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Items tagged with: viruses
Another interesting study suggesting that giant viruses can control phototaxis in their hosts during infection
"Hijacking of internal calcium dynamics by intracellularly residing viral rhodopsins"
"... we show here that light irradiation reversibly modified tail movements of OLPVR1-expressing frog tadpoles."
nature.com/articles/s41467-023…
#viruses #GiantViruses #virology
Hijacking of internal calcium dynamics by intracellularly residing viral rhodopsins - Nature Communications
Rhodopsins are ubiquitous light-driven membrane proteins that have diverse functions in nature, and value as optogenetics tools.Nature
Daily turnover of active giant virus infection during algal blooms revealed by single-cell transcriptomics
"A consistent percent of infected coccolithophores displayed the early phase of viral replication for several consecutive days, indicating a daily turnover and continuous virocell-associated metabolite production, potentially affecting the surrounding microbiome"
#Viruses of #Plankton: On the Edge of the Viral Frontier
Viruses of Plankton: On the Edge of the Viral Frontier
The field of aquatic viral ecology has continued to evolve rapidly over the last three decades [...]MDPI
Gene duplication as a major force driving the genome expansion in some giant viruses
Contrasting drivers of abundant phage and prokaryotic communities revealed in diverse coastal ecosystems
nature.com/articles/s43705-023…
#marine #viruses #phages #ocean #microbiology #virology
Contrasting drivers of abundant phage and prokaryotic communities revealed in diverse coastal ecosystems - ISME Communications
ISME Communications - Contrasting drivers of abundant phage and prokaryotic communities revealed in diverse coastal ecosystemsNature
Kratosvirus quantuckense: the history and novelty of an algal bloom disrupting virus and a model for giant virus research
doi.org/10.3389/fmicb.2023.128…
#viruses #marine #ocean #HAB #GiantViruses
Kratosvirus quantuckense: the history and novelty of an algal bloom disrupting virus and a model for giant virus research
Since the discovery of the first “giant virus,” particular attention has been paid toward isolating and culturing these large DNA viruses through Acanthamoeba spp. bait systems.Frontiers
Ongoing shuffling of protein fragments diversifies core viral functions linked to interactions with bacterial hosts
nature.com/articles/s41467-023…
#phages #viruses #evolution #genomics
Ongoing shuffling of protein fragments diversifies core viral functions linked to interactions with bacterial hosts - Nature Communications
Proteins are composed of distinct functional domains, each serving a specific role. Here, Smug et al. show that phages are able to shuffle fragments of their proteins and this predominantly occurs in proteins involved in bacterial host interactions.Nature
New #ISEPpapers! The #protist #Aurantiochytrium has universal subtelomeric rDNAs and is a host for #mirusviruses: Jackie Collier et al. cell.com/current-biology/fullt…
#protists #microbes #protistology #microbiology #viruses #virology #genomics
PhD position in viral evolution and diversity @foaylward
Virginia Tech
Funded PhD positions in the Aylward Lab to study the #evolution and #genomics of giant #viruses. Both computational and wet-lab projects available.
See the full job description on jobRxiv: jobrxiv.org/job/virginia-tech-…
#ScienceJobs #hiring #research
Blacksburg #UnitedStatesUS ...
jobrxiv.org/job/virginia-tech-…
PhD position in viral evolution and diversity
Post a job in 3min, or find thousands of job offers like this one at jobRxiv!jobRxiv
Marine #microorganisms are crucial for #ocean health.
#Bacteria, #archaea, #fungi, #algae and #viruses make up most of the biomass in the seas and form the base of marine food webs.
They support nutrient cycling and drive crucial biogeochemical processes, including key steps in the carbon, nitrogen and silicon cycles.
Ocean modelling must evolve to take their biological complexity into account.
