PRO/PL> Little cherry & X diseases, stone fruit – USA: (northwest)

Other Plant Disease — United States
Phytoplasmas of the 16SrIII taxonomic group cause X diseases (such as Western-X, Canada-X; _Candidatus_ Phytoplasma pruni) of stone fruit (_Prunus_ spp). Symptoms and host specificity differ for members of the group. X-disease symptoms in cherry (also called cherry buckskin) vary with the cultivar and rootstock combinations but are often similar to viral little cherry disease.
Phytoplasmas can be spread by sap-sucking insects (mostly leaf hoppers), by grafting, with contaminated tools (such