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  • Title: Characterization of cucumber mosaic virus. I. Molecular heterogeneity mapping of RNA 3 in eight CMV strains.
    Author: Owen J, Palukaitis P.
    Journal: Virology; 1988 Oct; 166(2):495-502. PubMed ID: 3176343.
    Abstract:
    RNAs from 13 strains of cucumber mosaic virus (CMV) were divided into two groups on the basis of their ability to hybridize to cDNA of either Fny-CMV RNA or WL-CMV RNA. The extent of the cross-hybridization within one of these groups was analyzed by an RNA protection assay. A cDNA clone of RNA 3 of the Fny strain of CMV was placed in a transcription vector between bacterial promoters T3 and T7. Labeled, minus-sense RNA transcripts prepared from all or part of the cDNA to RNA 3 of Fny-CMV were annealed to the genomic RNA of each of a number of cucumoviruses and digested with RNases. The patterns of RNA fragments protected from digestion were specific for each CMV strain and revealed the extent and location of heterogeneity among the viruses as well as within the Fny-CMV natural population. This approach will allow the differences in host range and disease processes to be correlated with variations in genomic RNAs.
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