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A Virus Related to Cucumber Mosaic Virus Isolated from Imported Ixora Plants. H. E. Waterworth, Research Plant Pathologist, Agricultural Research Service, U. S. Department of Agriculture, Glenn Dale, Maryland 20769; W. R. Povish, Technician, Agricultural Research Service, U. S. Department of Agriculture, Glenn Dale, Maryland 20769. Phytopathology 65:728-729. DOI: 10.1094/Phyto-65-728.

A virus was isolated from flowers of Ixora plants with mosaic imported from the Philippines. By host range, serological, and RNA characteristics, the virus was considered to be a strain of cucumber mosaic virus (CMV-Ix). However, in comparative studies, CMV-Ix was serologically distinct from CMV strains D, Q, and S, and differed in symptomatology on several host species, including cucumber, tomato, and datura. Antiserum, produced in a rabbit with formylated antigen, rose to a titer of 1:512 in successive bleedings. Virus particles maintained their structural integrity when stained with phosphotungstic acid without previous fixing.