Viromes As Genetic Reservoir for the Microbial Communities in Aquatic Environments: A Focus on Antimicrobial-Resistance Genes
| Autor: | Eros Neri, Stefania Arioli, Stefano Colombo, Giulia Della Scala, Diego Mora, Giorgio Gargari |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Microbiology (medical) 030106 microbiology Population lcsh:QR1-502 microbiome Biology Microbiology lcsh:Microbiology 03 medical and health sciences Antibiotic resistance Abundance (ecology) Human virome Microbiome education Gene Relative species abundance Original Research Genetics virome education.field_of_study Lambro River Ecology 030104 developmental biology Metagenomics mesocosms antimicrobial resistance genes |
| Zdroj: | Frontiers in Microbiology Frontiers in Microbiology, Vol 8 (2017) |
| ISSN: | 1664-302X |
| Popis: | Despite studies of viromes isolated from aquatic environments are becoming increasingly frequent, most of them are limited to the characterization of viral taxonomy. Bacterial reads in viromes are abundant but the extent to which this genetic material is playing a role in the ecology of aquatic microbiology remains unclear. To this aim, we developed of a useful approach for the characterization of viral and microbial communities of aquatic environments with a particular focus on the identification of microbial genes harbored in the viromes. Virus-like particles were isolated from water samples collected across the Lambro River, from the spring to the high urbanized Milan area. The derived viromes were analyzed by shotgun metagenomic sequencing looking for the presence, relative abundance of bacterial genes with particular focus on those genes involved in antimicrobial resistance mechanisms. Antibiotic and heavy metal resistance genes have been identified in all virome samples together with a high abundance of reads assigned to cellular processes and signaling. Virome data compared to those identified in the microbiome isolated from the same sample revealed differences in terms of functional categories and their relative abundance. To verify the role of aquatic viral population in bacterial gene transfer, water-based mesocosms were perturbed or not perturbed with a low dose of tetracycline. The results obtained by qPCR assays revealed variation in abundance of tet genes in the virome and microbiome highlighting a relevant role of viral populations in microbial gene mobilization. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|