Family: Alphaflexiviridae

Genus: Potexvirus

Distinguishing features

Potexviruses have relatively short virions (<700 nm) and their genomes have only five ORFs. Potexviruses infect herbaceous hosts and have no known vectors. 

Family: Alphaflexiviridae

Genus: Platypuvirus

Family: Alphaflexiviridae

Genus: Mandarivirus

Family: Alphaflexiviridae

Genus: Lolavirus

Family: Alphaflexiviridae

Genus: Botrexvirus

Family: Alphaflexiviridae

Genus: Allexivirus

Distinguishing features

Allexiviruses are distinguished by mite transmission and by the presence of a large conserved ORF4 or 5 after the position where the third, and smallest, of the triple gene block (TGB) proteins, TGB3, is found in the other plant-infecting members of the family. Whereas the start codon is missing for the TGB3 ORF in most (but not all) genus members, the coding capacity is conserved and the ORF may be translated through alternative mechanisms. 

Family: Alphaflexiviridae

Jan F. Kreuze, Anna Maria Vaira, Wulf Menzel, Thierry Candresse, Sergei K. Zavriev, John Hammond and Ki Hyun Ryu

Family: Botourmiaviridae

Genus: Rhizoulivirus

Distinguishing features

Rhizouliviruses have a mono-segmented genome, infect fungi, and are phylogenetically distinct from other botourmiaviruses.

Virion

No true virions are associated with rhizouliviruses since their genomes have no capsid protein gene.

Family: Botourmiaviridae

Genus: Penoulivirus

Citation: Botourmiaviridae

A summary of this ICTV Report chapter has been published as an ICTV Virus Taxonomy Profile article in the Journal of General Virology, and should be cited when referencing this online chapter as follows: