Properties of Strains of Sweet potato feathery mottle virus and Two Newly Recognized Potyviruses Infecting Sweet Potato in the United States

Plant Disease
E R SoutoC A Clark

Abstract

Some biological and molecular properties of six potyvirus isolates (LSU-1, -2, -3, and -5; 95-2; and 95-6) from sweet potato (Ipomoea batatas) were evaluated. Isolates LSU-1 and -3 and 95-2 were transmitted by Aphis gossypii and Myzus persicae while LSU-2 and -5 were not transmitted by either aphid. The partial nucleotide sequence of the nuclear inclusion b (NIb) and the coat protein (CP) genes of these six isolates were compared with the corresponding sequences of 17 Sweet potato feathery mottle virus (SPFMV) strains and 18 other potyviruses. LSU-1 and -3 had high sequence similarity to the published sequences for Sweet potato virus G (SPVG), did not react with antisera to other known sweet potato viruses, and caused distinct symptoms. We propose to designate these two isolates as SPVG. This report documents the occurrence of this virus in the United States and provides the first characterization of its biological properties. LSU-2 and -5 were distinct in symptomatology; partial Nib, CP nucleotide, and derived amino acid sequence; and serology to other viruses. We propose to call this virus (LSU isolates 2 and 5) Ipomoea vein mosaic virus. The present study revealed a high degree of sequence similarity between 95-6 and the com...Continue Reading

References

Jan 1, 1997·Journal of Virological Methods·A Gibbs, A Mackenzie
Sep 1, 1997·Nucleic Acids Research·S F AltschulD J Lipman
Nov 24, 1999·The Journal of General Virology·J J López-MoyaT P Pirone
Oct 1, 1997·Plant Disease·Farayi ChaviBenedictus J M Verduin

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Citations

Jul 25, 2012·Virus Genes·P E Rodríguez PardinaL Di Feo
Feb 1, 2012·Plant Disease·Christopher A ClarkJari P T Valkonen
Jun 1, 2006·Plant Disease·C D Kokkinos, C A Clark

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