Abstract
Thirty-one isolates belonging to 14 nomenspecies of the Xanthomonas campestris group were grouped into nine serovars by the indirect hemagglutination test.
The isolates of Xanthomonas campestris and X. citri were serologically homogeneous. The isolates of the nomenspecies, X. cucurbitae, X. glycines, X. vesicatoria and X. vitians, exhibited serological differences within each nomenspecies. These results suggest that the indirect hemagglutination test may be a useful tool in the serological characterization of the pathovars in the Xanthomonas campestris group.
