Results 71 to 80 of about 933 (157)

What is Life? [PDF]

, 2020
In searching for life in extraterrestrial space, it is essential to act based on an unequivocal definition of life. In the twentieth century, life was defined as cells that self-replicate, metabolize, and are open for mutations, without which genetic ...
Witzany, Guenther
core  

Viral metagenomics of Okavango Delta water pans reveal novel insights into wildlife disease potential

iMetaOmics, Volume 2, Issue 2, June 2025.
Botswana's Seronga region saw a mass elephant die‐off potentially linked to water sources. This study analyzes Okavango Delta metagenomes, uncovering a diversity of viruses and harmful pathogens. Findings highlight the importance of understanding viral ecology in these waters and support One Health's objective in protecting human, animal, and ecosystem
Emilie J. Skoog, Kenosi Kebabonye, Benjamin Klempay, Mangaliso Gondwe, Kaelo Makati, Nlingisisi Babayani, Mosimanegape Jongman, Jeff Bowman, Lihini Aluwihare   +8 more
wiley   +1 more source

Two decades ago, giant viruses were discovered: the fall of an old paradigm. [PDF]

Front Microbiol
Simón D, Ramos N, Lamolle G, Musto H.
europepmc   +3 more sources

Dinucleotide biases in the genomes of prokaryotic and eukaryotic dsDNA viruses and their hosts

Molecular Ecology, Volume 33, Issue 6, March 2024.
Abstract The genomes of cellular organisms display CpG and TpA dinucleotide composition biases. Such biases have been poorly investigated in dsDNA viruses. Here, we show that in dsDNA virus, bacterial, and eukaryotic genomes, the representation of TpA and CpG dinucleotides is strongly dependent on genomic G + C content.
Diego Forni, Uberto Pozzoli, Rachele Cagliani, Manuela Sironi   +3 more
wiley   +1 more source

Amoebae as Battlefields for Bacteria, Giant Viruses, and Virophages [PDF]

Journal of Virology, 2013
ABSTRACT When amoebae are simultaneously infected with Acanthamoeba polyphaga Mimivirus (APM) and the strictly intracellular BABL1 bacterium, the latter is always lost after serial subculturing. We showed that the virophage Sputnik 1, by reducing APM fitness, preserved BABL1 growth in acute and chronic ...
Meriem, Slimani, Isabelle, Pagnier, Didier, Raoult, Bernard, La Scola   +3 more
openaire   +2 more sources

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

Phylogeny of the Varidnaviria Morphogenesis Module: Congruence and Incongruence With the Tree of Life and Viral Taxonomy

Frontiers in Microbiology, 2021
Double-stranded DNA viruses of the realm Varidnaviria (formerly PRD1-adenovirus lineage) are characterized by homologous major capsid proteins (MCPs) containing one (kingdom: Helvetiavirae) or two β-barrel domains (kingdom: Bamfordvirae) known as the ...
Anthony C. Woo, Anthony C. Woo, Anthony C. Woo, Morgan Gaia, Julien Guglielmini, Violette Da Cunha, Violette Da Cunha, Patrick Forterre, Patrick Forterre   +8 more
doaj   +1 more source

Viral communities in millipede guts: Insights into the diversity and potential role in modulating the microbiome

Environmental Microbiology, Volume 26, Issue 2, February 2024.
Relative abundance of the metagenome‐assembled viral genomes (bottom arch) identified in the hindgut metagenomes and metatranscriptomes of Epibolus pulchripes and Glomeris connexa. The top arch shows the coverage of each viral phylum mapped to the identified metagenome‐assembled viral genomes in transcripts per million.
Julius Eyiuche Nweze, Johannes Sergej Schweichhart, Roey Angel   +2 more
wiley   +1 more source

Giant viruses of amoebas: an update

Frontiers in Microbiology, 2016
During the 12 past years, five new or putative virus families encompassing several members, namely Mimiviridae, Marseilleviridae, pandoraviruses, faustoviruses, and virophages were described.
Sarah eAherfi, Sarah eAherfi, Philippe eColson, Philippe eColson, Bernard eLa Scola, Bernard eLa Scola, Didier eRaoult, Didier eRaoult   +7 more
doaj   +1 more source

Viruses as living processes [PDF]

, 2016
John Dupre University of Exeter Egenis Byrne House, St German's Road Exeter EX4 4PJ UK Guttinger University of Exeter Egenis Byrne House, St German's Road Exeter EX4 4PJ United KingdomThe view that life is composed of distinct entities with well-defined ...
Dupré, John, Guttinger, S
core   +1 more source