| Potato virus V | |
|---|---|
Virus classification  | |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Pisuviricota |
| Class: | Stelpaviricetes |
| Order: | Patatavirales |
| Family: | Potyviridae |
| Genus: | Potyvirus |
| Species: | Potato virus V |
Potato virus V (PVV) is a plant pathogenic virus of the family Potyviridae .
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Viroids are the smallest infectious pathogens known. They are composed solely of a short strand of circular, single-stranded RNA that has no protein coating. All known viroids are inhabitants of angiosperms, and most cause diseases, whose respective economic importance on humans varies widely.
Theodor Otto Diener is a Swiss-American plant pathologist. In 1971, he discovered that the causative agent of the potato spindle tuber disease is not a virus, but a novel agent, which consists solely of a short strand of single-stranded RNA without a protein capsid, eighty times smaller than the smallest viruses. He proposed to name it, and similar agents yet to be discovered, viroids. Viroids displaced viruses as the smallest known infectious agents.
Comovirinae is a subfamily of viruses in the order Picornavirales, in the family Secoviridae; its genera were formerly classified in the family Comoviridae. Plants serve as natural hosts. There are currently 62 species in this subfamily, divided among 3 genera.
Luteoviridae is a family of viruses. Plants serve as natural hosts. There are currently 51 species in this family, divided among three genera, with seven unassigned species. Diseases associated with this family include: yellowing symptoms.
Potyvirus is a genus of viruses in the family Potyviridae. Plants serve as natural hosts. There are currently 183 species in this genus including the type species Potato virus Y. The genus is named after the type virus. Potyviruses account for ~30% of the currently known plant viruses. Like begomoviruses, members of this genus may cause significant losses in agricultural, pastoral, horticultural and ornamental crops. More than 200 species of aphids spread potyviruses and most are from the subfamily Aphidinae.
Potato yellow dwarf virus (PYDV) is a plant virus of order Mononegavirales, family Rhabdoviridae and genus Alphanucleorhabdovirus. The virus was first identified in 1922 in the US by Barrus and Chupp (1922) who reported a new virus that was killing potatoes. The virus is known for its various effects on potato plants including stunted growth, dwarfing and apical yellowing. The virus also affects the tuber as it causes cracking and malformation. The virus is transmitted by the insect vector Agallia constricta. The insect becomes infected upon feeding on an infected plant and transmits the virus to every plant it feeds upon after this event.
Potato leafroll virus (PLRV) is a member of the genus Polerovirus and family Luteoviridae. The phloem limited positive sense RNA virus infects potatoes and other members of the family Solanaceae. PLRV was first described by Quanjer et al. in 1916. PLRV is transmitted by aphids, primarily the green peach aphid, Myzus persicae. PLRV is one of the most important potato viruses worldwide but particularly devastating in countries with limited resources and management. It can be responsible for individual plant yield losses of over 50%. One estimate suggests that PLRV is responsible for an annual global yield loss of 20 million tons. Symptoms include chlorosis, necrosis and leaf curling.
Andean potato latent virus (APLV) is a plant pathogenic virus of the family Tymoviridae.
Andean potato mottle virus (APMoV) is a plant pathogenic virus of the family Comoviridae.
Potato aucuba mosaic virus (PAMV) is a plant pathogenic virus of the family Alphaflexiviridae.
Potato black ringspot virus (PBRSV) is a plant pathogenic virus of the family Comoviridae.
Potato virus A (PVA) is a plant pathogenic virus of the family Potyviridae.
Potato virus S (PVS) is a plant pathogenic virus. It was first reported in Netherlands.
Potato virus U (PVU) is a pathogenic plant virus discovered in Peru in 1983. PVU characteristically causes leaf malformation and necrotic spotting. Transmitted by mechanical inoculation—including seed-to-seed contact and grafting—PVU is also said to be transferred by nematodes of the genus Longidorus.
Potato virus X (PVX) is a plant pathogenic virus of the family Alphaflexiviridae and the order Tymovirales. It is the type species of the genus Potexvirus.
Potato virus Y (PVY) is a plant pathogenic virus of the family Potyviridae, and one of the most important plant viruses affecting potato production.
Potato yellow mosaic virus (PYMV) is a plant pathogenic virus of the family Geminiviridae.
Sweet potato latent virus (SPLV), formerly designated as sweet potato virus N, was first reported from Taiwan. The virus has flexuous, filamentous particles of approximately 700-750 nm long and induces typical cylindrical inclusion proteins in the cytoplasm of infected cells. The experimental host range of SPLV is wider than that of sweet potato feathery virus (SPFMV), and it induces symptoms on some Chenopodium and Nicotiana species. SPLV is serologically related to, but distinct from SPFMV. Sequence comparison of the 3’-partial sequences showed that SPLV was a distinct species of the genus Potyvirus in the family Potyviridae. The virus is common in China and has also been found in Korea and Rwanda.
Carlavirus, formerly known as the "Carnation latent virus group", is a genus of viruses in the order Tymovirales, in the family Betaflexiviridae. Plants serve as natural hosts. There are currently 53 species in this genus including the type species Carnation latent virus. Diseases associated with this genus include: mosaic and ringspot symptoms.
Secoviridae is a family of viruses in the order Picornavirales. Plants serve as natural hosts. There are currently 86 species in this family, divided among 8 genera or not assigned to a genus. The family was created in 2009 with the grouping of families Sequiviridae, now dissolved, and Comoviridae, now subfamily Comovirinae, along with the then unassigned genera Cheravirus, Sadwavirus, and Torradovirus.