Results 51 to 60 of about 289 (102)

Virophage infection mode determines ecological and evolutionary changes in a host-virus-virophage system

Giant viruses can control their eukaryotic host populations, shaping the ecology and evolution of aquatic microbial communities. Understanding the impact of the viruses’ own parasites, the virophages, on the control of microbial communities remains a ...
Becks, Lutz, Del Arco, Ana
core   +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

Guarani Virophage, a New Sputnik-Like Isolate From a Brazilian Lake

Frontiers in Microbiology, 2019
Virophages are critical regulators of viral population dynamics and potential actors in the stability of the microbial networks. These small biological entities predate the replicative cycle of giant viruses, such as the members of the Mimiviridae family
Said Mougari, Meriem Bekliz, Jonatas Abrahao, Jonatas Abrahao, Fabrizio Di Pinto, Anthony Levasseur, Bernard La Scola   +6 more
doaj   +1 more source

The Virophage Family Lavidaviridae

, 2020
Double-stranded (ds) DNA viruses of the family Lavidaviridae, commonly known as virophages, are a fascinating group of eukaryotic viruses that depend on a coinfecting giant dsDNA virus of the Mimiviridae for their propagation.
Matthias G. Fischer
core   +1 more source

Inside the Lifestyle of the Virophage

, 2010
International audienceObjective(s): We sought to better characterize Sputnik, the first isolated virophage, and to analyze its parasitic lifestyle during co-infection with Marseillevirus (a new giant virus) in Acanthamoeba castellanii.
Desnues, Christelle, D. Raoult, C. Desnues, Raoult, Didier   +3 more
core   +1 more source

Giant virus vs amoeba: fight for supremacy

Virology Journal, 2019
Since the discovery of mimivirus, numerous giant viruses associated with free-living amoebae have been described. The genome of giant viruses can be more than 2.5 megabases, and virus particles can exceed the size of many bacteria.
Graziele Oliveira, Bernard La Scola, Jônatas Abrahão   +2 more
doaj   +1 more source

Impact of the Zamilon virophage.

, 2014
(A–B) Transmission electron microscopy images of abnormal Mont1 virus particles (arrows) produced from the virus factory with (A; scale bar 0.1 µm) and without (B; scale bar 0.1 µm) Zamilon.
Morgan Gaia (402516), Samia Benamar (585360), Isabelle Pagnier (402517), Olivier Croce (585362), Bernard La Scola (3832), Didier Raoult (3833), Mondher Boughalmi (585361), Philippe Colson (73139)   +7 more
core   +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

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

Discovery and Further Studies on Giant Viruses at the IHU Mediterranee Infection That Modified the Perception of the Virosphere

Viruses, 2019
The history of giant viruses began in 2003 with the identification of Acanthamoeba polyphaga mimivirus. Since then, giant viruses of amoeba enlightened an unknown part of the viral world, and every discovery and characterization of a new giant virus ...
Clara Rolland, Julien Andreani, Amina Cherif Louazani, Sarah Aherfi, Rania Francis, Rodrigo Rodrigues, Ludmila Santos Silva, Dehia Sahmi, Said Mougari, Nisrine Chelkha, Meriem Bekliz, Lorena Silva, Felipe Assis, Fábio Dornas, Jacques Yaacoub Bou Khalil, Isabelle Pagnier, Christelle Desnues, Anthony Levasseur, Philippe Colson, Jônatas Abrahão, Bernard La Scola   +20 more
doaj   +1 more source