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Corpse decomposition increases the diversity and abundance of antibiotic resistance genes in different soil types in a fish model
- Source :
- Environmental Pollution. 286:117560
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- As a common natural phenomenon, corpse decomposition may lead to serious environmental pollution such as nitrogen pollution. However, less is known about antibiotic resistance genes (ARGs), an emerging contaminant, during corpse degradation. Here, ARGs and microbiome in three soil types (black, red and yellow soil) have been investigated between experimental and control groups based on next-generation sequencing and high-throughput quantitative PCR techniques. We found that the absolute abundance of total ARGs and mobile genetic elements (MGEs) in the experimental groups were respectively enriched 536.96 and 240.60 times in different soil types, and the number of ARGs in experimental groups was 7-25 more than that in control groups. For experimental groups, the distribution of ARGs was distinct in different soil types, but sulfonamide resistance genes were always enriched. Corpse decomposition was a primary determinant for ARGs profiles. Microbiome, NH4+ concentrates and pH also significantly affected ARGs profiles. Nevertheless, soil types had few effects on ARGs. For soil microbiome, some genera were elevated in experimental groups such as the Ignatzschineria and Myroides. The alpha diversity is decreased in experimental groups and microbial community structures are different between treatments. Additionally, the Escherichia and Neisseria were potential pathogens elevated in experimental groups. Network analysis indicated that most of ARGs like sulfonamide and multidrug resistance genes presented strong positively correlations with NH4+ concentrates and pH, and some genera like Ignatzschineria and Dysgonomonas were positively correlated with several ARGs such as aminoglycoside and sulfonamide resistance genes. Our study reveals a law of ARGs' enrichment markedly during corpse decomposing in different soil types, and these ARGs contaminant maintaining in environment may pose a potential threat to environmental safety and human health.
- Subjects :
- 010504 meteorology & atmospheric sciences
Health, Toxicology and Mutagenesis
Zoology
Environmental pollution
010501 environmental sciences
Biology
Toxicology
01 natural sciences
Soil
Abundance (ecology)
Cadaver
Animals
Humans
Microbiome
Soil Microbiology
0105 earth and related environmental sciences
Drug Resistance, Microbial
Soil classification
General Medicine
Pollution
Anti-Bacterial Agents
Multiple drug resistance
Microbial population biology
Genes, Bacterial
Alpha diversity
Mobile genetic elements
Subjects
Details
- ISSN :
- 02697491
- Volume :
- 286
- Database :
- OpenAIRE
- Journal :
- Environmental Pollution
- Accession number :
- edsair.doi.dedup.....c71ca2eafd2e09df2dc20362d431a9ee