ISHS Acta Horticulturae 94: XI International Symposium on Fruit Tree Virus Diseases
CUCUMBER MOSAIC VIRUS FROM PRUNUS DOMESTICA: SOME DISEASES INCITED IN HERBACEOUS SPECIES IN THE PRESENCE AND ABSENCE OF A SMALL REPLICATING RNA |
| Authors: | H.E. WATERWORTH, J.M. KAPER |
| Abstract:
An isolate of cucumber mosaic virus from plum incited typical shoestring mosaic symptoms in tomato plants, but after six serial transfers in Xanthi tobacco plants, the virus killed tomato plants. Upon analysis of the virus, a fifth RNA component was observed which was unrelated to the genomic RNA's. Its presence correlated with increased disease severity in tomato, but with reduced disease severity in 9 of 19 other experimental species. Yields of purified virus from plants inoculated with CMV-containing RNA 5 was 50 to 90% less than that from control plants; however, 20–25% of the RNA isolated from this virus consisted of RNA 5. This fifth RNA regulates disease severity caused by strains of CMV. | |
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