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Aphelenchoides Hagueri
''Aphelenchoides'' is a genus of mycetophagous nematodes. Some species are plant pathogenic foliar nematodes. Taxonomy In 1961 Sanwal listed 33 species and provided a key. The most important species of these are ''Aphelenchoides ritzemabosi'', the chrysanthemum foliar nematode; ''Aphelenchoides fragariae'', the spring crimp or spring dwarf nematode of strawberry, which also attacks many ornamentals; and ''Aphelenchoides besseyi ''Aphelenchoides besseyi'' is a plant pathogenic nematode. It is sometimes referred to as ''rice white tip'', ''spring dwarf'', ''strawberry bud'', ''flying strawberry nematode'' or ''strawberry crimp disease'' nematode. This foliar nematode i ...'', causing summer crimp or dwarf of strawberry and white tip of rice. Several species of this genus feed ectoparasitically and endoparasitically on aboveground plant parts. References Bibliography * George Agrios (2005): ''Plant Pathology, Fifth Edition''. Elsevier Academic Press External lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Fischer Von Waldheim
Gotthelf Fischer von Waldheim (russian: Григо́рий Ива́нович Фи́шер фон Ва́льдгейм, translit=Grigórij Ivánovič Fíšer fon Vál'dgejm; 13 October 1771 – 18 October 1853) was a Saxon anatomist, entomologist and paleontologist. Fischer was born as Gotthilf Fischer in Waldheim, Saxony, the son of a linen weaver. He studied medicine at Leipzig. He travelled to Vienna and Paris with his friend Alexander von Humboldt and studied under Georges Cuvier. He took up a professorship at Mainz, and then in 1804 became Professor of Natural History and Director of the Demidov Natural History Museum at the Moscow University. In August 1805 he founded the Société Impériale des Naturalistes de Moscou. Fischer was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1812 and a member of the American Philosophical Society in 1818. Fischer was mainly engaged in the classification of invertebrates, the result of which was hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphelenchoides Besseyi
''Aphelenchoides besseyi'' is a plant pathogenic nematode. It is sometimes referred to as ''rice white tip'', ''spring dwarf'', ''strawberry bud'', ''flying strawberry nematode'' or ''strawberry crimp disease'' nematode. This foliar nematode is found in Africa, North, Central, and South America, Asia, Eastern Europe, and Pacific islands.Bridge, J., and Jim L. Starr, Plant Nematodes of Agricultural Importance - A Colour Handbook. 2007.McGawley, E.C., M.C. Rush, and J.P. Hollis, Occurrence of Aphelenchoides besseyi in Louisiana Rice Seed and Its Interaction with Sclerotium oryzae in Selected Cultivars. J Nematol, 1984. 16(1): p. 65-8.Hoshino, S. and K. Togashi, Effect of Water-Soaking and Air-Drying on Survival of Aphelenchoides besseyiinOryza sativa Seeds. J Nematol, 2000. 32(3): p. 303-8. Morphology ''A. besseyi'' has a well-developed and distinct metacorpus. The stylet is small with well-developed knobs. The tail has a mucro with three points. Males have a r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphelenchoides Bicaudatus
''Aphelenchoides bicaudatus'' is a nematode parasite of '' Elaeidobius kamerunicus'', ''Vigna marina'', and ''Agaricus bisporus''. Distribution In June 1980 ''E. kamerunicus'' were imported from Cameroon to Malaysia. They were needed to pollinate ''Elaeis guineensis'', which until then had been inadequately pollinated by whatever native insects were around. The pupae were found to be severely infested with ''A. bicaudatus'' and so were treated until nematode-free before being released. It occurs commonly as a soil organism in New South Wales. ''A. bicaudatus'' is also found in: Libya, China, India, and Brazil. Protein expression ''A. bicaudatus'' may be distinguished from other '' Aphelenchoides'' and '' Ditylenchus angustus'' and '' D. myceliophagus'' by some of their α- and β-esterase An esterase is a hydrolase enzyme that splits esters into an acid and an alcohol in a chemical reaction with water called hydrolysis. A wide range of different esterases exist that di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphelenchoides Composticola
''Aphelenchoides'' is a genus of mycetophagous nematodes. Some species are plant pathogenic foliar nematodes. Taxonomy In 1961 Sanwal listed 33 species and provided a key. The most important species of these are ''Aphelenchoides ritzemabosi'', the chrysanthemum foliar nematode; ''Aphelenchoides fragariae'', the spring crimp or spring dwarf nematode of strawberry, which also attacks many ornamentals; and ''Aphelenchoides besseyi ''Aphelenchoides besseyi'' is a plant pathogenic nematode. It is sometimes referred to as ''rice white tip'', ''spring dwarf'', ''strawberry bud'', ''flying strawberry nematode'' or ''strawberry crimp disease'' nematode. This foliar nematode i ...'', causing summer crimp or dwarf of strawberry and white tip of rice. Several species of this genus feed ectoparasitically and endoparasitically on aboveground plant parts. References Bibliography * George Agrios (2005): ''Plant Pathology, Fifth Edition''. Elsevier Academic Press External lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphelenchoides Fragariae
