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Alphaflexiviridae
''Alphaflexiviridae'' is a family of viruses in the order ''Tymovirales''. Plants and fungi serve as natural hosts. There are 65 species in this family, assigned to six genera. Diseases associated with this family include: mosaic and ringspot symptoms. Taxonomy The following genera are recognized: *'' Allexivirus'' *''Botrexvirus'' *'' Lolavirus'' *'' Platypuvirus'' *''Potexvirus ''Potexvirus'' is a genus of pathogenic viruses in the order '' Tymovirales'', in the family ''Alphaflexiviridae''. Plants serve as natural hosts. There are 48 species in this genus, three of which are assigned to a subgenus. Diseases associated ...'' *'' Sclerodarnavirus'' Structure Viruses in the genus ''Alphaflexiviridae'' are non-enveloped, with flexuous and filamentous geometries. The diameter is around 12-13 nm. Genomes are linear, around 5.4-9kb in length. The genome codes for 1 to 6 proteins. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is ach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alphaflexiviridae
''Alphaflexiviridae'' is a family of viruses in the order ''Tymovirales''. Plants and fungi serve as natural hosts. There are 65 species in this family, assigned to six genera. Diseases associated with this family include: mosaic and ringspot symptoms. Taxonomy The following genera are recognized: *'' Allexivirus'' *''Botrexvirus'' *'' Lolavirus'' *'' Platypuvirus'' *''Potexvirus ''Potexvirus'' is a genus of pathogenic viruses in the order '' Tymovirales'', in the family ''Alphaflexiviridae''. Plants serve as natural hosts. There are 48 species in this genus, three of which are assigned to a subgenus. Diseases associated ...'' *'' Sclerodarnavirus'' Structure Viruses in the genus ''Alphaflexiviridae'' are non-enveloped, with flexuous and filamentous geometries. The diameter is around 12-13 nm. Genomes are linear, around 5.4-9kb in length. The genome codes for 1 to 6 proteins. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is ach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platypuvirus
''Donkey orchid symptomless virus'' (DOSV) was first discovered in Perth, Australia which is located on the Western side of Australia. The Southwest Australian Floristic Region is very biodiverse and secluded with deserts on the east and northeast side along with the ocean on the south side. It is home to approximately 8,000 indigenous plant species that are accustomed to living in a Mediterranean climate. This type of climate means that the plants have adapted to living in unfertile soil, dryness, and can withstand frequent fires in the area. Out of 394 terrestrial orchid species, 76 of these species are threatened. Reasons contributing to plants being threatened in this area could be due to the rate at which they reproduce fruit, pollinate, or human contact. Experimental data Throughout the years 2011-2013, three researchers conducted a study on common donkey orchids. The article that was published in 2013 is titled, ''Donkey Orchid Symptomless Virus: A Viral ‘Platypus†... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lolavirus
''Lolavirus'' is a genus of viruses in the order ''Tymovirales'', in the family ''Alphaflexiviridae''. Plants, specifically ryegrass, serve as natural hosts. There is only one species in this genus: '' Lolium latent virus''. Structure Viruses in ''Lolavirus'' are non-enveloped, with flexuous and filamentous geometries. The diameter is around 13 nm, with a length of 640 nm. Genomes are linear, around 7.6kb in length, with five open reading frame In molecular biology, open reading frames (ORFs) are defined as spans of DNA sequence between the start and stop codons. Usually, this is considered within a studied region of a prokaryotic DNA sequence, where only one of the six possible readin ...s that encode the replication-associated protein, the movement-associated triple gene block proteins, and the coat protein (which is cleaved into two parts weighing about 28 and 33 kDa). The genome codes for 6 proteins. Life cycle Viral replication is cytoplasmic, and is lysogeni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botrexvirus
''Botrexvirus'' is a genus of viruses in the order ''Tymovirales'', in the family ''Alphaflexiviridae ''Alphaflexiviridae'' is a family of viruses in the order ''Tymovirales''. Plants and fungi serve as natural hosts. There are 65 species in this family, assigned to six genera. Diseases associated with this family include: mosaic and ringspot sy ...''. Fungi serve as natural hosts. There is only one species in this genus: ''Botrytis virus X''. Structure Viruses in ''Botrexvirus'' are non-enveloped, with flexuous and filamentous geometries. The diameter is around 12-13 nm, with a length of 720 nm. Genomes are linear, around 7kb in length. The genome codes for 5 proteins. 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 is the method of transcription. The virus exits the host cell by trip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allexivirus
