Viral Genomic RNA as a Single Translation Unit 100 Initiation Codon Choice and Translation in Plants 100 Conventional Scanning and Initiation 100 Non-AUG Initiation Codons in Plant Virus RNAs 101 Role of5'- and 3'- Noncoding Regions in Initiation of Translation 101 Access to Internal Genes 103 Divided versus Monopartite Genomes 104 Transcriptional Control: Subgenomic RNAs 104 Non-Orthodox Mechanisms of Initiation 107 Leaky Scanning 107 Internal Ribosome Entry Sites (IRES Elements) 107 Non-Orthodox Mechanisms of Elongation and Termination 108 Readthrough of Leaky Stop Codons 108 Ribosomal...