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Items tagged with: GiantViruses


New #ISEPpapers! Genomic analyses of Symbiomonas scintillans show no evidence for endosymbiotic #bacteria but does reveal the presence of #GiantViruses https://journals.plos.org/plosgenetics/article?id=10.1371%2Fjournal.pgen.1011218 #protists #symbiosis #viruses #genomics #microbes @PLOS by Anna Cho et al.


Giant viral signatures on the Greenland ice sheet

https://doi.org/10.1186/s40168-024-01796-y

#viruses #GiantViruses #polar


A giant virus infecting the amoeboflagellate Naegleria

https://www.nature.com/articles/s41467-024-47308-2

#viruses #giantViruses #microbiology


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."

https://www.nature.com/articles/s41467-023-44548-6

#viruses #GiantViruses #virology


Kratosvirus quantuckense: the history and novelty of an algal bloom disrupting virus and a model for giant virus research

https://doi.org/10.3389/fmicb.2023.1284617

#viruses #marine #ocean #HAB #GiantViruses


Latest taxonomic update for giant viruses, including a new name for the famous mimivirus (now Mimivirus bradfordmassiliense)

Taxonomy for the titans of the virosphere!

https://link.springer.com/article/10.1007/s00705-023-05906-3

#GiantViruses #viruses #virology


#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

https://academic.oup.com/femsre/article/47/5/fuad053/7280998?login=false

#virology


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.

https://doi.org/10.1101/2023.10.16.562556

#viruses #virology #poxviruses #GiantViruses


Nice study on polar giant viruses!

Genomic adaptation of giant viruses in polar oceans

https://www.nature.com/articles/s41467-023-41910-6

#viruses #GiantViruses #virology #oceanography #marine #ocean #polar


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,”"

https://www.sciencenews.org/article/potential-giant-viruses-soil-microbiology

#viruses #giantViruses


Phylogenetic diversity and functional potential of large and cell-associated viruses in the Bay of Bengal

https://www.biorxiv.org/content/10.1101/2023.07.17.548743v1

#viruses #ecology #marine #ocean #giantViruses


#introduction
Hello everyone!
I’m an associate prof at Virginia Tech studying viral diversity. Lately my group has been focusing on giant viruses, but we are also interested in other protist viruses, and the role of viral endogenization in host genome evolution.
#GiantViruses #ViralDiversity #TreeOfLife #Protists #Microbiology #Bioinformatics #Evolution #Virology #Genomics
Recently we have been examining the strange and complex genes encoded in giant virus genomes!
https://doi.org/10.1093/femsre/fuad053


Amazing structural diversity of giant virus-like particles in forest soil

https://www.biorxiv.org/content/10.1101/2023.06.30.546935v1

#viruses #giantViruses #microbiology


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

https://www.biorxiv.org/content/10.1101/2023.06.27.546645v1

#viruses #giantViruses #ocean #marine


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

https://academic.oup.com/mbe/article/40/6/msad134/7190697?login=false

#viruses #GiantViruses #virology


Our latest work on marine giant virus diversity -

Assessing the biogeography of marine giant viruses in four oceanic transects

https://www.nature.com/articles/s43705-023-00252-6

#viruses #marine #ocean #giantviruses


Important study describing a new phylum of herpesvirus relatives that is abundant in the ocean -

Mirusviruses link herpesviruses to giant viruses

https://www.nature.com/articles/s41586-023-05962-4

I was honored to be asked to review this paper! Wonderful work.

#virology #viruses #herpesviruses #giantViruses


Near-atomic architecture of Singapore grouper iridovirus and implications for giant virus assembly

"The viral inner membrane-integrated anchor protein colocalizes with the endoplasmic reticulum (ER), supporting the hypothesis that the biogenesis of the inner membrane is associated with the ER"

Nice confirmation about where the viral inner membrane comes from.

https://www.nature.com/articles/s41467-023-37681-9

#viruses #giantViruses #virology


Widespread Distribution and Evolution of Poxviral Entry-Fusion Complex Proteins in Giant Viruses

https://journals.asm.org/doi/epub/10.1128/spectrum.04944-22

#GiantViruses #Viruses #poxviruses


Giant Virus Infection Signatures Are Modulated by Euphotic Zone Depth Strata and Iron Regimes of the Subantarctic Southern Ocean

https://journals.asm.org/doi/10.1128/msystems.01260-22

#viruses #giantviruses #marine

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