Papaya ringspot virus
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- Work cat.: Lius, S. Characterization and evaluation of papayas genetically transformed with the coat protein gene of papaya ringspot virus, 1994:leaf iv, etc. (PRV; member of Potyvirus genus)
- Encyc. of plant pathology, c2001(papaya ringspot virus (PRSV), a member of the Potyvirus genus)
- Virus taxonomy, c2000:p. 709 (papaya ringspot virus; alternative name: watermelon mosaic virus 1; PRSV)
- Cornell University vegetable MD online, Jan. 8, 2003(Papaya ringspot potyvirus, PRSV; formerly WMV-1)
- Springer index of viruses, 2001:p. 846 (Papaya ringspot virus, PRSV, syn.: Watermelon mosaic virus 1)
Papaya ringspot virus (PRSV) is a pathogenic plant virus in the genus Potyvirus and the virus family Potyviridae which primarily infects the papaya tree. The virus is a non-enveloped, flexuous rod-shaped particle that is between 760–800 nm long and 12 nm in diameter. It is transmitted between plants by mechanical activities like pruning and by numerous aphid species such as Myzus persicae. No seed transmission has been detected. There are two major types of this virus, but both are serologically indistinguishable and are so closely genetically related that they are now considered the same virus species. The type that gave the virus its name are the Type P isolates (PRSV-P). This type infects papaya and several members of the melon family (Cucurbitaceae). The other type, Type W isolates (PRSV-W), does not infect papaya. Isolates of PRSV-W do infect cucurbits such as watermelon, cucumber, and squash and were originally known as Watermelon mosaic virus 1.
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