Amari, K., A. Lerich, C. Schmitt-Keichinger, V. V. Dolja and C. Ritzenthaler (2011). Tubule-guided cell-to-cell movement of a plant virus requires class XI myosin motors. PLoS Pathog 7: e1002327. [PubMed]
Marc Fuchs*
Secoviridae Study Group Chair
School of Integrative Plant Science
Cornell University
New York State Agricultural Experiment Station
Geneva, NY 14456, USA
E-mail: mf13@cornell.edu
Nepoviruses are the only known members of the family that encode a single large capsid protein (CP) of 52–60 kDa (Fuchs et al., 2017). These viruses are transmitted by nematode vectors and through pollen.
Fabaviruses have bipartite genomes encapsidated by two capsid proteins (CP) and are transmitted by aphids.
See discussion under family description.
Comoviruses have bipartite genomes encapsidated by two capsid proteins (CP); these viruses are transmitted by beetles.
The comovirus capsid is made of two types of polypeptides (large CP: 40–45 kDa and small CP: 21–27 kDa). The small CP suppresses RNA silencing and surface-exposed amino acids are required for this function.
Waikaviruses have a monopartite genome encapsidated by three capsid proteins; these viruses are transmitted by aphids or leafhoppers.
See discussion under family description.
Sequiviruses have a monopartite genome and three capsid proteins (CP) in their virions; sequiviruses are transmitted by aphids in the presence of a helper virus.
Virions contain three CPs of about 32–34, 22–26 and 22–24 kDa.
Similar to cheraviruses, torradoviruses have a bipartite genome with two open reading frames in RNA2 and three capsid proteins.
See discussion under family description.
