pseudomonas azotoformans pseudomonas azotoformans pseudomonas azotoformans is a gram-negative bacterium that infects cereal grains—especially rice. based on 16s rrna analysis, p. azotoformans has been placed in the p. fluorescens group. pseudomonas azotoformans scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: pseudomonadaceae genus: pseudomonas species: p. azotoformans binomial name pseudomonas azotoformansiizuka and komagata 1963 type strain ccug 12536 cip 106744 iam 1603 jcm 2777 nbrc 12693