Fig. 19. Relationship between serotypes and capacity to hydrolyze starch among strains of X. axonopodis pv. dieffenbachiae. Strains from anthurium were in serotypes 1-6; strains from other aroids were mostly in serotypes 7-11. Nonpathogenic strains were often serotype 12, reacting only with a Xanthomonas-specific monoclonal antibody.

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