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| Virus classification | ||||||
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Nepoviruses or nematode transmitted polyhedral viruses, are a genus of plant viruses of the family Comoviridae. Virus classification involves naming and placing Viruses into a taxonomic system An RNA virus is a Virus that has RNA (ribonucleic acid as its Genetic material. The Comoviridae are a family of Viruses including the following genera Genus Comovirus; type species Cowpea mosaic A genus (plural genera from Γένος Latin genus "descent family type gender" is a low-level Taxonomic Plant viruses are Viruses affecting Plants.Plant viruses like all other viruses are obligate intracellular Parasites that do not have the molecular The Comoviridae are a family of Viruses including the following genera Genus Comovirus; type species Cowpea mosaic Nepoviruses, unlike the other two genera (comovirus and fabavirus) in the family Comoviridae, are transmitted by nematodes. The nematodes or roundworms ( Phylum Nematoda from Greek (nema "thread" + -ode "like" are one of the most common
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Genome
Nepoviruses are classified as type IV viruses under the Baltimore classification system, and consequently contain bipartite, linear, single stranded positive sense RNA genomes. A virus (from the Latin virus meaning Toxin or Poison) is a sub-microscopic infectious agent that is unable Virus classification involves naming and placing Viruses into a taxonomic system Ribonucleic acid ( RNA) is a Nucleic acid that consists of a long chain of Nucleotide units In classical genetics the genome of a Diploid Organism including Eukarya refers to a full set of chromosomes or genes in a Gamete, thereby The two genome segments are encapsulated separately into two different icosahedral particles. In Geometry, an icosahedron ( Greek: eikosaedron, from eikosi twenty + hedron seat /ˌaɪ Each of the genome segments produces a different polypeptide, which under goes a series of steps (i. e. proteolysis, and other post-translational modifications) in order to produce a functional protein. Proteolysis is the directed degradation ( digestion) of Proteins by cellular Enzymes called Proteases or by intramolecular digestion Posttranslational modification (PTM is the chemical modification of a Protein after its translation.
RNA1
The first segment (RNA1) is approximately 8,000 nucleotides in length and appears as a single copy in each B type virion. Nucleotides are Organic compounds that consist of three joined structures a nitrogenous base a Sugar, and a Phosphate group A virus (from the Latin virus meaning Toxin or Poison) is a sub-microscopic infectious agent that is unable It encodes the proteins that are important in replication and is the first gene to be activated. Proteins are large Organic compounds made of Amino acids arranged in a linear chain and joined together by Peptide bonds between the Carboxyl
RNA2
The second segment (RNA2) is approximately 4,000–7,000 nucleotides in length and usually appears as a single copy in each M type virion. It encodes the proteins that are important in cell-cell transmission and evasion of cellular defenses.
Species
There are many members of the genus Nepovirus including the species:
- tobacco ringspot virus
- cherry leaf roll virus
- beet ringspot virus
- raspberry ringspot virus
References
- Notes on Genus: Nepovirus. Tobacco ringspot virus (TRSV is a plant pathogenic virus Cherry leaf roll virus (CLRV is a plant pathogenic virus of the family Comoviridae. Raspberry ringspot virus (RRSV is a plant pathogenic virus of the family Comoviridae. Retrieved on 2007-08-06. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 1538 - Bogotá, Colombia, is founded by Gonzalo Jiménez de Quesada.
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