Bacteria teams break down antibiotics in low-oxygen water
Jia Y, Yan Y, Chen B, Shu WS, Lu H
Phytoremediation
The antibiotics that wash off farms and into waterways don't just disappear, and the microbial cleanup crews researchers are mapping here could one day help protect the soil and water that feeds your garden.
Researchers found a group of bacteria living without oxygen that can team up to digest sulfamethoxazole, a common antibiotic that pollutes wastewater. Three different bacteria species split the work between them, even swapping genes and nutrients to keep the whole group running even when antibiotic levels got high. This kind of teamwork could be harnessed to build better wastewater treatment systems that clean up antibiotic pollution before it reaches soil and streams.
Key Findings
Bioreactor ran for 269 days treating water with 500-1500 μg/L of the antibiotic sulfamethoxazole
Three bacteria genera (Desulfobacterium, Geobacter, and Leptolinea) were co-enriched and appear to divide labor in breaking down the antibiotic
Genome analysis found evidence of gene-swapping and nutrient-sharing between the bacteria, involving energy, sulfur, and stress-response functions
chevron_right Technical Summary
Scientists identified a team of bacteria that work together to break down an antibiotic found in wastewater, using sulfate instead of oxygen to do it. This could lead to better ways to clean contaminated water before it reaches rivers, farms, or drinking supplies.
Abstract Preview
Original paper
Revealing Dual Synergistic Strategies in Sulfate-Reducing Microbiomes for Sulfamethoxazole Biodegradation via DNA-SIP and Metagenomics.
Sulfate-reducing microbiomes (SRMs) have shown strong potential for antibiotic remediation, yet the active microorganisms and community-level strategies associated with sulfamethoxazole (SMX) biotr...
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