pseudomonas nitroreducens pseudomonas nitroreducens pseudomonas nitroreducens is an aerobic, gram-negative soil bacterium first isolated from oil brine in japan. it is able to synthesise polyhydroxybutyrate homopolymer (a polyester) from medium chain length fatty acids. based on 16s rrna analysis, p. nitroreducens has been placed in the p. aeruginosa group. pseudomonas nitroreducens scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: pseudomonadaceae genus: pseudomonas species: p. nitroreducens binomial name pseudomonas nitroreducensiizuka and komagata 1964 type strain atcc 33634 ccug 12538 cip 106747 dsm 14399 iam 1439 jcm 2782 nbrc 12694 synonyms pseudomonas multiresinivorans mohn et al. 1999