Results 51 to 60 of about 79 (71)

Giant viruses coexisted with the cellular ancestors and represent a distinct supergroup along with superkingdoms Archaea, Bacteria and Eukarya

BMC Evolutionary Biology, 2012
Background The discovery of giant viruses with genome and physical size comparable to cellular organisms, remnants of protein translation machinery and virus-specific parasites (virophages) have raised intriguing questions about their origin.
Nasir Arshan, Kim Kyung, Caetano-Anolles Gustavo   +2 more
doaj   +1 more source

Lineage-specific expansions of polinton-like viruses in photosynthetic cryptophytes

Microbiome
Background Polinton-like viruses (PLVs) are diverse eukaryotic DNA viral elements (14–40 kb) that often undergo significant expansion within protist genomes through repeated insertion events. Emerging evidence indicates they function as antiviral defense
Paul-Adrian Bulzu, Helena Henriques Vieira, Rohit Ghai   +2 more
doaj   +1 more source

Molecular architecture of giant viruses infecting microbial eukaryotes (protists)

BioTechnologia
In this review, I describe recent findings on the molecular architecture and genomic characterization of giant viruses that infect microbial eukaryotes (protists) across diverse ecosystems and ecological niches.
Anhelina Kyrychenko
doaj   +1 more source

The association of the rumen virome with methane emissions in dairy cattle

Communications Biology
Enteric methane production in ruminants is a major environmental concern, yet its association with the ruminal virome remains largely unexplored. Here, we conduct a bioinformatic analysis on previously published ruminal metagenomes from 448 Holstein cows
Carlos Navarro Marcos, Mónica Gutiérrez-Rivas, Idoia Goiri, Aser García-Rodríguez, Óscar González-Recio   +4 more
doaj   +1 more source

Viral dynamics in a high-rate algal pond reveals a burst of Phycodnaviridae diversity correlated with episodic algal mortality

mBio
This study explores virus-host dynamics in a unique environment: an industrial high-rate algal pond (HRAP). A wealth of novel DNA algal viruses are revealed, including members of Nucleocytoviricota “giant viruses” and the enigmatic Preplasmiviricota (e.g.
E. E. Chase, T. Pitot, S. Bouchard, S. Triplet, C. Przybyla, A. Gobet, C. Desnues, G. Blanc   +7 more
doaj   +1 more source

A Polinton-like Virus of C. parva Inhibits the Population Growth of a Newly Isolated Relative of Tethysvirus ontarioense

Viruses
The previous discovery of genomes of Polinton-like viruses (PLVs) associated with viruses of Chrysochromulina parva stimulated this research to determine the biological nature of these putative viral hyperparasites. Purification of C.
George R. Thomas, Ichiro Inamoto, Christine N. Palermo, Gurshan Bajaj, Steven M. Short   +4 more
doaj   +1 more source

Complex transcriptional regulations of a hyperparasitic quadripartite system in giant viruses infecting protists

Nature Communications
Hyperparasitism is a common pattern in nature that is not limited to cellular organisms. Giant viruses infecting protists can be hyperparasitized by smaller ones named virophages.
Alexandra Bessenay, Hugo Bisio, Lucid Belmudes, Yohann Couté, Lionel Bertaux, Jean-Michel Claverie, Chantal Abergel, Sandra Jeudy, Matthieu Legendre   +8 more
doaj   +1 more source

Viva lavidaviruses! Five features of virophages that parasitize giant DNA viruses. [PDF]

PLoS Pathogens, 2019
Sarah Duponchel, Matthias G Fischer
doaj   +1 more source

Corrigendum: Genome and Environmental Activity of a Chrysochromulina parva Virus and Its Virophages

Frontiers in Microbiology, 2019
Joshua M. A. Stough, Natalya Yutin, Yuri V. Chaban, Mohammed Moniruzzaman, Eric R. Gann, Helena L. Pound, Morgan M. Steffen, Jenna N. Black, Eugene V. Koonin, Steven W. Wilhelm, Steven M. Short   +10 more
doaj   +1 more source

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The Expanding Family of Virophages

Viruses, 2016
Meriem Bekliz, Philippe Colson, Bernard La Scola   +2 more
exaly