Notes on Family: Virgaviridae

rigid rods

Contents

Members of this Family
General Description
Morphology
Genome
Genera in the Family
All Known Sequences
Curated Sequences

General Description

This family was created in 2008 to include all the rod-shaped ssRNA+ plant viruses with with a 3'- t-RNA like structure and no polyA tail. Their replication proteins form a single family within the alpha-like supergroup. The name is from the Latin virga (= rod). The genus Benyvirus is the only other rod-shaped plant virus genus but this has a polyadenylated gene and the replication protein is only very distantly related to that of members of the Virgaviridae.

Morphology

Virions rod-shaped, not enveloped, usually straight, with distinct central canal and 20-23 nm in diameter. The distribution of particle lengths differs between the genera.

Genome

Linear, single stranded, positive sense RNA with a 3'- t-RNA like structure and no polyA tail . Depending on the genus there are either 1, 2 or 3 genomic RNAs packaged in separate particles.

Genera in the Family