rhizobacter rhizobacter rhizobacter is a bacterial genus from the class betaproteobacteria order burkholderiales. it is a plant pathogenic bacterium and, like a few other phytopathogenic bacteria, produces tumors in infected plants. it appears to have an extremely wide host range, producing tumors (galls) on the roots, stems and tubers of at least 46 species of plants from 24 families, which includes many economically important species such as tomato (solanum lycopersicum) and cabbage (brassica oleracea). rhizobacter scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: incertae sedis genus: rhizobactergoto and kuwata 1988 type species rhizobacter dauci species rhizobacter bergeniae wei et al. 2015 rhizobacter dauci corrig. goto and kuwata 1988 rhizobacter fulvus (yoon et al. 2007) stackebrandt et al. 2009 rhizobacter gummiphilus imai et al. 2016 rhizobacter profundi jin et al. 2016