Papaya ringspot virus-P: characteristics, pathogenicity, sequence variability and control.

Molecular Plant Pathology
Savarni TripathiD Gonsalves

Abstract

Papaya ringspot virus (PRSV) is an aphid-transmitted plant virus belonging to the genus Potyvirus, family Potyviridae, with a positive sense RNA genome. PRSV isolates belong to either one of two major strains, P or W. The P strains infect both papaya and cucurbits whereas the W strains infect only cucurbits. PRSV-P is found in all major papaya-growing areas. Virions are filamentous, non-enveloped and flexuous measuring 760-800 x 12 nm. Virus particles contain 94.5% protein and 5.5% nucleic acid. The protein component consists of the virus coat protein (CP), which has a molecular weight of about 36 kDa as estimated by Western blot analysis. Density of the sedimenting component in purified PRSV preparations is 1.32 g/cm(3) in CsCl. The PRSV genome consists of a unipartite linear single-stranded positive sense RNA of 10 326 nucleotides with a 5' terminus, genome-linked protein, VPg. The virus is naturally transmitted via aphids in a non-persistent manner. Both the CP and helper component (HC-Pro) are required for vector transmission. This virus can also be transmitted mechanically, and is typically not seed-transmitted. PRSV has a limited number of hosts belonging to the families Caricaceae, Chenopodiaceae and Cucurbitaceae. Propa...Continue Reading

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Citations

Oct 31, 2012·Archives of Virology·Bindu Poudel, Ioannis E Tzanetakis
Feb 28, 2009·Virus Genes·Satendra K MangrauthiaShelly Praveen
Aug 13, 2009·Molecular Biotechnology·Satendra K MangrauthiaShelly Praveen
May 10, 2011·Virus Research·X A Olarte CastilloS Restrepo
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Apr 24, 2014·TheScientificWorldJournal·Md Abul Kalam AzadNik Marzuki Sidik
Apr 10, 2015·Molecular Biotechnology·Yogita MaheshwariBikash Mandal
Mar 21, 2020·Frontiers in Microbiology·Naomi Nzilani MumoFrancesca Stomeo
Jan 31, 2021·Plant Cell Reports·Derry AlvarezPaul Christou
Oct 10, 2018·Virology·Antonette BennettMavis Agbandje-McKenna
Apr 24, 2021·Annual Review of Phytopathology·Xiuling YangAiming Wang

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