burkholderia diffusa burkholderia diffusa burkholderia diffusa is a gram-negative, aerobic, non-spore-forming bacterium from the genus of burkholderia and the family of burkholderiaceae which belongs to the burkholderia cepacia complex. burkholderia diffusa scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: burkholderiaceae genus: burkholderia species: b. diffusa binomial name burkholderia diffusavanlaere et al. 2008 type strain au1075, ccug 54558, lmg 24065