#biology #ecology #oceans
nature.com/articles/d41586-023…
‘Oceans are hugely complex’: modelling marine microbes is key to climate forecasts
Microorganisms are the engines that drive most marine processes. Ocean modelling must evolve to take their biological complexity into account.Tagliabue, Alessandro
Latest taxonomic update for giant viruses, including a new name for the famous mimivirus (now Mimivirus bradfordmassiliense)
Taxonomy for the titans of the virosphere!
link.springer.com/article/10.1…
#GiantViruses #viruses #virology
Taxonomic update for giant viruses in the order Imitervirales (phylum Nucleocytoviricota) - Archives of Virology
Large DNA viruses in the phylum Nucleocytoviricota, sometimes referred to as “giant viruses” owing to their large genomes and virions, have been the subject of burgeoning interest over the last decade.SpringerLink
Vampire viruses prey on other #viruses to replicate themselves
A virus that latches onto the neck of another virus
Vampire viruses prey on other viruses to replicate themselves − and may hold the key to new antiviral therapies
Researchers discovered a satellite virus latching onto the neck of another virus called MindFlayer. Studying the viral arms race between similar viruses could lead to new ways to fight infections.The Conversation
Phylogenetic diversity and functional potential of large and cell-associated #viruses in the Bay of Bengal
Nice work from @scubalaina @giant_virus et al!
#GiantViruses encode many strange genes in their genomes - partial TCA cycles, actins and myosins, nutrient transporters, etc
What are they doing with all of these crazy genes?
We discuss this in a recent article - big thanks to all of the collaborators who were willing to help write an extensive review!
Virologs, viral mimicry, and #virocell metabolism: the expanding scale of cellular functions encoded in the complex genomes of giant #viruses
Long-read-based genome assembly reveals numerous endogenous viral elements in the green algal bacterivore Cymbomonas tetramitiformis
Abstract. The marine tetraflagellate Cymbomonas tetramitiformis has drawn attention as an early diverging green alga that uses a phago-mixotrophic mode of nutriGyaltshen, Yangtsho (Oxford University Press)
Lessons from Chloroviruses: the Complex and Diverse Roles of Viruses in Food Webs
Virophages are viruses that infect giant viruses, typically resulting in a lower burst size for the giant virus. In our latest preprint we report virophage-like sequences associated with insect poxviruses.
Their genomes of these elements are really interesting. This also opens up the possibility that hyperparasitic viruses are associated with a much broader range of DNA viruses than is commonly thought.
doi.org/10.1101/2023.10.16.562…
#viruses #virology #poxviruses #GiantViruses
Polinton-like Viruses Associated with Entomopoxviruses Provide Insight into Replicon Evolution
Polinton-like viruses (PLVs) are a diverse group of small integrative dsDNA viruses that infect diverse eukaryotic hosts. Many PLVs are hypothesized to parasitize viruses in the phylum Nucleocytoviricota for their own propagation and spread.bioRxiv
Nice study on polar giant viruses!
Genomic adaptation of giant viruses in polar oceans
nature.com/articles/s41467-023…
#viruses #GiantViruses #virology #oceanography #marine #ocean #polar
Genomic adaptation of giant viruses in polar oceans - Nature Communications
This study examines the biogeography and functional gene repertoires of marine eukaryote-infecting large and giant DNA viruses.Nature
Probing the permafrost that could release 50,000-year-old viruses
Discoveries by virologist Jean-Michel Claverie shine a light on a little-known risk of global warming as it thaws ground frozen for millenniumsLiza Tetley,Bhuma Shrivastava (The Japan Times)
Had enough of #viruses?
