Family: Botourmiaviridae

Genus: Ourmiavirus

Distinguishing features

The genome is tri-segmented, and each genomic RNA encodes a single protein, including an RNA-directed RNA polymerase (RdRP), a movement protein (MP) and a coat protein (CP). It is the only genus in the family Botourmiaviridae whose members infect plants (Rastgou et al., 2009).

Virion

See discussion under family description. 

Genome organization and replication

See discussion under family description. 

Biology

See discussion under family description. 

Species demarcation criteria

• Viruses of different species are not related serologically with respect to either the CP and the MP

• Different natural hosts

• Viruses of different species are less than 70% identical in CP aa sequence

• Viruses of different species are less than 90 % identical in RdRP aa sequence