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  • Title: Characterisation of several heterogeneous species of defective RNAs derived from RNA 3 of cucumber mosaic virus.
    Author: López C, Aramburu J, Galipienso L, Nuez F.
    Journal: Arch Virol; 2007; 152(3):621-7. PubMed ID: 17122894.
    Abstract:
    Preparations of double-stranded RNAs (dsRNAs) extracted from Nicotiana tabacum cv Xanthi plants infected with a subgroup IB isolate of Cucumber mosaic virus (CMV) were found to contain a heterogeneous population of defective RNAs (D-RNAs) derived from RNA 3. Characterised D-RNAs ranged in size from 1.5 to 1.9 kb and were derived either by a single in-frame deletion within the 3a or 3b genes or by means of double in-frame deletions within both genes. Also, northern blot hybridisation showed two other types of RNA derived from RNA 3: (a) RNA species of ca. 0.7 kb containing the 3'-terminus but lacking the 5'-terminus, which could be 3'-coterminal subgenomic of D-RNAs derived from the 3b gene and (b) RNA species of unknown origin of ca. 0.8 kb containing the 5'-terminus but lacking the 3'-terminus.
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