Grapevine virus A
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symptomatology of grapevine virus A-associated Shiraz Disease. (a) primary bud necrosis shown on right, (b) restricted spring growth (front row), (c) partial lignification showing islands of green immature canes, (d) retention of crimson coloured leaves on canopy in winter (click on image to enlarge it)
Author(s): Qi Wu et al.
Source: vol. 12, art. 818
Author(s): Qi Wu et al.
Source: vol. 12, art. 818
Grapevine virus A (GVA)
The virus is common in vineyards around the world. It causes "Kober stem grooving" and other grapevine diseases. The Shiraz disease in South Australia is often (but not always) associated with this virus and can be also associated with a combination of GVA and other grapevine viruses like Grapevine leafroll-associated virus 3. Apart from grapevine, GVA can also infect some herbaceous plants. It can be transmitted through grafting, by mealybugs and mechanically. The virus has a positive-strand RNA genome with around 7,400 nucleotides and 5 open reading frames.
| Vernacular names | |
|---|---|
| • English: | Grapevine virus A (GVA) Kober stem grooving of grapevine Shiraz disease |
| • Français: | virus A de la vigne |
