Potyviridae: Difference between revisions
No edit summary |
No edit summary |
||
| Line 11: | Line 11: | ||
==Description and Significance== | ==Description and Significance== | ||
The Potyviridae family is one of the largest and economically most important families of plant viruses, due to their affect on crops worldwide. Members of the family are characterized by properties such as vector transmission and particle morphology. The name ''Potyviridae'' comes from the "Potato virus Y group." (sources: Götz et al., Janssen et al., [http://www.ncbi.nlm.nih.gov/ICTVdb/ICTVdB/index.htm ICTVdB]) | |||
==Genome Structure== | ==Genome Structure== | ||
| Line 27: | Line 27: | ||
==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. | 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. (sources: Götz et al., Janssen et al.) | ||
==References== | ==References== | ||
Revision as of 19:21, 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
The Potyviridae family is one of the largest and economically most important families of plant viruses, due to their affect on crops worldwide. Members of the family are characterized by properties such as vector transmission and particle morphology. The name Potyviridae comes from the "Potato virus Y group." (sources: Götz et al., Janssen et al., ICTVdB)
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. (sources: Götz et al., Janssen et al.)
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.
