Assessment of viral community functional potential from viral metagenomes may be hampered by contamination with cellular sequences. [PDF]
International audienceAlthough the importance of viruses in natural ecosystems is widely acknowledged, the functional potential of viral communities is yet to be determined.
Debroas, Didier +4 more
core +3 more sources
Thermal Limits and Decline of Synechococcus Under Accelerated Warming and Marine Heatwaves
Marine picophytoplankton, including Synechococcus, contribute ~20% of ocean primary production and are considered thermally resilient. However, 7 years of observations and experiments in the Red Sea show that recent extreme warming reduced Synechococcus abundance. Seawater temperatures during marine heatwaves in 2023–2024 exceeded the thermal limits of
Luthfiyyah Azizah +3 more
wiley +1 more source
Cyanophage dynamics in a tropical urban freshwater lake
Considerable studies have been conducted to quantify and examine free cyanophage particles across a wide range of aquatic systems, but few studies have analyzed the dynamics of host cell fraction cyanophages, and even less is known about tropical ...
Dong Zhang +3 more
doaj +1 more source
A novel uncultured marine cyanophage lineage with lysogenic potential linked to a putative marine Synechococcus 'relic' prophage [PDF]
Marine cyanobacteria are important contributors to primary production in the ocean and their viruses (cyanophages) affect the ocean microbial communities.
Béjà, Oded +5 more
core
Distinct Phage‐Encoded Enzymes for Substitution of Deoxythymidine by Deoxyuridine in Phage Genomes
Distinct enzymes including dCTP deaminases (Dcds), dTMP phosphatases (Dtms), and dTTP pyrophosphatases (Dtt) are found to be responsible for dU‐DNA biosynthesis in the phages PBS1, DSS3_VP1, and PhiR1‐37. Both PhiR1‐37‐derived and synthetic dU‐DNA are resistant to cleavage by restriction enzymes and Cas12a nuclease targeting dT‐containing sites.
Yating Li +7 more
wiley +1 more source
Microcystis aeruginosa forms massive blooms in eutrophic freshwaters, where it is constantly exposed to lytic cyanophages. Unlike other marine cyanobacteria, M.
Daichi Morimoto +4 more
doaj +1 more source
Summary Algal blooms and their demise by viruses drive global‐scale ecological processes in the ocean. These blooms form the foundation of marine food webs, regulate microbial communities, and shape biogeochemical cycles. Although algal populations are constantly infected by viruses, resistant subpopulations frequently emerge after the infection.
Talia S. Shaler +5 more
wiley +1 more source
Cyanophages: Starving the Host to Recruit Resources [PDF]
Phytoplankton and the viruses that infect them are locked in an evolutionary arms race, the nature of which is presently being revealed. A new study shows that cyanophage-mediated inhibition of CO2 fixation enables the phages to recruit photosynthetically formed redox and ATP to fulfill their nucleotide and metabolic demand.
openaire +2 more sources
Cyanophage Diversity and Community Structure in Dead Zone Sediments
Cyanophages are viruses that target cyanobacteria and directly control their abundance via viral lysis. Cyanobacteria are known to cause large blooms in water bodies, substantially contributing to oxygen depletion in bottom waters resulting in areas ...
Elias Broman +4 more
doaj +1 more source
Comparative metagenomic analyses reveal viral-induced shifts of host metabolism towards nucleotide biosynthesis [PDF]
BACKGROUND: Viral genomes often contain metabolic genes that were acquired from host genomes (auxiliary genes). It is assumed that these genes are fixed in viral genomes as a result of a selective force, favoring viruses that acquire specific metabolic ...
Hagay Enav +2 more
core +2 more sources