Strawberry foliar nematode, or strawberry crimp nematode, is a disease caused by ''Aphelenchoides fragariae'', a plant pathogenic nematode. It is common in strawberries and ornamental plants and can greatly affect plant yield and appearance, resulting in a loss of millions of dollars of revenue. Symptoms used to diagnose the disease are angular, water soaked lesions and necrotic blotches. ''Aphelenchoides fragariae'' is the nematode pathogen that causes the disease. Its biological cycle includes four life stages, three of which are juvenile. The nematode can undergo multiple life cycles in one growing season when favorable conditions are present. The crowns, runners, foliage, and new buds of the plant via stylet penetration or through the stomata can be infected. The best management practices for this disease are sanitation, prevention of induction of the pathogen to the environment, and planting clean seed or starter plants. Importance Foliar nematodes are an important pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphelenchoides Ritzemabosi
''Aphelenchoides ritzemabosi'' (Black currant nematode, Chrysanthemum foliar nematode, Chrysanthemum leaf nematode, Chrysanthemum nematode, Chrysanthemum Foliar eelworm) is a plant pathogenic nematode. It was first scientifically described in 1890 in England. This nematode has a wide host range. Among the most important species affected are Chrysanthemums and strawberries. ''A. ritzemabosi'' is a migratory foliar feeding nematode. It can feed both ectoparasitically and endoparasitically, with the later causing the most significant damage. When adequate moisture is present, this nematode enters the leaves and feeds from inside the tissue. Typical damage is characterized by necrotic zones between the veins of the leaves. Its lifecycle is short; only ten days from egg to mature adult. A single female can lay as many as 3,500 eggs. This pest can be difficult to control. Host plant resistance, hot water treatments, and predatory mites are recommended. Nomenclature and Synon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphelenchoides Saprophilus
''Aphelenchoides'' is a genus of mycetophagous nematodes. Some species are plant pathogenic foliar nematodes. Taxonomy In 1961 Sanwal listed 33 species and provided a key. The most important species of these are ''Aphelenchoides ritzemabosi'', the chrysanthemum foliar nematode; ''Aphelenchoides fragariae'', the spring crimp or spring dwarf nematode of strawberry, which also attacks many ornamentals; and ''Aphelenchoides besseyi ''Aphelenchoides besseyi'' is a plant pathogenic nematode. It is sometimes referred to as ''rice white tip'', ''spring dwarf'', ''strawberry bud'', ''flying strawberry nematode'' or ''strawberry crimp disease'' nematode. This foliar nematode i ...'', causing summer crimp or dwarf of strawberry and white tip of rice. Several species of this genus feed ectoparasitically and endoparasitically on aboveground plant parts. References Bibliography * George Agrios (2005): ''Plant Pathology, Fifth Edition''. Elsevier Academic Press External lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphelenchoides Subtenuis
''Aphelenchoides subtenuis'' is a plant pathogenic nematode. It is an important cause of disease in daffodils (''Narcissus (plant), Narcissus''). References Bibliography * External links Nemaplex, University of California - Aphelenchoides subtenuis Agricultural pest nematodes Aphelenchoides, subtenuis Nematodes described in 1926 {{Secernentea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foliar Nematodes
Foliar nematodes are plant parasitic roundworms in the genus '' Aphelenchoides''. The three most economically important species are ''Aphelenchoides fragariae'', ''A. ritzemabosi'', and ''A. besseyi''. Foliar nematodes are becoming a widespread and serious problem for the ornamental and nursery industries. ''A. fragariae'' causes damage on hundreds of different plants including chrysanthemum, begonia, gloxinia, African violet, cyclamen, and a wide variety of bedding plants and ferns, causing brown to black, vein-delimited lesions on leaf tissue, defoliation, and possible stunting of plants. Biology While many plant parasitic nematodes feed on plant roots, foliar nematodes live and reproduce inside the leaves of plants. The nematodes live within the epidermis and mesophyll tissues of leaves, which causes necrosis and collapse of the palisade and spongy parenchyma tissues. Inside the leaves of plants female nematodes lay one or two eggs a day, with each female producing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
