Metaviromic analyses of DNA virus community from sediments of the N-Choe stream, North India

Mukhopadhyay, Adhip; Choudhury, Shubham; Kumar, Manoj

doi:10.1016/j.virusres.2023.199110

Cited by 2 publications

(1 citation statement)

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“…The pattern of ARG sharing between viral contigs and MAGs revealed that the lincosamide nucleotidyltransferase‐encoding gene lnu (D) exhibited the most extensive linkages between bacteria and viruses (Figure 7C ). Macrolide–lincosamide–streptogramin, tetracycline, and aminoglycoside resistance genes were the primary ARG types carried by viruses in WWTPs, aligning with reports of their presence in diverse environmental viromes in soil, sediment, and rumen [ 9 , 52 , 53 ]. These ARG types are prevalent in livestock and municipal wastewater [ 54 , 55 ], and their spread is mediated by diverse mobile genetic elements including gene transduction by phages [ 56 ].…”

Section: Resultssupporting

confidence: 73%

A panoramic view of the virosphere in three wastewater treatment plants by integrating viral‐like particle‐concentrated and traditional non‐concentrated metagenomic approaches

Zhang,

Tang,

Jin

et al. 2024

iMeta

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Wastewater biotreatment systems harbor a rich diversity of microorganisms, and the effectiveness of biotreatment systems largely depends on the activity of these microorganisms. Specifically, viruses play a crucial role in altering microbial behavior and metabolic processes throughout their infection phases, an aspect that has recently attracted considerable interest. Two metagenomic approaches, viral‐like particle‐concentrated (VPC, representing free viral‐like particles) and non‐concentrated (NC, representing the cellular fraction), were employed to assess their efficacy in revealing virome characteristics, including taxonomy, diversity, host interactions, lifestyle, dynamics, and functional genes across processing units of three wastewater treatment plants (WWTPs). Our findings indicate that each approach offers unique insights into the viral community and functional composition. Their combined use proved effective in elucidating WWTP viromes. We identified nearly 50,000 viral contigs, with Cressdnaviricota and Uroviricota being the predominant phyla in the VPC and NC fractions, respectively. Notably, two pathogenic viral families, Asfarviridae and Adenoviridae, were commonly found in these WWTPs. We also observed significant differences in the viromes of WWTPs processing different types of wastewater. Additionally, various phage‐derived auxiliary metabolic genes (AMGs) were active at the RNA level, contributing to the metabolism of the microbial community, particularly in carbon, sulfur, and phosphorus cycling. Moreover, we identified 29 virus‐carried antibiotic resistance genes (ARGs) with potential for host transfer, highlighting the role of viruses in spreading ARGs in the environment. Overall, this study provides a detailed and integrated view of the virosphere in three WWTPs through the application of VPC and NC metagenomic approaches. Our findings enhance the understanding of viral communities, offering valuable insights for optimizing the operation and regulation of wastewater treatment systems.

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