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Bromoviridae
''Bromoviridae'' is a family of viruses. Plants serve as natural hosts. There are six genera in the family. Taxonomy The following genera are assigned to the family: * ''Alfamovirus'' * ''Anulavirus'' * ''Bromovirus'' * ''Cucumovirus'' * ''Ilarvirus'' * ''Oleavirus ''Oleavirus'' is a genus of viruses, in the family ''Bromoviridae ''Bromoviridae'' is a family of viruses A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect a ...'' Structure Viruses in the family ''Bromoviridae'' are non-enveloped, with icosahedral and bacilliform geometries. The diameter is around 26-35 nm. Genomes are linear and segmented, tripartite. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using the internal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bromoviridae Genome
''Bromoviridae'' is a family of viruses. Plants serve as natural hosts. There are six genera in the family. Taxonomy The following genera are assigned to the family: * '' Alfamovirus'' * '' Anulavirus'' * '' Bromovirus'' * ''Cucumovirus ''Cucumovirus'' is a genus of viruses, in the family ''Bromoviridae''. Plants serve as natural hosts. There are four species in this genus. Taxonomy The following species are assigned to the genus: * ''Cucumber mosaic virus ''Cucumber mosaic ...'' * '' Ilarvirus'' * '' Oleavirus'' Structure Viruses in the family ''Bromoviridae'' are non-enveloped, with icosahedral and bacilliform geometries. The diameter is around 26-35 nm. Genomes are linear and segmented, tripartite. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using the int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bromoviridae Virion
''Bromoviridae'' is a family of viruses. Plants serve as natural hosts. There are six genera in the family. Taxonomy The following genera are assigned to the family: * '' Alfamovirus'' * '' Anulavirus'' * '' Bromovirus'' * ''Cucumovirus ''Cucumovirus'' is a genus of viruses, in the family ''Bromoviridae''. Plants serve as natural hosts. There are four species in this genus. Taxonomy The following species are assigned to the genus: * ''Cucumber mosaic virus ''Cucumber mosaic ...'' * '' Ilarvirus'' * '' Oleavirus'' Structure Viruses in the family ''Bromoviridae'' are non-enveloped, with icosahedral and bacilliform geometries. The diameter is around 26-35 nm. Genomes are linear and segmented, tripartite. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using the int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bromoviridae
''Bromoviridae'' is a family of viruses. Plants serve as natural hosts. There are six genera in the family. Taxonomy The following genera are assigned to the family: * ''Alfamovirus'' * ''Anulavirus'' * ''Bromovirus'' * ''Cucumovirus'' * ''Ilarvirus'' * ''Oleavirus ''Oleavirus'' is a genus of viruses, in the family ''Bromoviridae ''Bromoviridae'' is a family of viruses A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect a ...'' Structure Viruses in the family ''Bromoviridae'' are non-enveloped, with icosahedral and bacilliform geometries. The diameter is around 26-35 nm. Genomes are linear and segmented, tripartite. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using the internal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anulavirus
''Anulavirus'' is a genus of viruses, in the family ''Bromoviridae ''Bromoviridae'' is a family of viruses. Plants serve as natural hosts. There are six genera in the family. Taxonomy The following genera are assigned to the family: * ''Alfamovirus'' * ''Anulavirus'' * ''Bromovirus'' * ''Cucumovirus'' * ''Ilar ...''. Pelargonium serve as natural hosts. There are two species in this genus. Taxonomy The following species are assigned to the genus: * '' Amazon lily mild mottle virus'' * '' Pelargonium zonate spot virus'' Structure Viruses in the genus ''Anulavirus'' have icosahedral and Quasi-spherical geometries, and T=3 symmetry. The diameter is around 25-35 nm. Genomes are linear and segmented, tripartite. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using the internal initiation m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bromovirus
''Bromovirus'' is a genus of viruses, in the family ''Bromoviridae''. Plants serve as natural hosts. There are six species in this genus. Taxonomy The following species are assigned to the genus: * '' Broad bean mottle virus'' * '' Brome mosaic virus'' * '' Cassia yellow blotch virus'' * '' Cowpea chlorotic mottle virus'' * '' Melandrium yellow fleck virus'' * '' Spring beauty latent virus'' Structure Viruses in the genus ''Bromovirus'' are non-enveloped, with icosahedral geometries, and T=3 symmetry. The diameter is around 26 nm. Genomes are linear and segmented, tripartite. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using the internal initiation model of subgenomic RNA transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Plants s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cucumovirus
