Differentiation of biologically distinct cucumber mosaic virus isolates by PAGE of double-stranded RNA
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Updated: Sep 12, 2026
Isolation of Fidelity Variants of RNA Viruses and Characterization of Virus Mutation Frequency
Published on: June 16, 2011
R D Pares1, M R Gillings, L V Gunn
1Biological and Chemical Research Institute, Rydalmere, NSW, Australia.
Abstract:
Electrophoresis on 5% polyacrylamide was used to analyze dsRNAs of 26 cucumber mosaic virus isolates propagated in Nicotiana tabacum. There was variation between isolates in the migration of each of the dsRNAs 1, 2, and 3. Comparison of the dsRNA profiles enabled each isolate to be allocated to 1 of 7 distinct dsRNA profile types. Two distinct and readily distinguishable isolates were mixed in planta and dsRNA from these infected plants compared with in vitro mixtures of them. All bands from both types were present, indicating that the differences were real and reproducible. This method is of value as a means of classifying cucumber mosaic virus isolates, as it more closely reflects a range of biological characteristics than do other methods currently used.
