Grapevine leafroll-associated virus 4

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Symptomatology of Grapevine leafroll-associated virus 4 on Cabernet Sauvignon (left) and Shiraz (right) grapevines (click on image to enlarge it)
Author(s): Qi Wu et al.
Source: vol. 12, art. 818

Grapevine leafroll-associated virus 4 (GLRaV-4)

The virus is widely distributed and infects grapevine, causing leafroll symptoms. It is of quarantine concern in some countries. The virus has a positive-strand RNA genome with a size of around 14kb and six open-reading frames. GLRaV-4 stand apart from other Ampeloviruses in lacking the minor coat protein.

Synonyms:
Grapevine leafroll-associated virus 6
Grapevine leafroll-associated Carnelian virus