Botouliviruses have a mono-segmented genome and infect fungi. Some members of the genus have been identified in association with grapevine leaves affected by the oomycete Plasmopara viticola. Botouliviruses are phylogenetically distinct from other botourmiaviruses.
No true virions are associated with botouliviruses since their genomes have no capsid protein gene.
María A. Ayllón, Massimo Turina, Jiatao Xie, Luca Nerva, Shin-Yi Lee Marzano, Livia Donaire and Daohong Jiang
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:
Agranovsky, A. A. (2016). Closteroviruses: Molecular biology, evolution and interactions with cells. In Plant viruses: Evolution and management. Edited by R. K. Gaur, N. M. Petrov, B. Patil and M. I. Stoyanova. Singapore, Springer. 231-252.
Jarugula, S., S. Gowda, W. O. Dawson and R. A. Naidu (2018). Development of infectious cDNA clones of Grapevine leafroll-associated virus 3 and analyses of the 5' non-translated region for replication and virion formation. Virology 523: 89-99. [PubMed]
The full-length genome sequence of members of 56 species in the family Closteroviridae is available at https://www.ncbi.nlm.nih.gov/genomes/GenomesGroup.cgi?taxid=69973
Moshe Bar-Joseph
The S. Tolkowsky Laboratory
The Volcani Center
Bet Dagan 50250
Israel
E-mail: mbjoseph@gmail.com
Thierry Candresse
MR 1332 Biologie du Fruit et Pathologie
INRA
University of Bordeaux
CS20032 Villenave d’Ornon
33882 Bordeaux
France
E-mail: thierry.candresse@inra.fr
The genus comprises species whose members have virion particles of 1,500 to 1,700 nm in length, a positive-sense, single-stranded RNA genome of 16–16.9 kb, and no known insect vector.
See discussion under family description.
The genus comprises species whose members are transmitted by whiteflies. Virions are 650–900 nm long and have a bipartite genome, but potato yellow vein virus (PYVV) has a tripartite genome.
See discussion under family description.
The genus comprises species whose members have virions that are 1,400–2,000 nm long, a monopartite genome of 13.0–18.5 kb, and are transmitted by pseudococcid mealybugs and soft scale insects.
See discussion under family description.
