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  • Title: Infection and RNA recombination of Brome mosaic virus in Arabidopsis thaliana.
    Author: Dzianott A, Bujarski JJ.
    Journal: Virology; 2004 Jan 20; 318(2):482-92. PubMed ID: 14972517.
    Abstract:
    Ecotypes of Arabidopsis thaliana supported the replication and systemic spread of Brome mosaic virus (BMV) RNAs. Infection was induced either by manual inoculation with viral RNA or by BMV virions, demonstrating that virus disassembly did not prevent infection. When in vitro-transcribed BMV RNAs 1-3 were used, production of subgenomic RNA4 was observed, showing that BMV RNA replication and transcription had occurred. Furthermore, inoculations of the transgenic Arabidopsis line that expressed a suppressor of RNA interference (RNAi) pathway markedly increased the BMV RNA concentrations. Inoculations with designed BMV RNA3 recombination vectors generated both homologous and nonhomologous BMV RNA-RNA recombinants. Thus, all cellular factors essential for BMV RNA replication, transcription, and RNA recombination were shown to be present in Arabidopsis. The current scope of understanding of the model Arabidopsis plant system should facilitate the identification of these factors governing the BMV life cycle.
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