Results 31 to 40 of about 289 (102)

The Common Ancestor of Archaea and Eukarya Was Not an Archaeon

Archaea, Volume 2013, Issue 1, 2013., 2013
It is often assumed that eukarya originated from archaea. This view has been recently supported by phylogenetic analyses in which eukarya are nested within archaea. Here, I argue that these analyses are not reliable, and I critically discuss archaeal ancestor scenarios, as well as fusion scenarios for the origin of eukaryotes.
Patrick Forterre, Gustavo Caetano-Anollés   +1 more
wiley   +1 more source

A virophage cross-species infection through mutant selection represses giant virus propagation, promoting host cell survival

, 2020
International audienceVirus adaptation to new hosts is a major cause of infectious disease emergence. This mechanism has been intensively studied in the context of zoonotic virus spillover, due to its impact on global health.
Colson, Philippe, Mougari, Said, Chelkha, Nisrine, Abrahao, Jonatas, La Scola, Bernard, Sahmi-Bounsiar, Dehia, Di Pinto, Fabrizio   +6 more
core   +1 more source

Biological Trajectory of Virophage Research and the Emergence of Marine Virophages: A Scoping Review

Viruses
Virophages are satellite viruses that depend on the replication machinery of giant double-stranded DNA viruses and influence the structure and dynamics of viral communities through multilayered interactions among giant viruses, their hosts, and ...
Min-Jeong Kim, Yu Jin Kim, Hyun Ju Ha, Joon Sang Park, Ika Agus Rini, Sukchan Lee, Taek-Kyun Lee   +6 more
doaj   +1 more source

Smaller Fleas: Viruses of Microorganisms

Scientifica, Volume 2012, Issue 1, 2012., 2012
Life forms can be roughly differentiated into those that are microscopic versus those that are not as well as those that are multicellular and those that, instead, are unicellular. Cellular organisms seem generally able to host viruses, and this propensity carries over to those that are both microscopic and less than truly multicellular.
Paul Hyman, Stephen T. Abedon, Hirofumi Akari, Joaquim Ruiz Blazquez, Giuseppe Comi, Ariel M. Silber   +5 more
wiley   +1 more source

Amoebae, Giant Viruses, and Virophages Make Up a Complex, Multilayered Threesome

Frontiers in Cellular and Infection Microbiology, 2018
Viral infection had not been observed for amoebae, until the Acanthamoeba polyphaga mimivirus (APMV) was discovered in 2003. APMV belongs to the nucleocytoplasmatic large DNA virus (NCLDV) family and infects not only A.
Jan Diesend, Janis Kruse, Monica Hagedorn, Christian Hammann   +3 more
doaj   +1 more source

Variations of the Virome in Raw and Treated Water: A One‐Year Follow‐Up at Six Different Drinking Water Treatment Plants

Environmental Microbiology Reports, Volume 17, Issue 6, December 2025.
This paper describes monitoring of outgoing water from drinking water treatment plants, geographically spread over half of Sweden and sampled every other month for 1 year. We found differences in the virome from the different water sources from each plant as well as differences in virus size and seasonal variation, where we also could detect viruses in
Fredy Saguti, Hao Wang, Marianela Patzi Churqui, Timur Tunovic, Linda Holmer, Ämma Pettersson, Caroline Schleich, Britt‐Marie Pott, Olof Bergstedt, Kristina Nyström, Heléne Norder   +10 more
wiley   +1 more source

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

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

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

Frontiers in Microbiology, 2019
Some giant viruses are ecological agents that are predicted to be involved in the top-down control of single-celled eukaryotic algae populations in aquatic ecosystems.
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

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