Capsidless virus: No virus particle could be identified, which means that this virus cannot be assigned to the Baltimore classification in the strict sense.
Molecular biology
VIRION
None reported. No true capsid.
GENOME
Segmented linear dsRNA genome, non-polyadenylated. Contains 7 to 11 segments coding for 7 to 11 proteins. Segments size range from 0.9 to 2.5 kb. Genome total size is 14 to 15 kp.
GENE EXPRESSION
ENZYMES
REPLICATION
The virus never buds out of its host. Transmission depends on cell division and sporogenesis (vertical transmission) and hyphal anastomosis.