The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform
Terumi Tamada - One of the best experts on this subject based on the ideXlab platform.
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mapping functions on the multipartite genome of beet necrotic yellow vein virus
Annual Review of Phytopathology, 1992Co-Authors: K E Richards, Terumi TamadaAbstract:Beet necrotic yellow vein virus (BNYVV) is a fungus-transmitted soilborne virus responsible for rhizomania disease of sugar beet (Beta vulgaris L. var. saccharifera). As more and more viruses with fungal vectors are detected (3) these pathogens have been the subject of growing interest, leading to attempts at classification based both upon the nature of the vector and the properties of the virus. In 1987, the International Committee on Virus Taxonomy classified BNYVV as a possible member of the recently proposed furovirus group fungus-transmitted rod-shaped virions; type member: soilborne wheat mosaic virus (SBWMV) (56). Furoviruses have rigid rod-shaped virions, plus-strand RNA genomes, are generally bipartite and are transmitted by soilborne fungi of the family Plasmodiophorales. In addition to SBWMV, other accepted members include beet soilborne virus (BSBV), broad bean necrosis virus (BBNV), oat golden stripe virus (OGSV), peanut clump virus (PCV) and
K E Richards - One of the best experts on this subject based on the ideXlab platform.
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mapping functions on the multipartite genome of beet necrotic yellow vein virus
Annual Review of Phytopathology, 1992Co-Authors: K E Richards, Terumi TamadaAbstract:Beet necrotic yellow vein virus (BNYVV) is a fungus-transmitted soilborne virus responsible for rhizomania disease of sugar beet (Beta vulgaris L. var. saccharifera). As more and more viruses with fungal vectors are detected (3) these pathogens have been the subject of growing interest, leading to attempts at classification based both upon the nature of the vector and the properties of the virus. In 1987, the International Committee on Virus Taxonomy classified BNYVV as a possible member of the recently proposed furovirus group fungus-transmitted rod-shaped virions; type member: soilborne wheat mosaic virus (SBWMV) (56). Furoviruses have rigid rod-shaped virions, plus-strand RNA genomes, are generally bipartite and are transmitted by soilborne fungi of the family Plasmodiophorales. In addition to SBWMV, other accepted members include beet soilborne virus (BSBV), broad bean necrosis virus (BBNV), oat golden stripe virus (OGSV), peanut clump virus (PCV) and
Terry Colberg - One of the best experts on this subject based on the ideXlab platform.
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Beet necrotic yellow vein virus accumulates inside resting spores and zoosporangia of its vector Polymyxa betae BNYVV infects P. betae
Virology Journal, 2007Co-Authors: Jeanmarie Verchot Lubicz, Charles M Rush, Mark Payton, Terry ColbergAbstract:Background Plasmodiophorids and chytrids are zoosporic parasites of algae and land plant and are distributed worldwide. There are 35 species belonging to the order Plasmodiophorales and three species, Polymyxa betae , P. graminis , and Spongospora subterranea , are plant viral vectors. Plasmodiophorid transmitted viruses are positive strand RNA viruses belonging to five genera. Beet necrotic yellow vein virus (BNYVV) and its vector, P. betae , are the causal agents for rhizomania. Results Evidence of BNYVV replication and movement proteins associating with P. betae resting spores was initially obtained using immunofluorescence labeling and well characterized antisera to each of the BNYVV proteins. Root cross sections were further examined using immunogold labeling and electron microscopy. BNYVV proteins translated from each of the four genomic and subgenomic RNAs accumulate inside P. betae resting spores and zoospores. Statistical analysis was used to determine if immunolabelling detected viral proteins in specific subcellular domains and at a level greater than in control samples. Conclusion Virus-like particles were detected in zoosporangia. Association of BNYVV replication and movement proteins with sporangial and sporogenic stages of P. betae suggest that BNYVV resides inside its vector during more than one life cycle stage. These data suggest that P. betae might be a host as well as a vector for BNYVV
Jeanmarie Verchot Lubicz - One of the best experts on this subject based on the ideXlab platform.
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Beet necrotic yellow vein virus accumulates inside resting spores and zoosporangia of its vector Polymyxa betae BNYVV infects P. betae
Virology Journal, 2007Co-Authors: Jeanmarie Verchot Lubicz, Charles M Rush, Mark Payton, Terry ColbergAbstract:Background Plasmodiophorids and chytrids are zoosporic parasites of algae and land plant and are distributed worldwide. There are 35 species belonging to the order Plasmodiophorales and three species, Polymyxa betae , P. graminis , and Spongospora subterranea , are plant viral vectors. Plasmodiophorid transmitted viruses are positive strand RNA viruses belonging to five genera. Beet necrotic yellow vein virus (BNYVV) and its vector, P. betae , are the causal agents for rhizomania. Results Evidence of BNYVV replication and movement proteins associating with P. betae resting spores was initially obtained using immunofluorescence labeling and well characterized antisera to each of the BNYVV proteins. Root cross sections were further examined using immunogold labeling and electron microscopy. BNYVV proteins translated from each of the four genomic and subgenomic RNAs accumulate inside P. betae resting spores and zoospores. Statistical analysis was used to determine if immunolabelling detected viral proteins in specific subcellular domains and at a level greater than in control samples. Conclusion Virus-like particles were detected in zoosporangia. Association of BNYVV replication and movement proteins with sporangial and sporogenic stages of P. betae suggest that BNYVV resides inside its vector during more than one life cycle stage. These data suggest that P. betae might be a host as well as a vector for BNYVV
C Jacquier - One of the best experts on this subject based on the ideXlab platform.
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infection of cereals and grasses by isolates of polymyxa graminis Plasmodiophorales
Annals of Applied Biology, 1994Co-Authors: M J Adams, C JacquierAbstract:Summary The host range of isolates of Polymyxa was tested in mono-fungal sand cultures. Fourteen isolates of P. graminis, obtained from barley, wheat, oats or Poa annua and from several different countries, all infected barley and all but one infected wheat. Rye was also a good host, whereas oats (nine cultivars), Lolium multiflorum and Poa pratensis became only slightly infected. Wheat cultivars differed in susceptibility, with Galahad much more resistant than Avalon. Several common weed and pasture grasses were not infected by the two isolates tested. A range of wild Hordeum spp. were mostly susceptible to P. graminis and/or barley mild mosaic virus, which it transmits. An isolate of P. betae, used for comparison, caused slight infection on oats but not on other cereals. The variation within and between species of Polymyxa needs more detailed investigation.