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Title: RNA viruses in aquatic ecosystems through the lens of ecological genomics and transcriptomics
Authors: Kolundžija, Sandra
Cheng, Dong-Qiang
Lauro, Federico M.
Keywords: Science::Biological sciences
Issue Date: 2022
Source: Kolundžija, S., Cheng, D. & Lauro, F. M. (2022). RNA viruses in aquatic ecosystems through the lens of ecological genomics and transcriptomics. Viruses, 14(4), 702-.
Project: NRF2018-ITS004-0001 
Journal: Viruses 
Abstract: Massive amounts of data from nucleic acid sequencing have changed our perspective about diversity and dynamics of marine viral communities. Here, we summarize recent metatranscriptomic and metaviromic studies targeting predominantly RNA viral communities. The analysis of RNA viromes reaffirms the abundance of lytic (+) ssRNA viruses of the order Picornavirales, but also reveals other (+) ssRNA viruses, including RNA bacteriophages, as important constituents of extracellular RNA viral communities. Sequencing of dsRNA suggests unknown diversity of dsRNA viruses. Environmental metatranscriptomes capture the dynamics of ssDNA, dsDNA, ssRNA, and dsRNA viruses simultaneously, unravelling the full complexity of viral dynamics in the marine environment. RNA viruses are prevalent in large size fractions of environmental metatranscriptomes, actively infect marine unicellular eukaryotes larger than 3 µm, and can outnumber bacteriophages during phytoplankton blooms. DNA and RNA viruses change abundance on hourly timescales, implying viral control on a daily temporal basis. Metatranscriptomes of cultured protists host a diverse community of ssRNA and dsRNA viruses, often with multipartite genomes and possibly persistent intracellular lifestyles. We posit that RNA viral communities might be more diverse and complex than formerly anticipated and that the influence they exert on community composition and global carbon flows in aquatic ecosystems may be underestimated.
ISSN: 1999-4915
DOI: 10.3390/v14040702
Schools: Asian School of the Environment 
Research Centres: Singapore Centre for Environmental Life Sciences and Engineering (SCELSE) 
Rights: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// 4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ASE Journal Articles
SCELSE Journal Articles

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