Scientific name Picornavirales Rank Order | ||
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Lower classifications Picornavirus, Nepovirus, Cowpea mosaic virus, Tomato ringspot virus, Grapevine fanleaf virus | ||
The Picornavirales are an order of viruses with vertebrate, insect, and plant hosts. This group consists of viruses which have positive-sense single-stranded RNA genomes.
Five families within this group—Caliciviridae, Dicistroviridae, Picornaviridae, Potyviridae and Sequiviridae share a number of common features:
conserved RNA-dependent RNA polymerasegenome has a protein attached to the 5' endno overlapping open reading frames within the genomeall the RNAs are translated into a polyprotein before processingThe evolution of these viruses may have preceded the separation of eukaryotes into the extant crown groups.
Taxonomy
The taxonomy of this group has been reorganised by the ICTV in 2011. The Caliciviridae and the Potyviridae have been removed from this order. The Bacillariornaviridae, the Labyrnaviridae, and the Sequiviridae have been reduced to genera.
References
Picornavirales Wikipedia(Text) CC BY-SA