학술논문
Cryptic and abundant marine viruses at the evolutionary origins of Earth’s RNA virome.
Document Type
Article
Author
Zayed, Ahmed A.; Wainaina, James M.; Dominguez-Huerta, Guillermo; Pelletier, Eric; Guo, Jiarong; Mohssen, Mohamed; Tian, Funing; Pratama, Akbar Adjie; Bolduc, Benjamin; Zablocki, Olivier; Cronin, Dylan; Solden, Lindsey; Delage, Erwan; Alberti, Adriana; Aury, Jean-Marc; Carradec, Quentin; da Silva, Corinne; Labadie, Karine; Poulain, Julie; Ruscheweyh, Hans-Joachim
Source
Subject
*DNA viruses
*RNA viruses
*BIOGEOGRAPHY
*TAXONOMY
*EPIDEMIOLOGY
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Language
ISSN
0036-8075
Abstract
Whereas DNA viruses are known to be abundant, diverse, and commonly key ecosystem players, RNA viruses are insufficiently studied outside disease settings. In this study, we analyzed ≈28 terabases of Global Ocean RNA sequences to expand Earth’s RNA virus catalogs and their taxonomy, investigate their evolutionary origins, and assess their marine biogeography from pole to pole. Using new approaches to optimize discovery and classification, we identified RNA viruses that necessitate substantive revisions of taxonomy (doubling phyla and adding >50% new classes) and evolutionary understanding. “Species”-rank abundance determination revealed that viruses of the new phyla “Taraviricota,” a missing link in early RNA virus evolution, and “Arctiviricota” are widespread and dominant in the oceans. These efforts provide foundational knowledge critical to integrating RNA viruses into ecological and epidemiological models. [ABSTRACT FROM AUTHOR]