Research Note Phytoplasmas of a large number of GY-affected grapevines from several European countries and Israel were characterized using PCR-RFLP of a 16S rDNA region. Only phytoplasmas in the EY group and the stolbur group were found. The latter was the most wideley spread. VITIS - Journal of Grapevine Research, Vol. 36 No. 1 (1997): Vitis
