Abstract

Strains of the bacterium Xylophilus ampelinus were collected from Europe and Hokkaido, Japan. Genomic fingerprints generated from 43 strains revealed four DNA types (A–D) using the combined results of Rep-, ERIC-, and Box-PCR. Genetic variation was found among the strains examined; strains collected from Europe belonged to DNA types A or B, and strains collected from Hokkaido belonged to DNA types C or D. However, strains belonging to each DNA type showed the same pathogenicity to grapevines (cultivar Kerner), and virulence was indistinguishable among these strains.

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