What does this research mean for the field?

During livestock manure composting, lytic viral interactions primarily drive the decline of antimicrobial-resistant bacteria, while intense viral predation causes surviving bacteria to evolve antiviral defense systems that restrict further horizontal acquisition of resistance genes. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.ESTABLISHES_NEW_DIRECTION.

What question did this study set out to answer?

To elucidate the role of the viral biosphere and phage-host evolutionary dynamics in shaping antimicrobial resistance gene elimination during livestock manure composting.

September 8, 2026Environmental Science & Technology

Virus-Mediated Fate of Antimicrobial Resistance Genes in Livestock Manure Composting

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Authors

QTQihe TangGuangxi University LWLuoyao WenGuangxi University YZYixuan ZhangResearch Center for Eco-Environmental Sciences

Discussion

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Implication

Metagenomic analysis reveals viral predation reduces antimicrobial-resistant bacteria during manure composting, highlighting bacteriophages as critical ecological drivers of resistance gene fate.

Key Points

To elucidate the role of the viral biosphere and phage-host evolutionary dynamics in shaping antimicrobial resistance gene elimination during livestock manure composting.
Analyzed a global metagenomic and viromic dataset comprising 420 metagenomes and 42 viromes sampled across composting succession stages.
Identified 106,387 viral operational taxonomic units (vOTUs) to evaluate lytic interactions, transduction potential, and bacterial antiviral defense systems.
Selective enrichment of thermophilic antimicrobial-resistant bacteria (ARB) restricted complete resistance elimination, comprising approximately 60% of the residual maturation-phase resistome.
Lytic phage interactions quantitatively dominated gene transfer via transduction (39.5% vs. < 0.5%), and the relative abundance of ARG-reducing vOTUs significantly exceeded that of transduction-mediating vOTUs (7.24% vs. 0.06%, p < 0.001).
Surviving ARB evolved enriched antiviral defense systems against viral lysis, functioning as a genetic barrier that suppresses further horizontal acquisition of ARGs via transformation or conjugation.

Cite This Study

Tang et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd82f58e84d0ff5b4781d https://doi.org/10.1021/acs.est.6c04304

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September 8, 2026Environmental Science & Technology

Virus-Mediated Fate of Antimicrobial Resistance Genes in Livestock Manure Composting

View Full Paper

Ask AI

Bookmark

Authors

QTQihe TangGuangxi University LWLuoyao WenGuangxi University YZYixuan ZhangResearch Center for Eco-Environmental Sciences

Discussion

Member takes

Implication

Metagenomic analysis reveals viral predation reduces antimicrobial-resistant bacteria during manure composting, highlighting bacteriophages as critical ecological drivers of resistance gene fate.

Key Points

To elucidate the role of the viral biosphere and phage-host evolutionary dynamics in shaping antimicrobial resistance gene elimination during livestock manure composting.
Analyzed a global metagenomic and viromic dataset comprising 420 metagenomes and 42 viromes sampled across composting succession stages.
Identified 106,387 viral operational taxonomic units (vOTUs) to evaluate lytic interactions, transduction potential, and bacterial antiviral defense systems.
Selective enrichment of thermophilic antimicrobial-resistant bacteria (ARB) restricted complete resistance elimination, comprising approximately 60% of the residual maturation-phase resistome.
Lytic phage interactions quantitatively dominated gene transfer via transduction (39.5% vs. < 0.5%), and the relative abundance of ARG-reducing vOTUs significantly exceeded that of transduction-mediating vOTUs (7.24% vs. 0.06%, p < 0.001).
Surviving ARB evolved enriched antiviral defense systems against viral lysis, functioning as a genetic barrier that suppresses further horizontal acquisition of ARGs via transformation or conjugation.

Cite This Study

Tang et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd82f58e84d0ff5b4781d https://doi.org/10.1021/acs.est.6c04304

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