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Phaeovirus
''Phaeovirus'' is a genus of viruses, in the family ''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 fac ...''. Alga serve as natural hosts. There are nine species in this genus. Taxonomy The genus contains the following species: * '' Ectocarpus fasciculatus virus a'' * '' Ectocarpus siliculosus virus 1'' * '' Ectocarpus siliculosus virus a'' * '' Feldmannia irregularis virus a'' * '' Feldmannia species virus'' * '' Feldmannia species virus a'' * '' Hincksia hinckiae virus a'' * '' Myriotrichia clavaeformis virus a'' * '' Pilayella littoralis virus 1'' Structure Viruses in ''Phaeovirus'' are enveloped, with icosahedral and round geometries, and T=169 symmetry. The diameter is around 120-150 nm. Genomes are linear, around 150-350kb in length. Life cycle Viral ... [...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 ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phycodnaviridae Virion
''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 ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viruses
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898,Dimmock p. 4 more than 9,000 virus species have been described in detail of the millions of types of viruses in the environment. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. The study of viruses is known as virology, a subspeciality of microbiology. When infected, a host cell is often forced to rapidly produce thousands of copies of the original virus. When not inside an infected cell or in the process of infecting a cell, viruses exist in the form of independent particles, or ''virions'', consisting of (i) the genetic material, i.e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectocarpus Fasciculatus Virus A
''Ectocarpus'' is a genus of filamentous brown alga that is a model organism for the genomics of multicellularity. Among possible model organisms in the brown algae, ''Ectocarpus'' was selected for the relatively small size of its mature thallus and the speed with which it completes its life cycle. The type species for the genus is ''Ectocarpus siliculosus'' ( Dillwyn) Lyngbye. The life history is an isomorphic to slightly kiheteromorphic alternation of generations, but asexual strains also exist. Taxonomy and Nomenclature In 1809, Dillwyn described ''Ectocarpus'' as another algae known as ''Conferva siliculosa'' basing from collected specimens by W.J. Hooker from Norfolk and East Sussex. In 1819, Lyngbye subsequently described ''Ectocarpus'' using a specimen from Denmark, citing ''C. siliculosa'' Dilwyn as its basionym. These brown algae are known members of heterokonts, which includes diatoms and oomycetes. Ectocarpales is known to be primitive from a phylogenetic standpoint, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectocarpus Siliculosus Virus 1
''Ectocarpus'' is a genus of filamentous brown alga that is a model organism for the genomics of multicellularity. Among possible model organisms in the brown algae, ''Ectocarpus'' was selected for the relatively small size of its mature thallus and the speed with which it completes its life cycle. The type species for the genus is ''Ectocarpus siliculosus'' ( Dillwyn) Lyngbye. The life history is an isomorphic to slightly kiheteromorphic alternation of generations, but asexual strains also exist. Taxonomy and Nomenclature In 1809, Dillwyn described ''Ectocarpus'' as another algae known as ''Conferva siliculosa'' basing from collected specimens by W.J. Hooker from Norfolk and East Sussex. In 1819, Lyngbye subsequently described ''Ectocarpus'' using a specimen from Denmark, citing ''C. siliculosa'' Dilwyn as its basionym. These brown algae are known members of heterokonts, which includes diatoms and oomycetes. Ectocarpales is known to be primitive from a phylogenetic standpoint, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectocarpus Siliculosus Virus A
''Ectocarpus'' is a genus of filamentous brown alga that is a model organism for the genomics of multicellularity. Among possible model organisms in the brown algae, ''Ectocarpus'' was selected for the relatively small size of its mature thallus and the speed with which it completes its life cycle. The type species for the genus is ''Ectocarpus siliculosus'' ( Dillwyn) Lyngbye. The life history is an isomorphic to slightly kiheteromorphic alternation of generations, but asexual strains also exist. Taxonomy and Nomenclature In 1809, Dillwyn described ''Ectocarpus'' as another algae known as ''Conferva siliculosa'' basing from collected specimens by W.J. Hooker from Norfolk and East Sussex. In 1819, Lyngbye subsequently described ''Ectocarpus'' using a specimen from Denmark, citing ''C. siliculosa'' Dilwyn as its basionym. These brown algae are known members of heterokonts, which includes diatoms and oomycetes. Ectocarpales is known to be primitive from a phylogenetic standpoint, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myriotrichia Clavaeformis Virus A
''Myriotrichia'' is a genus of brown algae. It forms small, soft, olive-brown tufts on the surface of other plants. Filaments rarely exceed centimetres in length. It may grow by intercalary growth. Its sporangia may contain one or many cavities, and emerge directly from the surface cells; they may form a ring around the main nema. Dedicated photosynthetic machinery may be entirely absent. Its life history consists of alternation of phases; it has isogamous gametes, and dioecious gametophytes. At warm temperatures , the alga reproduces sexually, forming single chambered " meiosporangia". At cooler temperatures, asexual reproduction took place in multi-chambered " mitosporangia". The gametophyte phase only produces gametes when day length is long; with shorter days these too reproduce asexually. This is probably because the plants upon which they are epiphytic only grow in the spring. The gametophyte is filamentous – while the sporophyte bears parenchyma, even though it o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
