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Amalgaviridae
''Amalgaviridae'' is a family of double-stranded RNA viruses. Member viruses infect plants and are transmitted vertically via seeds. The name derives from ''amalgam'' (blend, mix) which refers to amalgaviruses possessing characteristics of both partitiviruses and totiviruses. There are ten species in the family. Genome Amalgavirus genomes are monopartite and about 3.5 kilobases in length. They have two partially overlapping open reading frames which encode the RNA-dependent RNA polymerase (RdRp) and a putative capsid protein. Evolution It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes. Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (''Partitiviridae'') which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists. By contrast, the putative capsid protein of amalgaviruses is homo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amalgavirus (genus)
''Amalgaviridae'' is a family of double-stranded RNA viruses. Member viruses infect plants and are transmitted vertically via seeds. The name derives from ''amalgam'' (blend, mix) which refers to amalgaviruses possessing characteristics of both partitiviruses and totiviruses. There are ten species in the family. Genome Amalgavirus genomes are monopartite and about 3.5 kilobases in length. They have two partially overlapping open reading frames which encode the RNA-dependent RNA polymerase (RdRp) and a putative capsid protein. Evolution It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes. Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (''Partitiviridae'') which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists. By contrast, the putative capsid protein of amalgaviruses is homo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vicia Cryptic Virus M
''Amalgaviridae'' is a family of double-stranded RNA viruses. Member viruses infect plants and are transmitted vertically via seeds. The name derives from ''amalgam'' (blend, mix) which refers to amalgaviruses possessing characteristics of both partitiviruses and totiviruses. There are ten species in the family. Genome Amalgavirus genomes are monopartite and about 3.5 kilobases in length. They have two partially overlapping open reading frames which encode the RNA-dependent RNA polymerase (RdRp) and a putative capsid protein. Evolution It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes. Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (''Partitiviridae'') which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists. By contrast, the putative capsid protein of amalgaviruses is homo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Tomato Virus
''Amalgaviridae'' is a family of double-stranded RNA viruses. Member viruses infect plants and are transmitted vertically via seeds. The name derives from ''amalgam'' (blend, mix) which refers to amalgaviruses possessing characteristics of both partitiviruses and totiviruses. There are ten species in the family. Genome Amalgavirus genomes are monopartite and about 3.5 kilobases in length. They have two partially overlapping open reading frames which encode the RNA-dependent RNA polymerase (RdRp) and a putative capsid protein. Evolution It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes. Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (''Partitiviridae'') which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists. By contrast, the putative capsid protein of amalgaviruses is homo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhododendron Virus A
''Amalgaviridae'' is a family of double-stranded RNA viruses. Member viruses infect plants and are transmitted vertically via seeds. The name derives from ''amalgam'' (blend, mix) which refers to amalgaviruses possessing characteristics of both partitiviruses and totiviruses. There are ten species in the family. Genome Amalgavirus genomes are monopartite and about 3.5 kilobases in length. They have two partially overlapping open reading frames which encode the RNA-dependent RNA polymerase (RdRp) and a putative capsid protein. Evolution It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes. Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (''Partitiviridae'') which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists. By contrast, the putative capsid protein of amalgaviruses is homo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blueberry Latent Virus
''Amalgaviridae'' is a family of double-stranded RNA viruses. Member viruses infect plants and are transmitted vertically via seeds. The name derives from ''amalgam'' (blend, mix) which refers to amalgaviruses possessing characteristics of both partitiviruses and totiviruses. There are ten species in the family. Genome Amalgavirus genomes are monopartite and about 3.5 kilobases in length. They have two partially overlapping open reading frames which encode the RNA-dependent RNA polymerase (RdRp) and a putative capsid protein. Evolution It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes. Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (''Partitiviridae'') which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists. By contrast, the putative capsid protein of amalgaviruses is homo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amalgavirus
''Amalgaviridae'' is a family of double-stranded RNA viruses. Member viruses infect plants and are transmitted vertically via seeds. The name derives from ''amalgam'' (blend, mix) which refers to amalgaviruses possessing characteristics of both partitiviruses and totiviruses. There are ten species in the family. Genome Amalgavirus genomes are monopartite and about 3.5 kilobases in length. They have two partially overlapping open reading frames which encode the RNA-dependent RNA polymerase (RdRp) and a putative capsid protein. Evolution It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes. Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (''Partitiviridae'') which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists. By contrast, the putative capsid protein of amalgaviruses is homo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-stranded RNA Viruses
Double-stranded RNA viruses (dsRNA viruses) are a polyphyletic group of viruses that have double-stranded genomes made of ribonucleic acid. The double-stranded genome is used to transcribe a positive-strand RNA by the viral RNA-dependent RNA polymerase (RdRp). The positive-strand RNA may be used as messenger RNA (mRNA) which can be translated into viral proteins by the host cell's ribosomes. The positive-strand RNA can also be replicated by the RdRp to create a new double-stranded viral genome. Double-stranded RNA viruses are classified in two separate phyla ''Duplornaviricota'' and ''Pisuviricota'' (specifically class ''Duplopiviricetes''), which are in the kingdom ''Orthornavirae'' and realm ''Riboviria''. The two groups do not share a common dsRNA virus ancestor. Double-stranded RNA viruses evolved two separate times from positive-strand RNA viruses. In the Baltimore classification system, dsRNA viruses belong to Group III. Virus group members vary widely in host range (anim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RNA Virus
An RNA virus is a virusother than a retrovirusthat has ribonucleic acid (RNA) as its genetic material. The nucleic acid is usually single-stranded RNA ( ssRNA) but it may be double-stranded (dsRNA). Notable human diseases caused by RNA viruses include the common cold, influenza, SARS, MERS, Covid-19, Dengue Virus, hepatitis C, hepatitis E, West Nile fever, Ebola virus disease, rabies, polio, mumps, and measles. The International Committee on Taxonomy of Viruses (ICTV) classifies RNA viruses as those that belong to ''Group III'', ''Group IV'' or ''Group V'' of the Baltimore classification system. This category excludes ''Group VI'', viruses with RNA genetic material but which use DNA intermediates in their life cycle: these are called retroviruses, including HIV-1 and HIV-2 which cause AIDS. As of May 2020, all known RNA viruses encoding an RNA-directed RNA polymerase are believed to form a monophyletic group, known as the realm '' Riboviria''. The majority of such RNA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bunyaviridae
''Bunyavirales'' is an order of segmented negative-strand RNA viruses with mainly tripartite genomes. Member viruses infect arthropods, plants, protozoans, and vertebrates. It is the only order in the class ''Ellioviricetes''. The name ''Bunyavirales'' derives from Bunyamwera, where the original type species ''Bunyamwera orthobunyavirus'' was first discovered. ''Ellioviricetes'' is named in honor of late virologist Richard M. Elliott (virologist), Richard M. Elliott for his early work on bunyaviruses. Bunyaviruses belong to the fifth group of the Baltimore classification, Baltimore classification system, which includes viruses with a Sense (molecular biology), negative-sense, single-stranded RNA genome. They have an Viral envelope, enveloped, spherical virion. Though generally found in arthropods or rodents, certain viruses in this order occasionally infect humans. Some of them also infect plants. In addition, there is a group of bunyaviruses whose replication is restricted to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
