Virophages and retrotransposons colonize the genomes of a heterotrophic flagellate [PDF]
eLife, 2021 Virophages can parasitize giant DNA viruses and may provide adaptive anti-giant virus defense in unicellular eukaryotes. Under laboratory conditions, the virophage mavirus integrates into the nuclear genome of the marine flagellate Cafeteria burkhardae ...
Thomas Hackl +4 more
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Ecological and evolutionary dynamics of cell-virus-virophage systems. [PDF]
PLoS Computational Biology, 2023 Microbial eukaryotes, giant viruses and virophages form a unique hyperparasitic system. Virophages are parasites of the virus transcription machinery and can interfere with virus replication, resulting in a benefit to the eukaryotic host population ...
Jose Gabriel Nino Barreat +1 more
doaj +5 more sources
Virophages, Satellite Viruses, Virophage Replication and Its Effects and Virophage Defence Mechanisms for Giant Virus Hosts and Giant Virus Defence Systems against Virophages [PDF]
International Journal of Molecular SciencesIn this paper, the characteristics of 40 so far described virophages—parasites of giant viruses—are given, and the similarities and differences between virophages and satellite viruses, which also, like virophages, require helper viruses for replication, are described.
Wiesław Deptuła +2 more
exaly +4 more sources
A billion years arms-race between viruses, virophages, and eukaryotes [PDF]
eLife, 2023 Bamfordviruses are arguably the most diverse group of viruses infecting eukaryotes. They include the Nucleocytoplasmic Large DNA viruses (NCLDVs), virophages, adenoviruses, Mavericks and Polinton-like viruses.
Jose Gabriel Nino Barreat +1 more
doaj +2 more sources
Viral dynamics in a high-rate algal pond reveals a burst of Phycodnaviridae diversity correlated with episodic algal mortality [PDF]
mBioThis 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 +7 more
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Virophages of Giant Viruses: An Update at Eleven [PDF]
Viruses, 2019 The last decade has been marked by two eminent discoveries that have changed our perception of the virology field: The discovery of giant viruses and a distinct new class of viral agents that parasitize their viral factories, the virophages.
Said Mougari +4 more
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A New Zamilon-like Virophage Partial Genome Assembled from a Bioreactor Metagenome
Frontiers in Microbiology, 2015 Virophages replicate within viral factories inside the Acanthamoeba cytoplasm, and decrease the infectivity and replication of their associated giant viruses.
Philippe Colson +2 more
exaly +3 more sources
Complex transcriptional regulations of a hyperparasitic quadripartite system in giant viruses infecting protists [PDF]
Nature CommunicationsHyperparasitism 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 +8 more
doaj +2 more sources
Seasonal dynamics and diversity of Antarctic marine viruses reveal a novel viral seascape [PDF]
Nature CommunicationsThe Southern Ocean microbial ecosystem, with its pronounced seasonal shifts, is vulnerable to the impacts of climate change. Since viruses are key modulators of microbial abundance, diversity, and evolution, we need a better understanding of the effects ...
Gonçalo J. Piedade +11 more
doaj +3 more sources
Polinton-like viruses are abundant in aquatic ecosystems [PDF]
Microbiome, 2021 Background Polintons are large mobile genetic elements found in the genomes of eukaryotic organisms that are considered the ancient ancestors of most eukaryotic dsDNA viruses.
Christopher M. Bellas, Ruben Sommaruga
doaj +2 more sources