Summary
This study elucidates how nano-biochar amendment of vermicomposting systems alters phage ecology to mitigate antibiotic resistance gene dissemination. By shifting the earthworm gut microbiome from lysogenic (mutualistic) to lytic (predatory) phage dominance, nano-biochar disrupts ARG transduction pathways whilst preserving the natural 'kill-the-winner' suppression of antibiotic-resistant bacteria in the surrounding vermicompost. The findings provide a mechanistic framework for using biochar-based interventions to reduce resistance gene spread in organic waste treatment systems.
Regional applicability
The findings are relevant to UK organic waste management and composting systems, where vermicomposting is increasingly adopted for circular nutrient cycling. However, applicability would depend on whether nano-biochar products are available and economically viable at UK farm and processing scales, and whether local regulatory frameworks support their use in food production systems.
Key measures
Phage life strategies (lytic/lysogenic prevalence), antibiotic resistance gene abundance and transduction rates, microbial and viral community composition (via metagenomics and viromics), ARG transmission efficiency in batch cultures
Outcomes reported
The study measured changes in phage life strategies (lytic versus lysogenic), abundance of antibiotic-resistant bacteria, and dissemination of antibiotic resistance genes in vermicompost and earthworm gut environments following nano-biochar amendment. Laboratory validation confirmed the mechanisms by which nano-biochar reduces ARG transmission through phage lifestyle conversion.
Topic tags
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.