Here are the #fungi! knowablemagazine.org/article/h…
We live in the age of infectious diseases resurgence
"We are in the midst of the "Platinum Age of Virus Discovery", an era characterized by the exponential growth in the discovery of virus biodiversity. "
A Parasite Odyssey: An RNA virus concealed in Toxoplasma gondii
Characterization of crAss-like phage isolates highlights Crassvirales genetic heterogeneity and worldwide distribution
nature.com/articles/s41467-023…
#phages #bacteriophage #viruses
Characterization of crAss-like phage isolates highlights Crassvirales genetic heterogeneity and worldwide distribution - Nature Communications
Here, the authors report the isolation and genetic characterization of 25 unique crAss-like phages (termed “crAssBcn”) infecting Bacteroides intestinalis, and show that CrAssBcn phages are commonly found in fecal samples from people around the globe,…Nature
A fantastical world of potential giant viruses lurks beneath the soil
"These and other peculiar-looking shapes “clearly tell us that we’ve underestimated how structurally diverse these viruses are,”"
sciencenews.org/article/potent…
A fantastical world of potential giant viruses lurks beneath the soil
Giant viruses were already known for their large sizes. A close look at a scoop of soil shows that they may come in a variety of funky shapes as well.Meghan Rosen (Science News Magazine)
Scientists discover how parasites of #viruses drive #superbug #evolution.
#phages #gene_transfer #lateral_transduction
phys.org/news/2023-08-scientis…
Scientists discover how parasites of viruses drive superbug evolution
In a study published in Cell, scientists from the National University of Singapore (NUS) and Imperial College London have discovered a new way by which bacteria transmit their genes, enabling them to evolve much faster than previously understood.Science X (Phys.org)
Phylogenetic diversity and functional potential of large and cell-associated viruses in the Bay of Bengal
biorxiv.org/content/10.1101/20…
#viruses #ecology #marine #ocean #giantViruses
Phylogenetic diversity and functional potential of large and cell-associated viruses in the Bay of Bengal
The Bay of Bengal (BoB), the largest bay in the world, provides valuable ecosystem services such as fishing and recreation to millions of people living along its coast and has a significant economic value.bioRxiv
Where do #viruses hide in the human body?
📌 Virus particles often hide in “immunoprivileged sites” around the human body, also sometimes called sanctuary sites, that our immune systems don’t monitor or protect as closely as the rest of our bodies. These include the brain, spinal cord, pregnant uterus, testes, and eyes, for which damage by immune cells would be highly problematic
bmj.com/content/382/bmj.p1156.…
Where do viruses hide in the human body?
The question of how SARS-CoV-2 persists in the body has refocused scientists on the question of where viruses persist in humans more generally.The BMJ
Amazing structural diversity of giant virus-like particles in forest soil
biorxiv.org/content/10.1101/20…
#viruses #giantViruses #microbiology
Amazing structural diversity of giant virus-like particles in forest soil
Large DNA viruses of the phylum Nucleocytoviricota infect diverse eukaryotic hosts from protists to humans, with profound consequences for aquatic and terrestrial ecosystems.bioRxiv
Happy to share a collaborative preprint with Assaf Vardi's group in which we use single cell transcriptomics to link giant viruses with their native hosts during a marine algal bloom!
This approach is quite sensitive - we were able to identify viruses infecting one protist group that made up <0.5% of the community.
Homing in on the rare virosphere reveals the native host of giant viruses
biorxiv.org/content/10.1101/20…
#viruses #giantViruses #ocean #marine
Homing in on the rare virosphere reveals the native host of giant viruses
Giant viruses (phylum Nucleocytoviricota) are globally distributed in aquatic ecosystems They play major roles as evolutionary drivers of eukaryotic plankton and regulators of global biogeochemical cycles.bioRxiv
It's been a big mystery why giant viruses encode so many proteins involved in vesicular transport and cytoskeletal dynamics. This interesting paper examined a dynamin homolog and found evidence that it's involved in mitochondrial membrane remodelling during infection.
