Uri Sheyn
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View article: Cryptic infection of a giant virus in a unicellular green alga
Cryptic infection of a giant virus in a unicellular green alga Open
Latency is a common strategy in a wide range of viral lineages, but its prevalence in giant viruses remains unknown. In this work, we describe a 617–kilo–base pairs integrated giant viral element in the model green alga Chlamydomonas reinh…
View article: Mesoscale eddies shape <i>Prochlorococcus</i> community structure and dynamics in the oligotrophic open ocean
Mesoscale eddies shape <i>Prochlorococcus</i> community structure and dynamics in the oligotrophic open ocean Open
Mesoscale eddies, horizontally rotating currents sometimes referred to as “ocean weather,” influence open ocean macronutrient distributions, primary production, and microbial community structure. Such eddies impact ecosystems like the Nort…
View article: Latent infection of an active giant endogenous virus in a unicellular green alga
Latent infection of an active giant endogenous virus in a unicellular green alga Open
Latency is a common strategy in a wide range of viral lineages, but its prevalence in giant viruses remains unknown. Here we describe the activity and viral production from a 617 kbp integrated giant viral element in the model green alga C…
View article: Daily turnover of active giant virus infection during algal blooms revealed by single-cell transcriptomics
Daily turnover of active giant virus infection during algal blooms revealed by single-cell transcriptomics Open
Giant viruses infect many unicellular eukaryotes, including algae that form massive oceanic blooms. Despite the major impact of viruses on the marine ecosystem, the ability to quantify and assess active viral infection in nature remains a …
View article: Virologs, viral mimicry, and virocell metabolism: the expanding scale of cellular functions encoded in the complex genomes of giant viruses
Virologs, viral mimicry, and virocell metabolism: the expanding scale of cellular functions encoded in the complex genomes of giant viruses Open
The phylum Nucleocytoviricota includes the largest and most complex viruses known. These “giant viruses” have a long evolutionary history that dates back to the early diversification of eukaryotes, and over time they have evolved elaborate…
View article: Nitrogen Fixation in Mesoscale Eddies of the North Pacific Subtropical Gyre: Patterns and Mechanisms
Nitrogen Fixation in Mesoscale Eddies of the North Pacific Subtropical Gyre: Patterns and Mechanisms Open
Mesoscale eddies have been shown to support elevated dinitrogen (N 2 ) fixation rates (NFRs) and abundances of N 2 ‐fixing microorganisms (diazotrophs), but the mechanisms underlying these observations are not well understood. We sampled t…
View article: Daily turnover of active giant virus infection during algal blooms revealed by single-cell transcriptomics
Daily turnover of active giant virus infection during algal blooms revealed by single-cell transcriptomics Open
Viruses are the most abundant biological entity in the ocean and play a significant role in shaping the marine ecosystem. The past two decades have revealed an outstanding diversity of giant viruses infecting protists across the tree of li…
View article: Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms"
Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms" Open
Data accompanying the manuscript "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms", submitted to Global Biogeochemical Cycles. Datasets refer to the 2017 MESO-SCOPE and 2018 Hawaiian Edd…
View article: Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms"
Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms" Open
Data accompanying the manuscript "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms", submitted to Global Biogeochemical Cycles. Datasets refer to the 2017 MESO-SCOPE and 2018 Hawaiian Edd…
View article: Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms"
Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms" Open
Data accompanying the manuscript "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms", submitted to Global Biogeochemical Cycles. Datasets refer to the 2017 MESO-SCOPE and 2018 Hawaiian Edd…
View article: Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms"
Accompanying data for "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms" Open
Data accompanying the manuscript "Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms", submitted to Global Biogeochemical Cycles. Datasets refer to the 2017 MESO-SCOPE and 2018 Hawaiian Edd…
View article: Iron Depletion in the Deep Chlorophyll Maximum: Mesoscale Eddies as Natural Iron Fertilization Experiments
Iron Depletion in the Deep Chlorophyll Maximum: Mesoscale Eddies as Natural Iron Fertilization Experiments Open
