X-Disease
Candidatus Phytoplasma pruni
36 host plants
Last updated
Data Coverage 3 of 6 dimensions
Leaves show mottling and ringspot patterns on stone fruits while fruit becomes small and unmarketable. This virus spreads by leafhoppers and root grafting between adjacent trees. Use certified virus-free stock and control leafhopper populations.
Remember the grower mantra, "When in doubt, cut it out." Aggressive scouting, sampling, and tree removal is critical for slowing spread of little cherry diseases. Establish new orchards only with nursery stock tested and found to be free of all known viruses and phytoplasmas.
Quick Reference
Causal Agent
Candidatus Phytoplasma pruni
Host Plants
36
Management
Cultural Controls
- Remember the grower mantra, \"When in doubt, cut it out.\" Aggressive scouting, sampling, and tree removal is critical for slowing spread of little cherry diseases.
- Establish new orchards only with nursery stock tested and found to be free of all known viruses and phytoplasmas.
- Do not source material from commercial orchards for nursery propagation.
- Check the flavor of fruit on limbs or trees with pink fruit when the rest of the trees are turning red or mahogany.
- If poor flavor then flag the limb for tree removal.
- Apply insecticides for leafhopper management prior to tree removal and when mowing ground covers See PNW Insect Management Handbook for details.
Host Plants (36)
Prunus americana Wild Plum American (Red) Plum August Plum, Goose Plum Prunus armeniaca Apricot Prunus avium Sweet Cherry Prunus besseyi Sand Cherry, Western Sand Cherry Prunus blireiana Blireiana Plum Prunus caroliniana Carolina Cherrylaurel American Cherrylaurel Prunus cascade Prunus cascade Prunus cerasifera Cherry, Plum Prunus cistena Purpleleaf Sandcherry Redleaf Sandcherry Cistena Sandcherry Cistena Plum Prunus dream Prunus dream Prunus emarginata Bitter Cherry, Wild Cherry, Quinine Cherry Prunus first Prunus first Prunus fruticosa Steppe Cherry, European Dwarf Ground Cherry, Mongolian Cherry Prunus glandulosa Dwarf Flowering Almond Prunus ilicifolia Hollyleaf Cherry, Holly-leaved Cherry Prunus laurocerasus Cherry, Laurel Prunus lusitanica Portugal Laurel Prunus maackii Amur Chokecherry Amur Cherry, Manchurian Cherry Prunus mume Japanese Apricotc Japanese Flowering Apricot Japanese Flowering Plum Prunus newport Newport Flowering Plum Prunus okame Okame Flowering Cherry Prunus padus European Birdcherry Common Birdcherry Prunus prostrata Rock Cherry, Mountain Cherry Prunus sargentii Sargent Cherry, Sargent's Cherry Prunus serotina Black Cherry, Rum Cherry Prunus serrula Birchbark Cherry, Paperbark Cherry, Tibetan Cherry Prunus serrulata Japanese Flowering Cherry Prunus snow Prunus snow Prunus subcordata Klamath Plum, Sierra Plum, Pacific Plum Prunus subhirtella Higan Cherry Prunus subhirtella var. autumnalis Autumn Flowering Higan Cherry Prunus tai Prunus tai Prunus virginiana Prunus virginiana Prunus virginiana var. demissa Western Chokecherry Prunus virginiana var. virginiana Common Chokecherry, Eastern Chokecherry Prunus yedoensis Yoshino Cherry, Somei-yoshino Cherry, Tokyo Cherry