Medium/Medium: Long distance Medium: Associated with Corky Vitivirus: grapevine B virus 4 spread occurs via infected bark disease, young grapevine vine GBV propagation material and local decline (disease induced graft Associated with Corky bark disease dissemination occurs via incompatibility). Infects systemically; mechanical means or mealybug probably present in fruit and rachis . Unlisted (s14) vectors. Not seed transmitted; transmitted by grafting; transmitted by the mealybugs Pseudococcus longispinus and Ps. Viburni, both of which are present in WA. Vitivirus: grapevine virus D Medium/Low: Long distance Low: Unsubstantiated association 3 spread occurs via infected with Corky rugose wood , limited GVD propagation material and local reports of any other symptoms. Unlisted (s14) dissemination occurs via Infects systemically. There is mechanical means. No reports of potential for it to be associated with natural spread and it is unlikely to the vascular tissues in table grape be co-transported with a vector bunches. insect or to be transmitted from imported fruit to a suitable host plant.
Vitivirus: grapevine B virus GBV Associated with Corky bark disease Unlisted (s14) Medium/Medium: Long distance spread occurs via infected propagation material and local dissemination occurs via mechanical means or mealybug vectors. Not seed transmitted; transmitted by grafting; transmitted by the mealybugs Pseudococcus longispinus and Ps. Viburni, both of which are present in WA. Medium: Associated with Corky bark disease, young grapevine vine decline (disease induced graft incompatibility). Infects systemically; probably present in fruit and rachis . 4 Vitivirus: grapevine virus D GVD Unlisted (s14) Medium/Low: Long distance spread occurs via infected propagation material and local dissemination occurs via mechanical means. No reports of natural spread and it is unlikely to be co-transported with a vector insect or to be transmitted from imported fruit to a suitable host plant. Low: Unsubstantiated association with Corky rugose wood , limited reports of any other symptoms. Infects systemically. There is potential for it to be associated with the vascular tissues in table grape bunches. 3
WA%20Viticulture%20Industry%20Biosecurity%20Plan%20V1.docx