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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 all life forms, from animals and plants to microorganisms, including bacteria and archaea. Viruses are found in almo .... 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'' 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 in ... [...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'' * '' 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 all ...'' 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'' * ''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 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 and contact. References External li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 all life forms, from animals and plants to microorganisms, including bacteria and archaea. Viruses are found in almo .... 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'' 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 in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anulavirus
''Anulavirus'' is a genus of viruses, in the family ''Bromoviridae''. Pelargonium ''Pelargonium'' () is a genus of flowering plants that includes about 280 species of perennial plant, perennials, succulent plant, succulents, and shrubs, common name, commonly called geraniums, pelargoniums, or storksbills. ''Geranium'' is also ... serve as natural hosts. There are three species in this genus. Taxonomy The following species are assigned to the genus, with their scientific name and common name: * ''Anulavirus ALMMV'', Amazon lily mild mottle virus * ''Anulavirus GLPV'', Grapevine line pattern virus * ''Anulavirus PZSV'', 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bromovirus
''Bromovirus'' is a genus of virus A virus is a submicroscopic infectious agent that replicates only inside the living Cell (biology), cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Viruses are ...es, in the family ''Bromoviridae''. Plants serve as natural hosts. There are seven species in this genus. Taxonomy The following species are assigned to the genus, listed by scientific name and followed by their common names: * ''Bromovirus BBMV'', Broad bean mottle virus * ''Bromovirus BMV'', Brome mosaic virus * ''Bromovirus CCMV'', Cowpea chlorotic mottle virus * ''Bromovirus CYBV'', Cassia yellow blotch virus * ''Bromovirus MYFV'', Melandrium yellow fleck virus * ''Bromovirus SBLV'', Spring beauty latent virus * ''Bromovirus SVS'', Sambucus virus S Structure Viruses in the genus ''Bromovirus'' are non-enveloped, with icosahedral geometries, and T=3 symmetry. The diameter is around 26 nm ... [...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, listed by scientific name and followed by their common names: * ''Cucumovirus CMV'', Cucumber mosaic virus * ''Cucumovirus GMMV'', Gayfeather mild mottle virus * ''Cucumovirus PSV'', Peanut stunt virus * ''Cucumovirus TAV'', 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 virus transcription, using the internal initiation model of subgenomic rna transcription is the method of transcription. The ... [...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 36 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, listed by scientific name an ... [...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 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 bac ...''. Olive trees serve as natural hosts. There is only one species in this genus: Olive latent virus 2 (''Oleavirus OLV2''). 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 transcrip ... [...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 species in the ''Alfamovirus'' genus 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) an ... [...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 Focus (optics), focused onto an imaging device, such as a fluorescent screen, a layer of photographic film, or a Detectors for transmission electron microscopy, detector such as a scintillator attached to a charge-coupled device or a direct electron detector. Transmission electron microscopes are capable of imaging at a significantly higher Optical resolution, resolution than Optical microscope, 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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virions
A virion (plural, ''viria'' or ''virions'') is an inert virus particle capable of invading a cell. Upon entering the cell, the virion disassembles and the genetic material from the virus takes control of the cell infrastructure, thus enabling the virus to replicate. The genetic material ('' core'', either DNA or RNA, along with occasionally present virus core protein) inside the virion is usually enclosed in a protection shell, known as the capsid. While the terms "virus" and "virion" are occasionally confused, recently "virion" is used solely to describe the virus structure outside of cells, while the terms "virus/viral" are broader and also include biological properties such as the infectivity of a virion. Components A virion consists of one or more nucleic acid genome molecules (single-stranded or double-stranded RNA or DNA) and coatings (a capsid and possibly a viral envelope). The virion may contain other proteins (for example with enzymatic activities) and/or nucleo ... [...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. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. 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, more than 16,000 of the millions of virus species have been described in detail. 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 viral particles, or ''virions'', consisting of (i) genetic material, i.e., long molecules of DNA or RNA that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
