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Dinodnavirus
''Dinodnavirus'' is a genus of viruses that infect dinoflagellates.Tarutani K, Nagasaki K, Itakura S, Yamaguchi M (2001) Isolation of a virus infecting the novel shellfish-killing dinoflagellate ''Heterocapsa circularisquama''. Aquat Microb Ecol 23:103–111 This genus belongs to the clade of nucleocytoplasmic large DNA viruses. The name is derived from 'dino' (dinoflagellate) and DNA (from its genome). The only species in the genus is ''Heterocapsa circularisquama DNA virus 01''. __TOC__ Virology The virus has an icosahedral capsid ~200 nanometers in diameter. The genome is a single molecule of double stranded DNA of a ~356-kilobases. It infects the dinoflagellate '' Heterocapsa circularisquama''. During replication virions emerge from a specific cytoplasm compartment – the 'viroplasm' – which is created by the virus.Nagasaki K, Tomaru Y, Tarutani K, Katanozaka N, Yamanaka S, Tanabe H, Yamaguchi M (2003) Growth characteristics and intraspecies host specificity of a large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nucleocytoplasmic Large DNA Virus
''Nucleocytoviricota'' is a phylum of viruses. Members of the phylum are also known as the nucleocytoplasmic large DNA viruses (NCLDV), which serves as the basis of the name of the phylum with the suffix - for virus phylum. These viruses are referred to as nucleocytoplasmic because they are often able to replicate in both the host's cell nucleus and cytoplasm. The phylum is notable for containing the giant viruses. There are nine families of NCLDVs that all share certain genomic and structural characteristics; however, it is uncertain whether the similarities of the different families of this group have a common viral ancestor. One feature of this group is a large genome and the presence of many genes involved in DNA repair, DNA replication, transcription, and translation. Typically, viruses with smaller genomes do not contain genes for these processes. Most of the viruses in this family also replicate in both the host's nucleus and cytoplasm, thus the name nucleocytoplasmic. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nucleocytoplasmic Large DNA Viruses
''Nucleocytoviricota'' is a phylum of viruses. Members of the phylum are also known as the nucleocytoplasmic large DNA viruses (NCLDV), which serves as the basis of the name of the phylum with the suffix - for virus phylum. These viruses are referred to as nucleocytoplasmic because they are often able to replicate in both the host's cell nucleus and cytoplasm. The phylum is notable for containing the giant viruses. There are nine families of NCLDVs that all share certain genomic and structural characteristics; however, it is uncertain whether the similarities of the different families of this group have a common viral ancestor. One feature of this group is a large genome and the presence of many genes involved in DNA repair, DNA replication, transcription, and translation. Typically, viruses with smaller genomes do not contain genes for these processes. Most of the viruses in this family also replicate in both the host's nucleus and cytoplasm, thus the name nucleocytoplasmic. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterocapsa Circularisquama
''Heterocapsa circularisquama'' is a species of dinoflagellates notable for the production of a biotoxin affecting marine fauna. It is known to produce large red tides off western Japan, causing high bivalve mortality, particularly pearl oysters. It is very similar to '' Heterocapsa illdefina'', however ''H. circularisquama'' carries six radiating ridges on its circular basal plate, and its scales have longer spines, among other subtle differences in morphology. Description Its cell is small and consists of a conical epitheca. The chloroplast is single and is connected to the unique pyrenoid Pyrenoids are sub-cellular micro-compartments found in chloroplasts of many algae,Giordano, M., Beardall, J., & Raven, J. A. (2005). CO2 concentrating mechanisms in algae: mechanisms, environmental modulation, and evolution. Annu. Rev. Plant Bio .... Its nucleus is elongated, located in the left side of the cell. References Further reading * * External linksAlgaeBase Species descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phycodnaviridae
''Phycodnaviridae'' is a family of large (100–560 kb) double-stranded DNA viruses that infect marine or freshwater eukaryotic algae. Viruses within this family have a similar morphology, with an icosahedral capsid (polyhedron with 20 faces). As of 2014, there were 33 species in this family, divided among 6 genera. This family belongs to a super-group of large viruses known as nucleocytoplasmic large DNA viruses. Evidence was published in 2014 suggesting that specific strains of ''Phycodnaviridae'' might infect humans rather than just algal species, as was previously believed. Most genera under this family enter the host cell by cell receptor endocytosis and replicate in the nucleus. ''Phycodnaviridae'' play important ecological roles by regulating the growth and productivity of their algal hosts. Algal species such '' Heterosigma akashiwo'' and the genus ''Chrysochromulina'' can form dense blooms which can be damaging to fisheries, resulting in losses in the aquaculture ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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