Velarivirus (genus)

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sweet cherry with symptoms of infection by Little cherry virus (click on image to enlarge it)
Author(s): H.J. Larsen
Source: IPM Images

Velarivirus (genus)

The members of this genus of plant viruses are similar to Grapevine leafroll-associated virus 7 (GLRaV-7), the type species. They have various hosts like grapevine, cherry or Cordyline, causing a variety of leaf and fruit symptoms.

Like other Closteroviridae, the particles are non-enveloped, flexuous and filamentous (typically 1500-1700 nm long) and exhibit cross banding. The RNA genome and molecular structure of the genus, e.g. that of the RNA-dependent RNA polymerase, shows some relationship to the genus Crinivirus and more distant relationships to the genera Closterovirus and Ampelovirus. However, Velariviruses have a monopartite genome, in contrast to the Criniviruses which have a bipartite genome.

The name of the genus refers to the cryptic and asymptomatic nature of infections by the type species. GLRaV-7 was first described from symptomless grapevine but can also cause leafroll symptoms. The name is derived from the latin word velum, a veil, which is also used in the forms velarium or velare.

The literature database currently contains 48 publications for Velarivirus (genus). Please note that literature records for genera may not be complete. See box above on left for queries from the literature database.

Currently, the following species have been entered into the system: