1887

Abstract

SUMMARY

The burdocks, and , are afflicted with burdock stunt disease (BSD). Neither virus-like particles nor mycoplasma-like organisms have been detected in the extracts and thin sections of diseased leaves, but two disease-specific RNA species, RNA-1 and RNA-2, were found to be associated with BSD. They had a low molecular weight (RNA-1, 1.8 × 10 to 1.9 × 10; RNA-2, 1.7 × 10) estimated by analytical polyacrylamide gel electrophoresis. Preparations of RNA-1 and RNA-2 contained circular molecular structures as shown by electron microscopy. We conclude that BSD RNA-1 and RNA-2 are viroid-like and that BSD may be a disease of viroid aetiology.

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/content/journal/jgv/10.1099/0022-1317-64-2-409
1983-02-01
2022-01-28
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