Results 51 to 60 of about 960 (140)

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

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

Exploring nucleo-cytoplasmic large DNA viruses in Tara Oceans microbial metagenomes [PDF]

, 2013
Nucleo-cytoplasmic large DNA viruses (NCLDVs) constitute a group of eukaryotic viruses that can have crucial ecological roles in the sea by accelerating the turnover of their unicellular hosts or by causing diseases in animals. To better characterize the
Acinas, Silvia G., Bork, Peer, Claverie, Jean-Michel, Clerissi, Camille, de Vargas, Colomban, Department of Applied Biological Sciences (DBIT), Vrije Universiteit Brussel, Brussels, Belgium, Department of Applied Biological Sciences (DBIT), Vrije Universiteit Brussel, Brussels, Belgium, Department of Applied Biological Sciences (DBIT), Vrije Universiteit Brussel, Brussels, Belgium, Desdevises, Yves, Faust, Karoline, Ferrera, Isabel, Grimsley, Nigel, Hingamp, Pascal, Jaillon, Olivier, Kandels-Lewis, Stefanie, Karsenti, Eric, Lima-Medez, Gipsi, Moreau, Hervé, Not, Fabrice, Ogata, Hiroyuki, Pesant, Stéphane, Poulain, Julie, Raes, Jeroen, Sarmento, Hugo, Subirana, Lucie, Sunagawa, Shinichi, Villar, Emilie, Wincker, Patrick   +27 more
core   +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

Novel virophages discovered in a freshwater lake in China

Frontiers in Microbiology, 2016
Virophages are small double-stranded DNA viruses that are parasites of giant DNA viruses that infect unicellular eukaryotes. Here we identify a novel group of virophages, named Dishui Lake virophages (DSLVs) that were discovered in Dishui Lake (DSL): an ...
Chaowen eGong, Weijia eZhang, Xuewen eZhou, Hongming eWang, Guowei eSun, Jinzhou eXiao, Yingjie ePan, Shuling eYan, Yongjie eWang   +8 more
doaj   +1 more source

The discovery of CRISPR in archaea and bacteria [PDF]

, 2016
CRISPR-Cas are self-/nonself-discriminating systems found in prokaryotic cells. They represent a remarkable example of molecular memory that is hereditarily transmitted.
Mojica, Francisco J.M., Rodríguez Valera, Francisco   +1 more
core   +2 more sources

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

MG-Digger: an automated pipeline to search for giant virus-related sequences in metagenomes

Frontiers in Microbiology, 2016
The number of metagenomic studies conducted each year is growing dramatically. Storage and analysis of such big data is difficult and time-consuming. Interestingly, analysis shows that environmental and human metagenomes include a significant amount of ...
Jonathan eVerneau, Anthony eLevasseur, Didier eRaoult, Bernard eLa Scola, Philippe eColson   +4 more
doaj   +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