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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] |
Lily Virus X
Lily virus X (LVX) is a pathogenic ssRNA(+) plant virus of the family ''Alphaflexiviridae'' and the order ''Tymovirales''. Description LVX is described in the 4th report of the International Committee on Taxonomy of Viruses, ICTV (1982). It is found primarily in lilies, although more plants are susceptible, and the virus is thought to be only transmitted mechanically. There are no known vectors; however, the application of insecticides effectively reduced the spread of LVX, from which it may be gathered that the virus’ transmission is insect-mediated. Symptoms of this virus are as of yet unknown, obfuscating the capability to examine the extent of natural infection and spread. Structure LVX is a non-enveloped virus with helical symmetry. All potexviruses, including LVX are believed to have slightly less than 9 protein subunits per helical turn. This pattern of nucleocapsid formation causes the nucleocapsid to be an elongated, flexible, filamentous virus like most plant viruses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alternanthera Mosaic Virus
''Alternanthera mosaic virus (AltMV)'' is a plant pathogenic virus. AltMV belongs to the virus genus ''Potexvirus'' and the virus family ''Alphaflexiviridae''. AltMV was first identified in 1999 in Queensland, Australia. The virus was found in ''Alternanthera pugens'' ''(Amaranthaceae)'', a weed found in both the southern USA and Australia. Since then, AltMV has been identified in various ornamental plants in Italy, the United States (Maryland and Pennsylvania, Florida, and New York), and Brazil. This virus has a close serological relationship (ELISA/antiserum to the capsid protein) with another well known ''Potexvirus'' called ''Papaya mosaic virus'' (PapMV). This relationship has led to several examples of misdiagnosis in the past.Eshenaur, B.C., V.E. Jarlfors, K.A. Kelly and J. O'Mara. 1995. Detection of a virus infecting portulaca hybrids in Kentucky and Kansas greenhouses. (Abstract). Proceeds of American Phytopathological Society 85: 1171. Sequencing has shown that the core ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymbidium Mosaic Virus
''Cymbidium mosaic virus'' (CymMV) is a plant pathogenic virus of the family ''Alphaflexiviridae''. ''Cymbidium mosaic virus'' and the '' Odontoglossum ringspot virus'' (ORSV) are two of the most common viruses affecting cultivated orchids worldwide. Infected plants can have less desirable flowers or other problems, causing significant financial losses to orchid growers. The virus has not often been reported in wild orchid populations. It can be found in a wide variety of orchid genera but does not infect plants other than orchids. Once an orchid is infected, the virus spreads throughout the infected plant in a number of weeks. Control measures may include sanitizing pruning equipment between plants. There is an ELISA test available to test for presence of the virus. It is related to the '' Narcissus mosaic virus'' (NMV), the '' Scallion virus X'' (SVX), the ''Pepino mosaic virus'' (PepMV) and the '' Potato aucuba mosaic virus'' (PAMV). Importance Orchids are composed of ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lettuce Virus X
Lettuce virus X (LeVX) is a plant virus that has been found infecting lettuce in the Tehran province of Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni .... Infection is not known to cause symptoms. References Potexviruses Viral plant pathogens and diseases {{Virus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clover Yellow Mosaic Virus
''Clover yellow mosaic virus'' (ClYMV) is a plant pathogenic virus in the genus ''Potexvirus'' and the virus family ''Alphaflexiviridae''. Its flexous rod-shaped particles measure about 539 nm in length. Like other members of the Potexvirus genus, ClYMV is a monopartite strand of positive-sense, single-stranded RNA surrounded by a capsid made for a single viral encoded protein. The genome has been completely sequenced and is 7015 nucleotides long. No insect vector is known. This virus is transmitted by mechanical inoculation, sometime by seeds and by dodder (''Cuscuta campestris''). Potexviruses make banned inclusions made up of layers of parallel virus particles. These inclusions can be seen in the light microscope in leaf strips of infected plant tissue stained with Azure A or Orange-Green stains. For many potexviruses these inclusions can be disrupted during the staining procedures. The banded inclusions of ClYMV (Fig.1) however, remain stable and therefore can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bamboo Mosaic Virus
