mechanism of sulfamethoxazole by a novel Cupidesulfovibrio sp. strain SA-9.
Liu J, Yang X, Gao T, Zhang Y, Pan D
Soil Health
Antibiotic residues from farms and wastewater contaminate garden soil and the food you grow in it — bacteria that can neutralize these pollutants could one day help keep your vegetables and local waterways safer.
Antibiotics like sulfamethoxazole get flushed into the environment through wastewater and farm runoff, where they linger and contribute to antibiotic-resistant bacteria. Researchers found a new type of microbe that lives without oxygen and can break this antibiotic down. Understanding how this microbe works opens the door to using it — or ones like it — to clean up polluted soils and water.
Key Findings
A novel anaerobic bacterium, Cupidesulfovibrio sp. strain SA-9, was isolated and confirmed capable of degrading sulfamethoxazole without oxygen.
The bacterium preferentially used lactate or pyruvate as energy sources, paired with sulfate, nitrate, or carbonate as electron acceptors to drive antibiotic breakdown.
A measurable degradation half-life was determined, providing quantitative evidence of the strain's effectiveness at breaking down sulfamethoxazole.
chevron_right Technical Summary
Scientists discovered a new anaerobic bacterium that can break down sulfamethoxazole, a common antibiotic, in environments without oxygen. This finding could help address antibiotic pollution in soils and waterways.
Abstract Preview
The widespread use of sulfamethoxazole (SMX) has raised significant concerns regarding environmental residue pollution and the emergence of bacterial antibiotic resistance. Anaerobes play crucial r...
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