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Sedoreovirinae
''Sedoreovirinae'' (''sedo'' = smooth) is a subfamily of the ''Reoviridae'' family of viruses. Viruses in this subfamily are distinguished by the absence of a turreted protein on the inner capsid to produce a smooth surface. Characteristics Like other members of the ''Reoviridae'' family, viruses of the ''Sedoreovirinae'' subfamily are made of naked, icosahedral capsids containing 10-12 segments of linear double-stranded RNA (dsRNA). The Baltimore System of viral classification categorizes ''Reoviridae'' in Group III. Importance Viruses classified in the ''Sedoreovirinae'' subfamily infect a wide range of plants and animals, including some that can infect humans. There is not only the potential of a few of these viruses to cause human disease, but also to reduce the supply of crops and livestock. Viruses Genus ''Cardoreovirus'' '' Eriocheir sinensis reovirus'' was isolated out of a Chinese mitten crab ('' Eriocheir sinensis''). No currently known associated disease. Genus ''Mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedoreovirinae
''Sedoreovirinae'' (''sedo'' = smooth) is a subfamily of the ''Reoviridae'' family of viruses. Viruses in this subfamily are distinguished by the absence of a turreted protein on the inner capsid to produce a smooth surface. Characteristics Like other members of the ''Reoviridae'' family, viruses of the ''Sedoreovirinae'' subfamily are made of naked, icosahedral capsids containing 10-12 segments of linear double-stranded RNA (dsRNA). The Baltimore System of viral classification categorizes ''Reoviridae'' in Group III. Importance Viruses classified in the ''Sedoreovirinae'' subfamily infect a wide range of plants and animals, including some that can infect humans. There is not only the potential of a few of these viruses to cause human disease, but also to reduce the supply of crops and livestock. Viruses Genus ''Cardoreovirus'' '' Eriocheir sinensis reovirus'' was isolated out of a Chinese mitten crab ('' Eriocheir sinensis''). No currently known associated disease. Genus ''Mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reoviruses
''Reoviridae'' is a family of double-stranded RNA viruses. Member viruses have a wide host range, including vertebrates, invertebrates, plants, protists and fungi. They lack lipid envelopes and package their segmented genome within multi-layered capsids. Lack of a lipid envelope has allowed three-dimensional structures of these large complex viruses (diameter ∼60–100 nm) to be obtained, revealing a structural and likely evolutionary relationship to the cystovirus family of bacteriophage. There are currently 97 species in this family, divided among 15 genera in two subfamilies. Reoviruses can affect the gastrointestinal system (such as rotaviruses) and respiratory tract. The name "reo-" is an acronym for "''r''espiratory ''e''nteric ''o''rphan" viruses''.'' The term "orphan virus" refers to the fact that some of these viruses have been observed not associated with any known disease. Even though viruses in the family ''Reoviridae'' have more recently been identified with v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reoviridae
''Reoviridae'' is a family of double-stranded RNA viruses. Member viruses have a wide host range, including vertebrates, invertebrates, plants, protists and fungi. They lack lipid envelopes and package their segmented genome within multi-layered capsids. Lack of a lipid envelope has allowed three-dimensional structures of these large complex viruses (diameter ∼60–100 nm) to be obtained, revealing a structural and likely evolutionary relationship to the cystovirus family of bacteriophage. There are currently 97 species in this family, divided among 15 genera in two subfamilies. Reoviruses can affect the gastrointestinal system (such as rotaviruses) and respiratory tract. The name "reo-" is an acronym for "''r''espiratory ''e''nteric ''o''rphan" viruses''.'' The term "orphan virus" refers to the fact that some of these viruses have been observed not associated with any known disease. Even though viruses in the family ''Reoviridae'' have more recently been identified with vario ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mimoreovirus
