Number of genera of plant viruses as of 2006

Range ~80 genera
Organism Virus
Reference Rao AL. Genome packaging by spherical plant RNA viruses. Annu Rev Phytopathol. 2006 44: 61-87. p.62 left column top paragraphPubMed ID16480335
Primary Source Fauquet CM, Mayo MA, Manilof J, Desselberger U, Ball LA. 2005. Virus Taxonomy, Rep. ICTV, 8th. London: Elsevier/Academic. 1258 pp.
Comments "Packaging, or encapsidation, of the viral genome by structural protein components leading to the assembly of infectious progeny virions is an essential step in the life cycle of RNA viruses infecting plants and other eukaryotic organisms. At present, recognized plant viruses are classified into 80 genera (primary source) of these, viruses belonging to 25 genera exhibit helical symmetry (rigid rod or flexuous rods), 2 have unknown or no capsid structure, and the remaining 53 genera have icosahedral symmetry (spherical)."
Entered by Uri M
ID 111222