oharaeibacter diazotrophicus oharaeibacter diazotrophicus oharaeibacter diazotrophicus is a gram-negative, aerobic and motile bacteria from the genus oharaeibacter which has been isolated from the rhizosphere of rice plants. oharaeibacter diazotrophicus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: pleomorphomonadaceae genus: oharaeibacter species: o. diazotrophicus binomial name oharaeibacter diazotrophicuslv et al. 2017 type strain dsm 102969, nbrc 111955, sm30