xanthomonas phaseoli xanthomonas phaseoli xanthomonas phaseoli, sometimes referred to as bean blight is a species of bacteria. xanthomonas phaseoli scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: xanthomonadales family: xanthomonadaceae genus: xanthomonas species: x. phaseoli binomial name xanthomonas phaseoli(smith 1897) gabriel et al. 1989