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  • Title: Infectious in vitro transcripts from a cloned cDNA of barley yellow dwarf virus.
    Author: Young MJ, Kelly L, Larkin PJ, Waterhouse PM, Gerlach WL.
    Journal: Virology; 1991 Jan; 180(1):372-9. PubMed ID: 1984657.
    Abstract:
    A full-length cDNA clone of barley yellow dwarf virus (BYDV-PAV serotype) has been constructed and fused to the bacteriophage T7 RNA polymerase promoter. RNA transcripts produced in vitro, either capped or uncapped, were infectious in Triticum monococcum protoplasts. Protoplasts inoculated with in vitro-transcribed BYDV RNA accumulated coat protein, synthesized new viral RNAs, and produced virus particles. Aphid feeding on extracts from protoplasts inoculated with in vitro RNA transcripts can be used to transfer the virus progeny to whole plants. Introduction of mutations which interrupt specific BYDV-PAV open reading frames (ORFs) V and VI eliminated infectivity while an ORF I-mutant remained infectious. Infectious RNA transcripts derived from BYDV cDNA clones will facilitate analysis of the molecular aspects of BYDV infection and further enhance our understanding of this economically important virus.
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