''Potyviridae'' is a family of

positive-strand RNA virus Positive-strand RNA viruses (+ssRNA viruses) are a group of related viruses that have positive-sense, single-stranded genomes made of ribonucleic acid. The positive-sense genome can act as messenger RNA (mRNA) and can be directly translated int ...

es that encompasses more than 30% of known

plant virus Plant viruses are viruses that affect plants. Like all other viruses, plant viruses are obligate intracellular parasites that do not have the molecular machinery to replicate without a host. Plant viruses can be pathogenic to higher plants. ...

es, many of which are of great agricultural significance. The family has 12 genera and 235 species, three of which are unassigned to a genus.

Structure

Potyvirid virions are nonenveloped,

flexuous {{Short pages monitor