rhizorhabdus rhizorhabdus rhizorhabdus is a genus of bacteria. its name is derived from the latin rhiza, meaning root, and rhabdos, meaning rod. members of this genus, including rhizorhabdus wittichii and five other species with sequenced genomes, are associated with soil or plant roots. rhizorhabdus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: sphingomonadaceae genus: rhizorhabdusfrancis et al., 2014 type species rhizorhabdus argenteafrancis et al., 2014 species rhizorhabdus argentea francis et al. 2014 rhizorhabdus dicambivorans yao et al. 2016 rhizorhabdus histidinilytica (nigam et al. 2010) hördt et al. 2020 rhizorhabdus phycosphaerae kim et al. 2022 rhizorhabdus starnbergensis (chen et al. 2013) hördt et al. 2020 rhizorhabdus wittichii (yabuuchi et al. 2001) hördt et al. 2020