Pratylenchus

	Pratylenchus ''Pratylenchus'' is a genus of nematodes known commonly as lesion nematodes.Crow, W. TAmaryllis lesion nematode, ''Pratylenchus hippeastri''.EENY-546. University of Florida IFAS. 2012. They are parasitic on plants and are responsible for root lesion disease on many taxa of host plants in temperate regions around the world. Lesion nematodes are migratory endoparasites that feed and reproduce in the root and move around, unlike the cyst or root-knot nematodes, which may stay in one place. They usually only feed on the cortex of the root.Lesion nematodes. University of Illinois Extension. 1999. Species are distinguished primarily by the morphology of the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Brachyurus ''Pratylenchus brachyurus'' is a plant parasitic nematode. Introduction ''Pratylenchus brachyurus'', like many other plant-parasitic nematodes, are microscopic worms that can be damaging to many agricultural crops. Across the world, many billions of dollars each year are lost due to the damaging abilities of nematodes on cash crops. ''P. brachyurus'' is a migratory endoparasite that enters the roots and moves throughout the root tissue while completing its life cycle. History Under the old classification system based on morphology, these nematodes were under the Class Adenophorea. This changed in 2004 when a new classification system was presented by De Ley and Blaxter using SSU rDNA for comparison between different species of nematodes. Using this new system, De Ley and Blaxter placed ''P. brachyurus'' in the Class Chromadorea, Order Rhabditida. In 1929 Godfrey first described ''P. brachyurus'' as the main cause for pineapple-root disease and called them ''Tylenchus brachy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Penetrans ''Pratylenchus penetrans'' is a species of nematode in the genus ''Pratylenchus'', the lesion nematodes. It occurs in temperate regions worldwide, regions between the subtropics and the polar circles. It is an animal that inhabits the roots of a wide variety of plants and results in necrotic lesions on the roots. Symptoms of ''P. penetrans'' make it hard to distinguish from other plant pathogens; only an assay of soil can conclusively diagnose a nematode problem in the field. ''P. penetrans'' is physically very similar to other nematode species, but is characterized by its highly distinctive mouthpiece. ''P. penetrans'' uses its highly modified mouth organs to rupture the outer surface of subterranean plant root structures. It will then enter into the root interior and feed on the plant tissue inside. ''P. penetrans'' is considered to be a crop parasite and farmers will often treat their soil with various pesticides in an attempt to eliminate the damage caused by an infestatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Alleni ''Pratylenchus alleni'' is a migratory endoparasitic nematode, living inside of plant roots and feeding on parenchyma cells in the root cortex. ''P. alleni'' is an obligate biotroph, meaning it must have a living host in order to survive. Due to their incredibly broad host range, ''Pratylenchus'' species fall third in total economic impact, finishing just behind cyst nematodes (''Heterodera & Globodera'') and root knot nematodes (''Meloidogyne)''. In Canada, it was isolated for the first time in 2011 in a soybean field. History ''Pratylenchus alleni'', also referred to as the Root Lesion Nematode, was initially found in the U.S. while infesting nine different varieties of soybeans within a single field in El Dorado, Illinois. Distribution ''Pratylenchus alleni'' has been found all across the globe in almost every cool, temperate and tropical climates and growing conditions. Although it is more frequently found in Asia, Europe, and North, Central and South America. Morphology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Zeae ''Pratylenchus zeae'' is a plant-pathogenic nematode found on potatoes, maize, cereal, tobacco, coffee, blackberry, and found most often on sugarcane. Morphology Female is slender, 0.4–0.55 mm long. Body almost straight when heated. Low and flat lip region. Labial region not offset from the body. Short and strong stylet with well- developed basal knobs. Conical, rounded tail. Esophagus overlaps ventrally. Monovarial, oviduct indistinct, prodelphic and short uterus. Phasmids slightly posterior to mid-tail. Male is extremely rare, not essential for reproduction. Similar to female except for sexual dimorphism. Spicules slender.Castillo, Pablo, Vovlas, Nicola (2007). ''Nematology Monographs and Perspectives'', Volume 6 : ''Pratylenchus'' (Nematoda : Pratylenchidae) : Diagnosis, Biology, Pathogenicity and Management. Brill Academic Publishers. Economic importance Nematode becomes a concern to farmers when the number feeding on the roots exceeds a certain threshold, above ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Scribneri ''Pratylenchus scribneri'' is a plant pathogenic nematode. It is one of the major plant-parasitic nematodes infecting potato The potato is a starchy food, a tuber of the plant ''Solanum tuberosum'' and is a root vegetable native to the Americas. The plant is a perennial in the nightshade family Solanaceae. Wild potato species can be found from the southern Unit ...es. References External links Nemaplex, University of California - Pratylenchus scribneri scribneri Plant pathogenic nematodes {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Goodeyi ''Pratylenchus goodeyi'' is a plant pathogenic nematode infecting bananas. It is native to the mountainous regions of Africa. There it is considered the second most devastating nematode after ''R. similis'', especially under poor management. References External links Nemaplex, University of California - Pratylenchus goodeyi goodeyi Plant pathogenic nematodes Banana diseases {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Vulnus ''Pratylenchus vulnus'' (also known by the common names Walnut meadow nematode and Walnut root-lesion nematode) is a species of plant pathogenic nematode best known for infecting Persian walnut. It is also known to infest potatoes, apricots, peaches and nectarines, holiday cacti, 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 External links Nemaplex, University of California - ''Pratylenchus vulnus'' vulnus Plant pathogenic nematodes Grape pest nematodes {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Pratensis ''Pratylenchus pratensis'' is a plant pathogenic nematode. References External links Nemaplex, University of California - Pratylenchus pratensis pratensis Plant pathogenic nematodes {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Neglectus ''Pratylenchus neglectus'' is a plant-pathogenic nematode infecting potato, alfalfa and mint. References External links ''Pratylenchus neglectus''.Nemaplex. University of California, Davis. neglectus Plant pathogenic nematodes Potato diseases Nematodes described in 1941 {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Coffeae Pratylenchus coffeae is a plant-pathogenic nematode infecting several hosts including potato, banana, sweet potato, strawberry, Persian violet, peanut and citrus ''Citrus'' is a genus of flowering plant, flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as Orange (fruit), oranges, Lemon, lemons, grapefruits, pomelos, and lim .... References External links ''Pratylenchus coffeae''.Nemaplex. University of California, Davis. coffeae Plant pathogenic nematodes Potato diseases Banana diseases Root vegetable diseases Citrus pests Nematodes described in 1951 {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Pratylenchus Crenatus ''Pratylenchus crenatus'' is a plant pathogenic nematode infecting potatoes. References External links crenatus Plant pathogenic nematodes Potato diseases Nematodes described in 1960 {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]