''Allexivirus'' is a genus of viruses in the order ''Tymovirales'', in the family ''Alphaflexiviridae''. Shallot, onion, and garlic serve as natural hosts. There are 13 species in this genus, seven of which are assigned to a subgenus. Diseases associated with this genus include: mosaic and ringspot symptoms. Taxonomy The following species are assigned to the genus: * Subgenus: '' Acarallexivirus'' ** '' Garlic virus A'' ** '' Garlic virus B'' ** '' Garlic virus C'' ** '' Garlic virus D'' ** '' Garlic virus E'' ** '' Garlic virus X'' ** '' Shallot virus X'' * Species not assigned to a subgenus: ** ''Alfalfa virus S'' ** ''Arachis pintoi virus ''Arachis'' is a genus of about 70 species of annual and perennial flowering plants in the family (Fabaceae), native to South America, and was recently assigned to the informal monophyletic ''Pterocarpus'' clade of the Dalbergieae. At least one ...'' ** '' Blackberry virus E'' ** '' Garlic mite-borne filamentous virus'' ** '' Senna yello ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potexvirus
''Potexvirus'' is a genus of pathogenic viruses in the order ''Tymovirales'', in the family ''Alphaflexiviridae''. Plants serve as natural hosts. There are 48 species in this genus, three of which are assigned to a subgenus. Diseases associated with this genus include: mosaic and ringspot symptoms. The genus name comes from ''POTato virus X''). Taxonomy ''Potexvirus'' contains one subgenus that has three species and 45 additional species unassigned to a subgenus. The following 48 species are assigned to the genus: * Subgenus: '' Mandarivirus'' ** ''Citrus yellow mottle-associated virus'' ** ''Citrus yellow vein clearing virus'' ** '' Indian citrus ringspot virus'' The following species are unassigned to a subgenus: *'' Allium virus X'' *'' Alstroemeria virus X'' *'' Alternanthera mosaic virus'' *'' Ambrosia asymptomatic virus 1'' *'' Asparagus virus 3'' *''Babaco mosaic virus'' *'' Bamboo mosaic virus'' *''Cactus virus X'' *''Cassava Colombian symptomless virus'' *''Cassava c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sclerodarnavirus
''Sclerodarnavirus'' is a genus of viruses in the order ''Tymovirales'', in the family ''Alphaflexiviridae ''Alphaflexiviridae'' is a family of viruses in the order ''Tymovirales''. Plants and fungi serve as natural hosts. There are 65 species in this family, assigned to six genera. Diseases associated with this family include: mosaic and ringspot sy ...''. Fungi serve as natural hosts. There is only one species in this genus: ''Sclerotinia sclerotiorum debilitation-associated RNA virus''. Diseases associated with this genus include: hypovirulence or debilitation. Structure Genomes are linear, around 5.5kb in length. 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 is the method of transcription. The virus exits the host cell by tripartite non-tubule guided viral movement. Fungi serve as the natu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Narcissus Mosaic Virus
''Narcissus mosaic virus'' (NMV) is a plant pathogenic virus in the genus ''Potexvirus'' and family ''Alphaflexiviridae'', which infects '' Narcissus''. Description Isolated in the Netherlands and the UK from ''Narcissus pseudonarcissus'' in 1946,van Slogteren & de Bruyn Ouboter, Daffodil Tulip Yb. 12: 3, 1946. it is generally symptomless. Gallery 12985 2011 1518 MOESM3 ESM.jpg, Electron micrograph of NMV 12985 2011 1518 MOESM2 ESM.jpg, Red ringspot lesions caused by NMV in ''Gomphrena globosa ''Gomphrena globosa'', commonly known as globe amaranth, is an edible plant from the family Amaranthaceae. The round-shaped flower inflorescences are a visually dominant feature and cultivars have been propagated to exhibit shades of magenta, pur ...'' References External links Descriptions of Plant Viruses: ''Narcissus mosaic virus'' {{Taxonbar, from=Q18648990 Viral plant pathogens and diseases Potexviruses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tymovirales
''Tymovirales'' is an order of viruses with five families. The group consists of viruses which have positive-sense, single-stranded RNA genomes. Their genetic material is protected by a special coat protein. Description Tymoviruses are mainly plant pathogens first described in 2004. They are characterised by similarities in their replication-associated polyproteins. These account for the majority of their genomic coding capacity. They are considered to form a group, phylogenetically, referred to as flexiviruses, with filamentous 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 .... References Bibliography * External links ICTV Virus Taxonomy 2009 UniProt Taxonomy {{Use dmy dates, date=April 2017 Virus orders Riboviria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electron Micrograph
A micrograph or photomicrograph is a photograph or digital image taken through a microscope or similar device to show a magnified image of an object. This is opposed to a macrograph or photomacrograph, an image which is also taken on a microscope but is only slightly magnified, usually less than 10 times. Micrography is the practice or art of using microscopes to make photographs. A micrograph contains extensive details of microstructure. A wealth of information can be obtained from a simple micrograph like behavior of the material under different conditions, the phases found in the system, failure analysis, grain size estimation, elemental analysis and so on. Micrographs are widely used in all fields of microscopy. Types Photomicrograph A light micrograph or photomicrograph is a micrograph prepared using an optical microscope, a process referred to as ''photomicroscopy''. At a basic level, photomicroscopy may be performed simply by connecting a camera to a microscope, t ... [...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, i.e ... [...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] |