''Mimoreovirus'' is a genus of viruses, in the family ''Reoviridae'', in the subfamily ''Sedoreovirinae''. The only isolate infects the marine photosynthetic protist ''Micromonas pusilla'', a prasinophyte. There is only one species in this genus: ''Micromonas pusilla reovirus''. Structure Viruses in Mimoreovirus are non-enveloped, with icosahedral geometries, and T=13, T=2 symmetry. The diameter is around 90-95 nm. Genomes are linear and segmented, around 15.8kb in length. The genome codes for 11 proteins. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. The virus exits the host cell by monopartite non-tubule guided viral movement. Marine photosynthetic protists serve as the natural host. Transmission routes are passive diffusion. Referen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kadipiro Virus
''Kadipiro virus'' (KDV) is a member of the virus family ''Reoviridae''. It is an arbovirus and has been isolated from ''Culex'', ''Anopheles'', ''Armigeres'', and ''Aedes'' mosquitoes in Indonesia and China. Other members of the genus ''Seadornavirus'' have been linked to viral encephalitis. Characteristics The ''Kadipiro virus'' contains 12 segments of double-stranded RNA (dsRNA) with a 21,000 base-pair genome. The capsid is icosahedral and naked, though it does temporarily acquire a viral envelope as it buds from a host cell. ''Sedoreovirinae'' viruses contain and inner, intermediate and outer capsid. The capsid is 70 nanometers in diameter with capsid spikes and 7 structural proteins. Taxonomy The ''Kadipiro virus'' was once classified as ''Coltivirus JKT-7075''. It has been reclassified to the genus ''Seadornavirus'' of the subfamily ''Sedoreovirinae'' within the family ''Reoviridae''. The ''Reoviridae'' have not been assigned to an order. Due to the dsRNA nature of the vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arbovirus
Arbovirus is an informal name for any virus that is transmitted by arthropod vectors. The term ''arbovirus'' is a portmanteau word (''ar''thropod-''bo''rne ''virus''). ''Tibovirus'' (''ti''ck-''bo''rne ''virus'') is sometimes used to more specifically describe viruses transmitted by ticks, a superorder within the arthropods. Arboviruses can affect both animals (including humans) and plants. In humans, symptoms of arbovirus infection generally occur 3–15 days after exposure to the virus and last three or four days. The most common clinical features of infection are fever, headache, and malaise, but encephalitis and viral hemorrhagic fever may also occur. Signs and symptoms The incubation period – the time between when infection occurs and when symptoms appear – varies from virus to virus, but is usually limited between 2 and 15 days for arboviruses. The majority of infections, however, are asymptomatic. Among cases in which symptoms do appear, symptoms tend to be non-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eriocheir Sinensis Reovirus
''Cardoreovirus'' is a genus of double-stranded RNA viruses in the family ''Reoviridae'' and subfamily ''Sedoreovirinae''. Crabs serve as natural hosts. There is only one species in this genus: ''Eriocheir sinensis reovirus''. Diseases associated with this genus include: trembling disease. The name derives from Latin words "''car''cinus" which means crab and "''do''eca" which means twelve in reference to the number genome segments. Structure Viruses in the genus ''Cardoreovirus'' are non-enveloped. They have an Icosahedral symmetry, icosahedral capsid that is three-layered. The inner shell has T=2 symmetry and the middle shell has T=13 symmetry. The diameter is around 55 nm. Genome The genome is made of double-stranded RNA. It is linear and has twelve segments. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seadornavirus
''Seadornavirus'' is a genus of viruses, in the family ''Reoviridae'', in the subfamily '' Sedoreovirinae''. Human, cattle, pig, and mosquitoes serve as natural hosts. There are three species in this genus: ''Banna virus'' (BAV), '' Kadipiro virus'' and '' Liao ning virus''. Each of these viruses has been isolated from ''Aedes'', ''Anopheles'' and ''Culex'' mosquito populations, but only BAV has been shown to cause infection in humans, in which the symptoms are similar to Japanese encephalitis—fever, malaise and encephalitis.Attoui H, Mohd Jaafar F, de Lamballerie X, Mertens PPC Seadornavirus, Reoviridae In: Fauquet CM, Mayo MA, Maniloff J, Desselberger U, Ball LA, editors. Virus taxonomy: eighth report of the international committee on taxonomy of viruses. London: Elsevier/Academic Press; 2005. p. 504–10 The word ''seadornavirus'' is an portmanteau, meaning Southeast Asian dodeca RNA virus. Taxonomy The following three species are assigned to the genus: *''Banna virus Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytoreovirus
