Medium/Low: Host plants are Medium: Causes chlorotic Nepovirus C: cherry leaf roll virus 3 grown in WA including cherry ringspots, leaf patterns and/or yellow – CLRV and grapes. There are vein netting. Virus transmitted by Prohibited s12 (C1) suggestions of root grafting as a mechanical inoculation; transmitted – means of spread in cherry trees . by grafting; not transmitted by However natural spread seems contact between plants . limited in grapevines. Nepovirus A: grapevine fan leaf virus Medium/Low: Transmitted High: GFLV is one of the oldest 4 occasionally through seed, also virus diseases of grapevines. GFLV transmitted by a nematode vector Susceptibility varies between Prohibited s12 (C1) – (Xiphinema index not currently cultivars, from mild to serious – present in WA) and by grafting . symptoms. Fan leaf shape, mosaic mottling of leaves, malformed shoots and reduced bunch sizes. Medium/Low: Long distance High: SLRSV has been reported in Nepovirus C: strawberry latent ringspot virus 4 spread occurs via infected association with grapevine SLRSV propagation material and local degeneration in Europe . SLRSV is Prohibited s12 (C1) dissemination occurs via difficult to distinguish from GFLV, – nematode vector - and produces similar symptoms. Xiphinema diversicaudatum – which is not present in Australia.
Nepovirus C: cherry leaf roll virus CLRV Prohibited – s12 (C1) Medium/Low: Host plants are grown in WA – including cherry and grapes. There are suggestions of root grafting as a means of spread in cherry trees . However natural spread seems limited in grapevines. Medium: Causes chlorotic ringspots, leaf patterns and/or yellow vein netting. Virus transmitted by mechanical inoculation; transmitted by grafting; not transmitted by contact between plants . 3 Nepovirus A: grapevine fan leaf virus GFLV Prohibited – s12 (C1) Medium/Low: Transmitted occasionally through seed, also transmitted by a nematode vector (Xiphinema index – not currently present in WA) and by grafting . High: GFLV is one of the oldest virus diseases of grapevines. Susceptibility varies between cultivars, from mild to serious symptoms. Fan leaf shape, mosaic mottling of leaves, malformed shoots and reduced bunch sizes. 4 Nepovirus C: strawberry latent ringspot virus SLRSV Prohibited – s12 (C1) Medium/Low: Long distance spread occurs via infected propagation material and local dissemination occurs via nematode vector - Xiphinema diversicaudatum – which is not present in Australia. High: SLRSV has been reported in association with grapevine degeneration in Europe . SLRSV is difficult to distinguish from GFLV, and produces similar symptoms. 4