Results 31 to 40 of about 1,238 (172)

Polinton-like viruses are abundant in aquatic ecosystems [PDF]

open access: yesMicrobiome, 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

Novel virophages discovered in a freshwater lake in China [PDF]

open access: yesFrontiers 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   +8 more
doaj   +4 more sources

Structural and Mechanistic Analyses Reveal a Unique Cas4-like Protein in the Mimivirus Virophage Resistance Element System

open access: yesiScience, 2018
Summary: A clustered regularly interspaced short palindromic repeats (CRISPR)-like “mimivirus virophage resistance element” (MIMIVIRE) system, which contains specific cascade genes and a CRISPR array against virophages, was reported in mimiviruses.
Chao Dou   +9 more
doaj   +2 more sources

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

open access: yesbioRxiv
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 their control of microbial communities remains a ...
A. del Arco, Lutz Becks
semanticscholar   +2 more sources

Quantitative Assessment of Nucleocytoplasmic Large DNA Virus and Host Interactions Predicted by Co-occurrence Analyses. [PDF]

open access: yesmSphere, 2021
Nucleocytoplasmic large DNA viruses (NCLDVs) are highly diverse and abundant in marine environments. However, the knowledge of their hosts is limited because only a few NCLDVs have been isolated so far.
Meng L   +6 more
europepmc   +3 more sources

Virophages and Their Interactions with Giant Viruses and Host Cells [PDF]

open access: yesProteomes, 2018
Virophages are small dsDNA viruses that were first isolated in association with some giant viruses (GVs), and then found in metagenomics samples. They encode about 20–34 proteins.
Haitham Sobhy
doaj   +3 more sources

Genome-resolved biogeography of Phaeocystales, cosmopolitan bloom-forming algae [PDF]

open access: yesNature Communications
Phaeocystales, comprising the genus Phaeocystis and an uncharacterized sister lineage, are nanoplanktonic haptophytes widespread in the global ocean. Several species form mucilaginous colonies and influence key biogeochemical cycles, yet their underlying
Zoltán Füssy   +35 more
doaj   +2 more sources

Virophages Found in Viromes from Lake Baikal. [PDF]

open access: yesBiomolecules, 2023
In this study, a previously little-studied group of viruses—virophages—was searched for and identified in the viromes of the ancient oligotrophic Lake Baikal. Virophages are small dsDNA viruses that parasitize giant viruses (e.g., Mimiviridae), which in turn affect unicellular eukaryotes.
Potapov SA, Belykh OI.
europepmc   +4 more sources

Virophage control of antarctic algal host–virus dynamics [PDF]

open access: yesProceedings of the National Academy of Sciences, 2011
Viruses are abundant ubiquitous members of microbial communities and in the marine environment affect population structure and nutrient cycling by infecting and lysing primary producers. Antarctic lakes are microbially dominated ecosystems supporting truncated food webs in which viruses exert a major influence on the microbial loop.
Sheree Yau   +10 more
semanticscholar   +3 more sources

Open questions in the social lives of viruses

open access: yesJournal of Evolutionary Biology, Volume 36, Issue 11, Page 1551-1567, November 2023., 2023
Social interactions among viruses are diverse and pervasive, with the potential to affect every stage of the viral lifecycle. Here, we explore some of the challenges and opportunities that these interactions present for evolutionary biology. Abstract Social interactions among viruses occur whenever multiple viral genomes infect the same cells, hosts ...
Asher Leeks   +7 more
wiley   +1 more source

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