Year: 2022

FEW PHYTOPLANKTON VIRUSES CULTURED. "With increased awareness of the potential regulation of phytoplankton dynamics by viruses, efforts have been made to establish virus-phytoplankton model systems in culture. Although virus-like particles have been found in most classes of eukaryotic unicellular photoautotrophs, at present, there are only approximately a dozen phytoplankton viruses in culture. Most of these infect bloom-forming species and about half infect harmful algal bloom species."" " http://aem.asm.org/content/70/6/3700.full View in LinkedIn

PHYTOPLANKTON VIRUSES DATABASE IS THIN. "Putative complete genomes of ssDNA viruses were assembled, almost doubling the number of ssDNA viral genomes in databases. These comprised 129 genetically distinct groups, each represented by at least one complete genome that had no recognizable similarity to each other or to other virus sequences." The tip of the iceberg. Our oceans are almost as unknown to us as Mars. " " http://www.ncbi.nlm.nih.gov/m/pubmed/23842650/ View in LinkedIn

RAPID LIFE CYCLES FACILITATE ADAPTABILITY. "Oceanic phytoplankton (cyanobacteria and eukaryotic microalgae) are responsible for over half of the Earth's primary production. The high level of biological production by microalgae is principally due to their fast turnover rate of 2–6 d on average, relative to 19 yr for land plants."" " http://lnkd.in/dWGhytf View in LinkedIn

PHYTOPLANKTON BLOOMS FOLLOWED BY VIRAL BLOOMS. "The productive bloom transitioned from a diatom to a pico- and nanoplankton-dominated system, resulting in chlorophyll a concentrations up to 2.43 μg L(-1) . Virus abundances fluctuated c. 10-fold (1.8 × 10(10) -1.3 × 10(11) L(-1) ) over 16 days." The changing phytoplankton populations successions reflect the domination by the fittest species for that environment. " " http://www.ncbi.nlm.nih.gov/m/pubmed/22092871/ View in LinkedIn

PLANKTON INFECTING VIRUSES "are estimated to be the most abundant biological entity in the world’s oceans. Knowledge about the role of past phytoplankton-infecting viruses is essential for more precise paleoecological assessments as viral infection often results in lysis of plankton cells and greatly affects plankton distributions. Despite their importance, essentially nothing was known about phytoplankton-virus interactions in the past."" " http://lnkd.in/dg8ECmc View in LinkedIn

VIRUSES CONTROL MARINE PHYTOPLANKTON and are super abundant. "Viruses are the most abundant organism in seawater across all the world's oceans. Though they are believed to be capable of infecting all phytoplankton species their role in regulating plankton population levels is not well understood."" " http://eprints.soton.ac.uk/63857/ View in LinkedIn

THE VIRAL SHUNT. "Ocean viruses were the inspiration for early hypotheses of the so-called “viral shunt,” by which viral killing of microbial hosts redirects carbon and nutrients away from larger organisms and back toward other microorganisms. Furthermore, researchers analyzing oceanic life have discovered many novel viruses that defy much of the conventional wisdom about what a virus is and what a virus does."" " http://lnkd.in/dzmPw57 View in LinkedIn

VIRAL LOOP OF PHYTOPLANKTON VIRUSES" ""mediate carbon and nutrient transfer from the particulate form (bacteria) to the dissolved form—the so-called viral loop through which up to a quarter of the organic matter in the sea flows. Hence, marine viruses directly affect ocean-scale processes and global biogeochemical cycles."" " http://www.annualreviews.org/eprint/zR9Mryi7RSmFEZFUsNZT/full/10.1146/annurev-marine-010213-135108 View in LinkedIn

NOVEL VIRUSES DISCOVERED. "Two new viral families whose members are the largest known viruses based on the sizes of the capsid and the genome; mimiviruses and marseilleviruses exhibit several unexpected and remarkable features. Their genomes encode proteins involved in translation, these viruses harbour messenger ribonucleic acid in addition to their double‐stranded deoxyribonucleic acid (DNA) genome, and their gene repertoire indicates that they have a common ancestral origin with other large DNA viruses."" " http://www.els.net/WileyCDA/ElsArticle/refId-a0024409.html View in LinkedIn

VIRUSES MUCK UP DARWIN'S TREE OF LIFE. "The tree concept is challenged by the occurrence of horizontal gene transfer and ... by the omission of viruses. Viral genomics have revealed an unexpected size and distinctness of the viral DNA sequence space. Comparative genomics has shown elements of vertical evolution in some groups of viruses. Furthermore, structural biology has demonstrated links between viruses infecting the three domains of life."" " http://rstb.royalsocietypublishing.org/content/364/1527/2263.full View in LinkedIn