Isolation and Partial Characterization of a Tobamovirus from Flowering Dogwood in Tennessee. Bradford B. Reddick, Assistant Professor, Department of Entomology and Plant Pathology, University of Tennessee, Knoxville 37901. . Plant Dis. 73:174-176. Accepted for publication 20 September 1988. Copyright 1989 The American Phytopathological Society. DOI: 10.1094/PD-73-0174.

One hundred forty-five flowering dogwood trees (Cornus florida) used as propagative material were assayed by mechanical inoculation to herbaceous test plants for virus incidence. Only one virus was isolated from one tree, which upon examination with an electron microscope was found to have tobamoviruslike particles. This virus, designated ToMV-DW, was compared with known tobacco mosaic, tobacco mild green mosaic, and tomato mosaic virus isolates using particle morphology, host-range studies, serological tests, and whole virion gel electrophoresis. ToMV-DW was found to be a distinct isolate of tomato mosaic virus.