derxia gummosa derxia gummosa derxia gummosa is a gram-negative, rod-shaped, nitrogen-fixing, obligate aerobe bacterium of the genus derxia. colonies of d. gummosa produce a tenacious gum. derxia gummosa scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: alcaligenaceae genus: derxia species: derxia gummosa binomial name derxia gummosajensen et al. 1960 type strain atcc 15994, ccug 51006, cect 841, atcc15994t, dsm 723, dsmz 723, iam 13946, jcm 20996, jensen ii, kctc 1818, lmg 3977, nbrc 102506, ncib 9064, ncimb 9064, nrrl b-14655, nrrl b-4319, wr-231, wr-234 synonyms derxia indica