A High Rate Algal Pond Hosting a Dynamic Community of RNA Viruses

Type Article
Date 2021-11
Language English
Author(s) Chase Emily E.1, 2, Monteil-Bouchard Sonia1, Gobet AngeliqueORCID3, Andrianjakarivony Felana H.ORCID1, 2, Desnues Christelle1, 2, Blanc Guillaume1
Affiliation(s) 1 : Microbiologie Environnementale Biotechnologie, Institut Méditerranéen d’Océanologie, 163 Avenue de Luminy, 13009 Marseille, France
2 : Institut Hospitalo-Universitaire (IHU) Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005 Marseille, France
3 : MARBEC University Montpellier, CNRS, Ifremer, IRD, 34203 Sète, France
Source Viruses-basel (1999-4915) (MDPI AG), 2021-11 , Vol. 13 , N. 11 , P. 2163 (20p.)
DOI 10.3390/v13112163
Note This article belongs to the Section Viruses of Plants, Fungi and Protozoa
Keyword(s) microalgae, Marnaviridae, community diversity, community dynamics
Abstract

Despite a surge of RNA virome sequencing in recent years, there are still many RNA viruses to uncover—as indicated by the relevance of viral dark matter to RNA virome studies (i.e., putative viruses that do not match to taxonomically identified viruses). This study explores a unique site, a high-rate algal pond (HRAP), for culturing industrially microalgae, to elucidate new RNA viruses. The importance of viral-host interactions in aquatic systems are well documented, and the ever-expanding microalgae industry is no exception. As the industry becomes a more important source of sustainable plastic manufacturing, a producer of cosmetic pigments and alternative protein sources, and a means of CO2 remediation in the face of climate change, studying microalgal viruses becomes a vital practice for proactive management of microalgae cultures at the industrial level. This study provides evidence of RNA microalgal viruses persisting in a CO2 remediation pilot project HRAP and uncovers the diversity of the RNA virosphere contained within it. Evidence shows that family Marnaviridae is cultured in the basin, alongside other potential microalgal infecting viruses (e.g., family Narnaviridae, family Totitiviridae, and family Yueviridae). Finally, we demonstrate that the RNA viral diversity of the HRAP is temporally dynamic across two successive culturing seasons.

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