azospira oryzae azospira oryzae azospira oryzae is a species of bacteria. it is a root bacteria, one of two species in the genus azospira along with a. restricta. azospira oryzae scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: rhodocyclales family: rhodocyclaceae genus: azospira species: a. oryzae binomial name azospira oryzaereinhold-hurek & hurek, 2000