Abstract

It has recently been shown that 17 potyvirus isolates infecting maize, sorghum, and sugarcane in Australia and the United States, and previously classified as strains of sugarcane mosaic virus (SCMV), belong to four distinct potyviruses. However, the taxonomic status of other SCMV strains is uncertain at present. Using amino acid composition, high-performance liquid chromatographic peptide profiling of tryptic digests, partial amino acid sequence data, and electro-blot immunoassay of coat proteins, we confirm that the oat-infecting strain of maize dwarf mosaic virus (MDMV-O) from the United States is structurally and serologically closely related to the Australian johnsongrass strain of johnsongrass mosaic virus (JGMV-JG) (...)

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