''Cucumovirus'' is a genus of viruses, in the family ''Bromoviridae''. Plants serve as natural hosts. There are four species in this genus. Taxonomy The following species are assigned to the genus: * ''Cucumber mosaic virus ''Cucumber mosaic virus'' (CMV) is a plant pathogenic virus in the family ''Bromoviridae''. This virus has a worldwide distribution and a very wide host range, having the reputation of the widest host range of any known plant virus. It can be tra ...'' * '' Gayfeather mild mottle virus'' * '' Peanut stunt virus'' * '' Tomato aspermy virus'' Structure Viruses in the genus ''Cucumovirus'' are non-enveloped, with icosahedral and Spherical geometries, and T=3 symmetry. The diameter is around 29 nm. Genomes are linear and segmented, tripartite. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ilarvirus
''Ilarvirus'' is a genus of positive-strand RNA viruses in the family ''Bromoviridae''. Plants serve as natural hosts. There are 22 species in this genus. Structure Viruses in the genus ''Ilarvirus'' are non-enveloped, with icosahedral and quasi-spherical geometries, and T=3 symmetry. The diameter is around 29 nm. Genomes are linear and have three segments. Life cycle Viral replication is cytoplasmic and lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive-strand RNA virus replication model in the cytoplasm. Positive strand RNA virus transcription, using the internal initiation model of subgenomic RNA transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. Transmission routes are mechanical inoculation by insects and plant to plant contact. Taxonomy The following species are assigned to the genus: * '' Ageratum latent virus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oleavirus
''Oleavirus'' is a genus of viruses, in the family ''Bromoviridae ''Bromoviridae'' is a family of viruses. Plants serve as natural hosts. There are six genera in the family. Taxonomy The following genera are assigned to the family: * ''Alfamovirus'' * ''Anulavirus'' * ''Bromovirus'' * ''Cucumovirus'' * ''Ilar ...''. Olive trees serve as natural hosts. There is only one species in this genus: ''Olive latent virus 2''. Structure Viruses in the genus ''Oleavirus'' are non-enveloped, with icosahedral, Quasi-spherical, and Bacilliform geometries, and T=1 symmetry. The diameter is around 26 nm, with a length of 55 nm and a width of 18 nm. Genomes are linear and segmented, tripartite, around 123kb in length. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfamovirus
Alfalfa mosaic virus (AMV), also known as ''Lucerne mosaic virus'' or ''Potato calico virus'', is a worldwide distributed phytopathogen that can lead to necrosis and yellow mosaics on a large variety of plant species, including commercially important crops. It is the only ''Alfamovirus'' of the family ''Bromoviridae''. In 1931 Weimer J.L. was the first to report AMV in alfalfa (''Medicago sativa''). Transmission of the virus occurs mainly by some aphids (plant lice), by seeds or by pollen to the seed. Virology Structure The virion has a capsid (coat protein) but no envelope. The icosahedral symmetry of the capsid is round to elongated. The range for the length of the virion particle is about 30–57 nm. AMV is a multipartite virus and is composed of four particles (three bacilliform and one spheroidal) with a diameter of 18 nm. Genome The genetic material of AMV consists of three linear positive-sense strand RNAs (RNA 1, RNA 2 and RNA 3) and a subgenomic RNA (R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission Electron Micrograph
Transmission electron microscopy (TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen is most often an ultrathin section less than 100 nm thick or a suspension on a grid. An image is formed from the interaction of the electrons with the sample as the beam is transmitted through the specimen. The image is then magnified and focused onto an imaging device, such as a fluorescent screen, a layer of photographic film, or a sensor such as a scintillator attached to a charge-coupled device. Transmission electron microscopes are capable of imaging at a significantly higher resolution than light microscopes, owing to the smaller de Broglie wavelength of electrons. This enables the instrument to capture fine detail—even as small as a single column of atoms, which is thousands of times smaller than a resolvable object seen in a light microscope. Transmission electron microscopy is a major analytical method i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virions
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, ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
