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A Comparison of Some Properties of Elm Mosaic and Tomato Ringspot Viruses. J. P. Fulton, Professor, Department of Plant Pathology, University of Arkansas, Fayetteville 72701; R. W. Fulton, Professor, Department of Plant Pathology, University of Wisconsin, Madison 53706. Phytopathology 60:114-115. Accepted for publication 13 August 1969. DOI: 10.1094/Phyto-60-114.

Although a unilateral protection can be demonstrated between tomato ringspot virus (TmRSV) and elm mosaic virus (EMV), and the two viruses are strikingly similar in physical properties, host range, and symptoms, a study of serological and vector relationships indicates that the two are distinct. Serological comparisons of EMV and several isolates of TmRSV revealed no cross reactions. All isolates of TmRSV were transmitted by Xiphinema americanum, but EMV was not.