VIEW ARTICLE

Ecology and Epidemiology

Differential Transmission of Prunus Tomato Ringspot Virus Strains by Xiphinema californicum. J. W. Hoy, Graduate student, Agricultural Research Service, U.S. Department of Agriculture, Department of Plant Pathology, University of California, Davis 95616; S. M. Mircetich(2), and B. F. Lownsbery(3). (2)Research plant pathologist, Agricultural Research Service, U.S. Department of Agriculture, Department of Plant Pathology, University of California, Davis 95616; (3)Professor, Division of Nematology, University of California, Davis 95616. Phytopathology 74:332-335. Accepted for publication 4 October 1983. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1984. DOI: 10.1094/Phyto-74-332.

Three tomato ringspot virus (TmRSV) strains associated with the prune brownline (PBL), Prunus stem pitting (PSP), and cherry leaf mottle (CLM) diseases of various hosts in the genus Prunus were found to be serologically related, but not identical. TmRSV-PBL, TmRSV-PSP, and TmRSV-CLM were each transmitted by Xiphinema californicum from mechanically inoculated cucumber (Cucumis sativus) to cucumber and certain Prunus species. TmRSV-PBL was transmitted to peach (Prunus persica) and Myrobalan plum (P. cerasifera), TmRSV-PSP was transmitted to peach, and TmRSV-CLM was transmitted to Mahaleb cherry (P. mahaleb), but not to peach or sweet cherry (P. avium). X. californicum transmitted TmRSV-PBL from cucumber to 24 of 25 cucumber and eight of 15 peach. TmRSV-PSP was transmitted to 10 of 10 cucumber and eight of 10 peach, and TmRSV-CLM was transmitted to three of 22 cucumber and none of 10 peach. Apparently, X. californicum is an efficient vector of TmRSV-PBL and TmRSV-PSP, but an inefficient vector of TmRSV-CLM.