cDNA cloning and analysis of RNA 2 of a Prunus stem pitting isolate of tomato ringspot virus

  • Hadidi A
  • Powell C
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Abstract

Recombinant plasmids containing sequences derived from the genome of a tomato ringspot virus (TomRSV) isolate associated with both stem pitting disease of stone fruits and apple union necrosis and decline were constructed. Selected inserts were subcloned into the polylinker region of the SP6 transcription vector pSP64. Using the SP6 promoter flanking this region, high specific activity32P-labelled cRNA probes were generated by SP6 RNA polymerase. cRNA probes were specific for TomRSV RNA 2 present in purified virions or in extracts from woody and herbacous hosts. No sequence relatedness was detected between TomRSV RNA 2 and genomic RNA from tobacco ringspot, arabis mosaic, strawberry latent ringspot, or cucumber mosaic virus in Northern blot analysis using TomRSV cRNA probes. These probes detected TomRSV infection in woody and herbaceous hosts in dot-blot hybridization assays. © 1991 Academic Press Ltd.

Author-supplied keywords

  • Apple union necrosis and decline
  • Prunus stemptting
  • cRNA probe
  • detection
  • hybridization
  • tomato ringsport virus

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