| Virion |
Non-enveloped, 25–30 nm in
diameter with icosahedral symmetry |
| Genome |
9.0–13.7 kb of
positive-sense, mono- or bipartite RNA |
| Replication |
In association with intracellular
membranes derived from the endoplasmic reticulum |
| Translation |
Directly from genomic RNA as large
polyproteins, which are cleaved by 3C-like proteinases |
| Host range |
Plants (mainly dicots), transmitted mainly
by insects or nematodes. Some seed transmission demonstrated |
| Taxonomy |
In the order
Picornavirales, family includes one subfamily
with three genera, five additional genera and more than 70
species |
