Picornavirales
Picornavirales is an order of viruses, which was adopted following a proposal from the year 2007 since 2009 to the taxonomic classification of the official body for Virustaxonomie ( ICTV ). Until then, it spoke of a picornavirus super-group to show the close relationship. The Picornavirales take different families and genera together, contain the non-enveloped viruses with a single-stranded RNA of positive polarity and in which the arrangement of genes and phylogenetic analysis of the viral RNA polymerase and helicase reveal a close relationship. All members of the order have only one open reading frame encoding a polyprotein. Within the order, the virions of different virus groups also have a uniform structure of the capsid with a pseudo - (T = 3 ) symmetry.
The order Picornavirales includes five virus families and three still no family assigned to genera.
- Family Picornaviridae
- Family Dicistroviridae
- Family Marnaviridae
- Family Sequiviridae
- Family Comoviridae
- Genus Iflavirus
- Genus Cheravirus
- Genus Sadwavirus
Evidence
- P. Christian, CM Fauquet et al. Taxonomic Proposal to the ICTV Executive Committee 17 October, 2007 ( full text access )
- O. Le Gall, P. Christian P et al. Picornavirales, a Proposed order of positive -sense single-stranded RNA viruses with a pseudo- T = 3 virion architecture. Arch Virol. (2008) 153 (4): pp. 715-727 PMID 18293057
- H. Sanfacon H, J. Wellink J, et al: . Secoviridae: a Proposed family of plant viruses within the order Picornavirales did Combines the families Sequiviridae and Comoviridae, the unassigned genera Cheravirus and Sadwavirus, and the Proposed genus Torradovirus. Arch Virol. (2009) 154 (5): pp. 899-907 PMID 19350366
- AN Lukashev: Role of recombination in evolution of enteroviruses. Rev Med Virol. (2005 ) 15 ( 3): pp. 157-167 (Review) PMID 15578739