Plant Virology Department, Plant Pests and Diseases Research Institute, P.O. Box 19395-1454, Tehran, Iran
Plant Protection Department, Science and Research Campus, Islamic Azad University, P.O. Box 14515-775, Tehran, Iran
Agricultural Research Center, Esfahan, Iran
Plant Pathology Department, College of Agriculture, Esfahan University of Technology, Esfahan, Iran
During the spring and summer of 2003, symptoms of mosaic, mottle, and crinkle were observed in cauliflower (Brassica oleracea) and turnip (Brassica rapa) fields in the Qazvin and Esfahan provinces of Iran, respectively. Leaf extracts of these plants, made infective by mechanical inoculation, caused necrotic local lesions on Chenopodium amaranticolor, chlorotic ring spot on Nicotiana tabacum cv. Samsun, and chlorotic local lesions followed by systemic mosaic on Brassica rapa (1). Using double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) and specific polyclonal antibodies (As-0120 and PV-0355) that were kindly prepared by S. Winter (DSMZ, Braunschweig, Germany), the samples were tested for the presence of Radish mosaic virus (RaMV) (family Comoviridae, genus Comovirus). ELISA results showed that the original leaf samples and inoculated indicator plants reacted positively to RaMV antibodies. RaMV has been reported in the United States, Japan, and Europe on turnip and other crucifers (1,2). To our knowledge, this is the first report of RaMV occurring in Iran.
References: (1) R. N. Campbell. Radish mosaic virus. No. 121 in: Descriptions of Plant Viruses. CMI/AAB, Surrey, England, 1973. (2) D. D. Sutic et al. Handb. Plant Virus Diseases. CRC Press, Boca Raton, FL, 1999.