ArticlemSphere2026
Temporal succession of microbiomes and resistomes during buried rat carcass decomposition.
Article in mSphere, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
Funding
Abstract
Burial is a prevalent approach for disposing of human and animal carcass. Carcass decomposition is a key natural disturbance that reshapes microbial communities and modulates biogeochemical cycles. Animal intestines serve as critical natural reservoirs of antibiotic resistance genes (ARGs), and carcass decomposition concurrently remodels intestinal bacterial assemblages and resistome profiles. Most previous studies have characterized microbial succession in surface-exposed carcasses, yet the coordinated temporal shifts of intestinal microbiota, resistomes, and horizontal gene transfer (HGT) signatures within buried carcasses remain underexplored. We established a buried rat carcass model and performed metagenomic sequencing to characterize temporal dynamics of intestinal bacteria, ARGs, mobile genetic elements (MGEs), and HGT events. Bacterial communities underwent directional succession accompanied by reduced α-diversity and stage-specific β-diversity. Proteobacteria gradually outcompeted Firmicutes and Bacteroidetes to become dominant taxa. The resistome followed regular temporal changes: tetracycline and macrolide-lincosamide-streptogramin (MLS) ARGs prevailed in early decomposition, while multidrug, β-lactam, polymyxin, and quinolone ARGs accumulated in mid-late stages, with ARG richness peaking on day 28. Approximately 83% of temporally dynamic ARG subtypes were positively correlated with decomposition duration. Procrustes analysis (
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