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Results of comparative genomics on the two main pathogenicity determinant regions of Clavibacter michiganensis sensu stricto NCPPB 382 (i.e., chp and tomA) against the nonpathogenic tomato-associated strains, as well as the type strains of five species that are pathogenic on other plants. While only a fraction (<10%) of the clusters were detected in the nonpathogenic strains (A), variations were observed in the patterns of the genes (B).
