pleomorphomonas oryzae pleomorphomonas oryzae pleomorphomonas oryzae is a nitrogen-fixing bacterium species from the genus of pleomorphomonas which has been isolated from the rice plant oryza sativa in japan. pleomorphomonas oryzae scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: pleomorphomonadaceae genus: pleomorphomonas species: p. oryzae binomial name pleomorphomonas oryzaexie and yokota 2005 type strain atcc baa-940, dsm 16300, f-7, iam 15079, jcm 21540, nbrc 102288 synonyms pleomonas oryzae