Potato Virus U

	Potato Virus U ''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 ''Longidorus'' is a genus of needle nematodes. Some of its species are plant pests. They may also transmit important plant viruses such as the potato virus U or the cacao necrosis virus. Species are known to infest narcissus, alfalfa, bee ...''. References External linksFamily Groups—The Baltimore Method Nepoviruses Viral plant pathogens and diseases {{Virus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Firm and Happy for the Union" , national_anthem = "National Anthem of Peru" , march = "March of Flags" , image_map = PER orthographic.svg , map_caption = , image_map2 = , capital = Lima , coordinates = , largest_city = capital , official_languages = Peruvian Spanish, Spanish , languages_type = Co-official languages , languages = , ethnic_groups = , ethnic_groups_year = 2017 , demonym = Peruvians, Peruvian , government_type = Unitary state, Unitary Semi-presidential system, semi-presidential republic , leader_title1 = President of Peru, President ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with Arthropod, arthropods, Tardigrade, tardigrades and other moulting animalia, animals in the clade Ecdysozoa, and unlike platyhelminthe, flatworms, have tubular digestion, digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Longidorus ''Longidorus'' is a genus of needle nematodes. Some of its species are plant pests. They may also transmit important plant viruses such as the potato virus U or the cacao necrosis virus. Species are known to infest narcissus, alfalfa, beet, caneberries, lettuce, grape A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus ''Vitis''. Grapes are a non- climacteric type of fruit, generally occurring in clusters. The cultivation of grapes began perhaps 8,000 years ago, ... and citruses References Bibliography * * * Enoplea genera Longidoridae Grape pest nematodes {{Enoplea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Nepoviruses ''Nepovirus'' is a genus of viruses in the order ''Picornavirales'', in the family ''Secoviridae'', in the subfamily ''Comovirinae''. Plants serve as natural hosts. There are 40 species in this genus. Nepoviruses, unlike the other two genera (''Comovirus'' and ''Fabavirus'') in the subfamily ''Comovirinae'', are transmitted by nematodes. Taxonomy The genus contains the following species: '' Aeonium ringspot virus'' '' Apricot latent ringspot virus'' '' Arabis mosaic virus'' '' Arracacha virus A'' '' Artichoke Aegean ringspot virus'' '' Artichoke Italian latent virus'' '' Artichoke yellow ringspot virus'' '' Beet ringspot virus'' '' Blackcurrant reversion virus'' '' Blueberry latent spherical virus'' '' Blueberry leaf mottle virus'' '' Cassava American latent virus'' '' Cassava green mottle virus'' '' Cherry leaf roll virus'' '' Chicory yellow mottle virus'' '' Cocoa necrosis virus'' '' Crimson clover latent virus'' '' Cycas necrotic stunt virus'' '' Grapevin ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]