Potyviridae: Difference between revisions
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===Genera=== | ===Genera=== | ||
'' | ''[[Potyvirus]]'', ''Bymovirus'', ''Ipomovirus'', ''Macluravirus'', ''Rymovirus'', ''Tritimovirus'' | ||
==Description and Significance== | ==Description and Significance== | ||
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==Genome Structure== | ==Genome Structure== | ||
The Potyviridae genome consist of either one molecule or two segments of linear positive-sense single stranded RNA. The complete genome is 8500-10000 nucleotides in length. The 3'-terminus has a poly (A) tract. The 5'-terminus has a genome-linked protein (VPg). (source: [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/index.htm ICTVdB]) | |||
==Virion Structure of a Potyvirus== | ==Virion Structure of a Potyvirus== | ||
Potyviridae virions consist of a non-enveloped capsid. The capsid is elongated, filamentous, and exhibits helical symmetry. The size of virions in the family vary, but are either 680-900nm, 500-600nm, or 200-300nm in length. Virions have a width of 12-15nm. (source: [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/index.htm ICTVdB]) | |||
==Reproduction Cycle of a Potyvirus in a Host Cell== | ==Reproduction Cycle of a Potyvirus in a Host Cell== | ||
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==Viral Ecology & Pathology== | ==Viral Ecology & Pathology== | ||
Potyviruses infect plants, causing severe economic damage to crops worldwide. The genera are defined by their transmission vector: ''[[Potyvirus|Potyviruses]]'' and ''Macluraviruses'' are aphid-borne; ''Bymoviruses'' are transmitted by plasmodiphorids; ''Rymoviruses'' and ''Tritimoviruses'' are transmitted by mites; and ''Ipomoviruses'' are transmitted by whiteflies. | |||
==References== | ==References== | ||
[http://www.ccma.csic.es/dpts/prot/afereres/aphid%20attraction%20to%20infected%20plants.pdf Fereres et al. "Aphid Attraction and Preference for Soybean and Pepper Plants Infected with Potyviridae." ''Annals of the Entomological Society of America'' 92.4 (1999): 542-548.] | |||
Götz et al. "Molecular analyses of the coat protein region of different viruses on Poaceae belonging to the Potyviridae." ''Agronomie'' 15.7-8 (1995): 491-494. | |||
[http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/index.htm ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/] | |||
Janssen et al. "Absence of a coding region for the helper component-proteinase in the genome of cucumber vein yellowing virus, a whitefly-transmitted member of the Potyviridae." '' Archives of Virology'' 150.7 (2005): 1439-1447. | |||
Revision as of 16:11, 5 July 2006
Baltimore Classification
Higher order taxa
Virus; ssRNA positive-strand viruses, no DNA stage; Potyviridae
Genera
Potyvirus, Bymovirus, Ipomovirus, Macluravirus, Rymovirus, Tritimovirus
Description and Significance
Genome Structure
The Potyviridae genome consist of either one molecule or two segments of linear positive-sense single stranded RNA. The complete genome is 8500-10000 nucleotides in length. The 3'-terminus has a poly (A) tract. The 5'-terminus has a genome-linked protein (VPg). (source: ICTVdB)
Virion Structure of a Potyvirus
Potyviridae virions consist of a non-enveloped capsid. The capsid is elongated, filamentous, and exhibits helical symmetry. The size of virions in the family vary, but are either 680-900nm, 500-600nm, or 200-300nm in length. Virions have a width of 12-15nm. (source: ICTVdB)
Reproduction Cycle of a Potyvirus in a Host Cell
Viral Ecology & Pathology
Potyviruses infect plants, causing severe economic damage to crops worldwide. The genera are defined by their transmission vector: Potyviruses and Macluraviruses are aphid-borne; Bymoviruses are transmitted by plasmodiphorids; Rymoviruses and Tritimoviruses are transmitted by mites; and Ipomoviruses are transmitted by whiteflies.
References
Götz et al. "Molecular analyses of the coat protein region of different viruses on Poaceae belonging to the Potyviridae." Agronomie 15.7-8 (1995): 491-494.
ICTVdB - The Universal Virus Database, version 4. http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/
Janssen et al. "Absence of a coding region for the helper component-proteinase in the genome of cucumber vein yellowing virus, a whitefly-transmitted member of the Potyviridae." Archives of Virology 150.7 (2005): 1439-1447.