In stratified oligotrophic waters, phytoplankton communities forming the deep chlorophyll maximum (DCM) are isolated from atmospheric iron sources above and remineralized iron sources below. Reduced supply leads to a minimum in dissolved i…
View article: Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms
Nitrogen fixation in mesoscale eddies of the North Pacific Subtropical Gyre: patterns and mechanisms Open
1. Abstract Mesoscale eddies have been shown to support elevated dinitrogen (N 2 ) fixation rates (NFRs) and abundances of N 2 -fixing microorganisms (diazotrophs), but the mechanisms underlying these observations are not well understood. …
View article: Visualizing active viral infection reveals diverse cell fates in synchronized algal bloom demise
Visualizing active viral infection reveals diverse cell fates in synchronized algal bloom demise Open
Significance Despite years of research in aquatic virology, we remain unable to estimate viral-induced mortality in the ocean and, consequently, to resolve viral impact on nutrient fluxes and microbial dynamics. Here, we assess active infe…
View article: Visualizing active viral infection reveals diverse cell fates in synchronized algal bloom demise
Visualizing active viral infection reveals diverse cell fates in synchronized algal bloom demise Open
Summary Marine viruses are considered as major evolutionary and biogeochemical drivers of microbial life, through metabolic reprogramming of their host and cell lysis that modulates nutrient cycling 1 , primary production and carbon export…
View article: A single-cell view on alga-virus interactions reveals sequential transcriptional programs and infection states
A single-cell view on alga-virus interactions reveals sequential transcriptional programs and infection states Open
Single-cell dual RNA sequencing reveals giant virus infection dynamics in a marine bloom-forming alga.
View article: Tracking infection dynamics at single-cell level reveals highly resolved expression programs of a large virus infecting algal blooms
Tracking infection dynamics at single-cell level reveals highly resolved expression programs of a large virus infecting algal blooms Open
Nucleocytoplasmic large DNA viruses have the largest genomes among all viruses and infect diverse eukaryotes across various ecosystems, but their expression regulation and infection strategies are not well understood. We profiled single-ce…
View article: Unmasking cellular response of a bloom-forming alga to viral infection by resolving expression profiles at a single-cell level
Unmasking cellular response of a bloom-forming alga to viral infection by resolving expression profiles at a single-cell level Open
Infection by large dsDNA viruses can lead to a profound alteration of host transcriptome and metabolome in order to provide essential building blocks to support the high metabolic demand for viral assembly and egress. Host response to vira…
View article: Bacterial virulence against an oceanic bloom-forming phytoplankter is mediated by algal DMSP
Bacterial virulence against an oceanic bloom-forming phytoplankter is mediated by algal DMSP Open
A new alga-bacterium model system sheds light on mortality factors affecting phytoplankton bloom demise and sulfur cycling.
View article: Bacterial virulence against an oceanic bloom-forming phytoplankter is mediated by algal DMSP
Bacterial virulence against an oceanic bloom-forming phytoplankter is mediated by algal DMSP Open
Emiliania huxleyi is a bloom forming microalga that impacts the global sulfur cycle by producing large amounts of dimethylsulfoniopropionate (DMSP) and its volatile metabolic product dimethyl sulfide (DMS). Top-down regulation of E. huxley…
View article: Expression profiling of host and virus during a coccolithophore bloom provides insights into the role of viral infection in promoting carbon export
Expression profiling of host and virus during a coccolithophore bloom provides insights into the role of viral infection in promoting carbon export Open
The cosmopolitan coccolithophore Emiliania huxleyi is a unicellular eukaryotic alga that forms vast blooms in the oceans impacting large biogeochemical cycles. These blooms are often terminated due to infection by the large dsDNA virus, E.…
View article: Modulation of host ROS metabolism is essential for viral infection of a bloom-forming coccolithophore in the ocean
Modulation of host ROS metabolism is essential for viral infection of a bloom-forming coccolithophore in the ocean Open
The cosmopolitan coccolithophore Emiliania huxleyi is a unicellular eukaryotic alga responsible for vast blooms in the ocean. These blooms have immense impact on large biogeochemical cycles and are terminated by a specific large double-str…