''Phytoreovirus'' is a genus of viruses, in the family ''Reoviridae'', in the subfamily ''Sedoreovirinae''. They are non-turreted reoviruses that are major agricultural pathogens, particularly in Asia. Oryza sativa for RDV and RGDV, dicotyledonous for WTV, and leafhoppers serve as natural hosts. There are three species in this genus. Diseases associated with this genus include: WTV: galls (tumor). RDV: dwarf (or stunt) disease of rice. RGDV: dwarfing, stunting, and galls. Classification One member of this family, Rice Dwarf Virus (RDV), has been extensively studied by electron cryomicroscopy and x-ray crystallography. From these analyses, atomic models of the capsid proteins and a plausible model for capsid assembly have been derived. While the structural proteins of RDV share no sequence similarity to other proteins, their folds and the overall capsid structure are similar to those of other reoviruses. Phytoreoviruses are unique among reoviruses in that there are 12 dsRNA seg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytoreovirus
''Phytoreovirus'' is a genus of viruses, in the family ''Reoviridae'', in the subfamily ''Sedoreovirinae''. They are non-turreted reoviruses that are major agricultural pathogens, particularly in Asia. Oryza sativa for RDV and RGDV, dicotyledonous for WTV, and leafhoppers serve as natural hosts. There are three species in this genus. Diseases associated with this genus include: WTV: galls (tumor). RDV: dwarf (or stunt) disease of rice. RGDV: dwarfing, stunting, and galls. Classification One member of this family, Rice Dwarf Virus (RDV), has been extensively studied by electron cryomicroscopy and x-ray crystallography. From these analyses, atomic models of the capsid proteins and a plausible model for capsid assembly have been derived. While the structural proteins of RDV share no sequence similarity to other proteins, their folds and the overall capsid structure are similar to those of other reoviruses. Phytoreoviruses are unique among reoviruses in that there are 12 dsRNA seg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbivirus
''Orbivirus'' is a genus of double-stranded RNA viruses in the family ''Reoviridae'' and subfamily ''Sedoreovirinae''. Unlike other reoviruses, orbiviruses are arboviruses. They can infect and replicate within a wide range of arthropod and vertebrate hosts. Orbiviruses are named after their characteristic doughnut-shaped capsomers (''orbis'' in Latin means ring). Many orbiviruses are transmitted by ticks or haematophagus insect vectors (''Culicoides'', mosquitoes and sand flies) and have a wide host range that includes cattle, goats and sheep, wild ruminants, equids, camelids, marsupials, sloths, bats, birds, large canine and feline carnivores, and humans. The three economically most important orbiviruses are ''Bluetongue virus'', ''African horse sickness virus'', and ''Epizootic hemorrhagic disease virus'', all of which are transmitted by ''Culicoides'' species. The genus contains 22 species and at least 130 different serotypes. History In 1719, African horse sickness viru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardoreovirus
''Cardoreovirus'' is a genus of double-stranded RNA viruses in the family ''Reoviridae'' and subfamily ''Sedoreovirinae''. Crabs serve as natural hosts. There is only one species in this genus: ''Eriocheir sinensis reovirus''. Diseases associated with this genus include: trembling disease. The name derives from Latin words "''car''cinus" which means crab and "''do''eca" which means twelve in reference to the number genome segments. Structure Viruses in the genus ''Cardoreovirus'' are non-enveloped. They have an Icosahedral symmetry, icosahedral capsid that is three-layered. The inner shell has T=2 symmetry and the middle shell has T=13 symmetry. The diameter is around 55 nm. Genome The genome is made of double-stranded RNA. It is linear and has twelve segments. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
