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Alleviation of ammonia inhibition associated with enhanced quorum sensing signaling system under trace elements supplementation during biomethanation.
Environmental research · · Journal Article
Wang, Xiao + more
Abstract ↗AI summary
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Optimal trace-element supplementation with Fe, Co, and Ni enhances AHL secretion (C4-HSL and C6-HSL) under ammonia stress, linked to improved AD stability and methane production.
- Why it matters: Ammonia toxicity limits stable anaerobic digestion, and while trace elements help, the mechanism involving N-acyl homoserine lactones and ammonia relief is unclear.
- What they did: The study tested different trace elements for their effects on AHL secretion under ammonia stress, then assessed associated microbial community shifts and gene/enzyme transcription linked to AHL signaling.
- The result: Trace elements enriched Bacteroidetes_vadinHA17, Syntrophomonas, and Methanosarcina, and increased AHL signals correlated with transcription of glk, pgk, and yhdR and enzyme synthesis to alleviate ammonia inhibition across the AD process.
The findingWhy it mattersWhat they didThe result
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