Family: Caliciviridae

Genus: Bavovirus

Distinguishing features 

The strains in this genus form a distinct clade within the family Caliciviridae (Figure 4. Caliciviridae). 

Virion 

See discussion under family description. 

Family: Caliciviridae

Jan Vinjé, Mary K. Estes, Pedro Esteves, Kim Y. Green, Kazuhiko Katayama, Nick J. Knowles, Yvan L’Homme, Vito Martella, Harry Vennema and Peter A. White

Citation: Bromoviridae

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:

Jeremy R. Thompson​, Tomás Canto​, John P. Carr​, Vicente Pallás​ and Dana Šafářová​. 2025, ICTV Virus Taxonomy Profile: Bromoviridae 2025. Journal of General Virology 106: 002069

References: Bromoviridae

Resources: Bromoviridae

Sequence alignments and tree files:

Figure 4

Alignment (FASTA format) 

Treefile (Newick format)

Authors: Bromoviridae

Jeremy R. Thompson*
Bromoviridae Study Group Chair
231 Morrin Road
St Johns
Auckland 1072
Aotearoa New Zealand
E-mail: Jeremy.Thompson@mpi.govt.nz

Family: Bromoviridae

Genus: Oleavirus

Distinguishing features

A fourth RNA with no apparent messenger activity, and which is slightly smaller than the RNA3, is encapsidated (Martelli and Grieco 1997).

Family: Bromoviridae

Genus: Ilarvirus

Distinguishing features

Family: Bromoviridae

Genus: Cucumovirus

Distinguishing features

Cucumoviruses are transmitted in a non-persistent manner by over 80 species of aphids belonging to more than 30 genera. RNA2 is bicistronic producing a 2b protein associated with suppression of post-transcriptional gene silencing.

Family: Bromoviridae

Genus: Bromovirus

Distinguishing features

Beetle vectors are recorded for most bromoviruses but the efficiency of such transmission is low. A long-standing report of transmission by nematodes has yet to be confirmed.

Virion

Morphology

Virions are polyhedral, and all the same size, with a diameter of 27 nm.