Sour cherry with shoot proliferation and dieback symptoms and sweet cherry showing leaf roll and yellowing of the
leaves were observed in orchards located in west and central parts of Poland. Results of phylogenetic and RFLP analysis
of the partial sequence of 16S rDNA and 16S-23S rDNA spacer region virtually digested with 16 restriction enzymes showed
the presence of ‘Candidatus Phytoplasma prunorum’ in sweet cherry and ‘Ca. P. asteris’ in sour cherry trees.