''Bamboo mosaic virus'' (BaMV) is a plant pathogenic virus in the genus ''Potexvirus'' and the family ''Alphaflexiviridae''. BaMV is a filamentous, flexuous rod, 490 nm in length and 15 nm in width. The virus has been fully sequenced and it is 6366 nucleotides long. Like other members of the genus ''Potexvirus'', BaMV is a monopartite strand of positive-sense, single-stranded RNA surrounded by a capsid made for a single viral encoded protein. No insect vector is known. However, it is easily mechanically transmitted on contaminated tools used for propagation or harvesting. Distribution It was first isolated in 1974 from two species of bamboo (''Bambusa multiples'' and '' B. vulgaris'') in Brazil. In 1991 it was reported in two other bamboo species (''B. oldhammi'' and ''Dendrocalamus latiflorus'') in Taiwan. Bamboo plants infected with this virus have been found in other Pacific Islands like Hawaii and the Philippines. It has also been found in bamboo plants in Australia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandarivirus
''Mandarivirus'' is a subgenus of viruses in the order ''Tymovirales'', family ''Alphaflexiviridae'', genus ''Potexvirus''. There are three species in this subgenus. Diseases associated with this subgenus commonly include yellow ringspot and rapid decline of the tree. Taxonomy The following species are assigned to the subgenus: *''Citrus yellow mottle-associated virus'' *''Citrus yellow vein clearing virus ''Citrus'' is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes. The genus ''Citrus'' is native ...'' *'' Indian citrus ringspot virus'' Structure Viruses in ''Mandarivirus'' are non-enveloped, with flexuous and filamentous geometries. The diameter is around 13 nm. Genomes are linear, around 7.5kb in length. The genome codes for 6 proteins. Life cycle Viral replication is cytoplasmic. Entry into the host cell is achiev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cassava Virus X
''Manihot esculenta'', commonly called cassava (), manioc, or yuca (among numerous regional names), is a woody shrub of the spurge family, Euphorbiaceae, native to South America. Although a perennial plant, cassava is extensively cultivated as an annual crop in tropical and subtropical regions for its edible starchy tuberous root, a major source of carbohydrates. Though it is often called ''yuca'' in parts of Spanish America and in the United States, it is not related to yucca, a shrub in the family Asparagaceae. Cassava is predominantly consumed in boiled form, but substantial quantities are used to extract cassava starch, called tapioca, which is used for food, animal feed, and industrial purposes. The Brazilian farinha, and the related ''garri'' of West Africa, is an edible coarse flour obtained by grating cassava roots, pressing moisture off the obtained grated pulp, and finally drying it (and roasting both in the case of farinha and garri). Cassava is the third-largest so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pathogenic Virus
A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infection, infectious virus particles (virions) attach to and enter susceptible cells. Structural Characteristics Basic structural characteristics, such as genome type, virion shape and replication site, generally share the same features among virus species within the same family. * Double-stranded DNA families: three are non-enveloped (''Adenoviridae'', ''Papillomaviridae'' and ''Polyomaviridae'') and two are enveloped (''Herpesviridae'' and ''Poxviridae''). All of the non-enveloped families have icosahedral capsids. * Partly double-stranded DNA viruses: ''Hepadnaviridae''. These viruses are enveloped. * One family of single-stranded DNA viruses infects humans: ''Parvoviridae''. These viruses are non-enveloped. * Positive single-stranded RNA families: three non-enveloped (''Astroviridae'', ''Caliciviridae'' and ''Picornaviridae'') and four enveloped (''Coronaviridae'', ''Fla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagenaria Mild Mosaic Virus
''Lagenaria'' is a genus of gourd-bearing vines in the squash family (Cucurbitaceae). ''Lagenaria'' contains six species, all of which are indigenous to tropical Africa."Pollinators and biological diversity: the case of the bottle gourd (''Lagenaria siceraria'') in Kenya" by Morimoto Y., Gikungu M., and Maundu P., year 2004 "Notes on ''Lagenaria'' and ''Cucurbita'' (''Cucurbitaceae'')" , by Herwig Teppner, year 2004 on page 252. The best-known species, the |
Hydrangea Ringspot Virus
Hydrangea ringspot virus (HRSV) is a plant pathogenic virus of 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 ...''. External linksICTVdB - The Universal Virus Database: Hydrangea ringspot virus Potexviruses Viral plant pathogens and diseases {{Virus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
