Introduction -- lant viruses and their classification -- Architecture and assembly of virus particles -- Symptoms and host range -- Agents resembling or altering virus diseases -- Genome composition, organization, and expression -- Replication of plant viruses -- Origins and evolution of plant viruses -- Virus-plant interactions: RNA silencing -- ovement of viruses within plants -- Virus-plant interactions in non-permissive and permissive hosts -- lant to plant movement -- Assay, detection, and diagnosis of plant viruses -- Ecology, epidemiology, and control of plant viruses -- Plant viruses and technology -- Plant virus viromics: involvement of genomes of three organisms- virus, host, and vector -- ppendixes: A. Profiles of families and genera of plant viruses -- . Plant virus biological properties -- Plant virus genomes -- List of plant virus names in alphabetical order and their abbreviations that are used in the ninth ICTV report.