A Novel Group of Dynamin-Related Proteins Shared by Eukaryotes and Giant Viruses Is Able to Remodel Mitochondria From Within the Matrix
academic.oup.com/mbe/article/4…
#viruses #GiantViruses #virology
A Novel Group of Dynamin-Related Proteins Shared by Eukaryotes and Giant Viruses Is Able to Remodel Mitochondria From Within the Matrix
Abstract. The diverse GTPases of the dynamin superfamily play various roles in the cell, as exemplified by the dynamin-related proteins (DRPs) Mgm1 and Opa1, whSheikh, Shaghayegh (Oxford University Press)
Referenced link: phys.org/news/2023-06-viruses-…
Discuss on discu.eu/q/phys.org/news/2023-…
Originally posted by Phys.org / @physorg_com: nitter.platypush.tech/physorg_…
Are #viruses keeping #sealice at bay in wild salmon? @ubcnews @PLOSPathogens phys.org/news/2023-06-viruses-…
Are viruses keeping sea lice at bay in wild salmon?
More than 30 previously unknown RNA viruses in sea lice have been identified by University of British Columbia (UBC) researchers.Science X (Phys.org)
Built Into the Genome of the Microbes – Scientists Uncover Over 30,000 “Hidden” Viruses
scitechdaily.com/built-into-th…
Built Into the Genome of the Microbes – Scientists Uncover Over 30,000 “Hidden” Viruses
Unveiled within the DNA of unicellular organisms lie thousands of enigmatic viruses. Researchers at the University of Innsbruck, utilizing the high-performance computing cluster known as "Leo," have identified more than 30,000 new viruses embedded wi…Colin Collins (SciTechDaily)
It was wonderful to speak with Vincent Racaniello during the Aquatic Virus Workshop in Quebec last week! Fun conversation.
#viruses #ecology #evolution #virology
TWiV 1011: Aquatic viruses
Vincent travels to Québec City, Canada and the 11th Aquatic Virus Workshop, where he speaks with Frank Aylward and Jed Furman about the research of their lab...YouTube
'#Bioprospecting' technique uncovers #viruses that can kill deadly superbugs.
#phages #antimicrobial #epitopes #porin
phys.org/news/2023-05-bioprosp…
'Bioprospecting' technique uncovers viruses that can kill deadly superbugs
In a modern take on the Victorian gold rush, a Monash University-led project is successfully "bioprospecting" for viruses known as phages that can kill deadly superbugs.Cheryl Critchley (Phys.org)
plos.io/3M9uUTH
Beyond pathogenesis: Detecting the full spectrum of ecological interactions in the virosphere
Viral interactions with their hosts are complex and can be beneficial, yet the public perception of viruses is generally negative.plos.io
Beyond pathogenesis: Detecting the full spectrum of ecological interactions in the virosphere
"Viral interactions with their hosts are complex and some non-pathogenic viruses could have potential benefits to society. However, viral research is seldom designed to identify viral mutualists, a gap that merits considering new experimental designs."
journals.plos.org/plosbiology/…
#viruses #pathogens #symbiosis
Beyond pathogenesis: Detecting the full spectrum of ecological interactions in the virosphere
Viral interactions with their hosts are complex and can be beneficial, yet the public perception of viruses is generally negative.journals.plos.org
Important study from Bellas et al showing that protists have a huge diversity of endogenous DNA viruses in their genomes!
Large-scale invasion of unicellular eukaryotic genomes by integrating DNA viruses
pnas.org/doi/10.1073/pnas.2300…
And a commentary about these exciting findings from @giant_virus and myself -
Endogenous DNA viruses take center stage in eukaryotic genome evolution
Viral infections likely mediate microbial controls on ecosystem responses to global warming
academic.oup.com/femsec/articl…
Viral infections likely mediate microbial controls on ecosystem responses to global warming
We provide a roadmap for understanding how viral infections within microbial food webs may mediate the effects of global warming on ecosystem carbon and nutrienWieczynski, Daniel J (Oxford University Press)
Hijacking strategy mapped for hundreds of #viruses.
#infection #protein #motif #phages
phys.org/news/2023-05-hijackin…
Hijacking strategy mapped for hundreds of viruses
One strategy that viruses use to take over a host cell is to mimic small parts of the cell's proteins called motifs.Science X (Phys.org)