variovorax boronicumulans variovorax boronicumulans variovorax boronicumulans is a gram-negative, catalase- and oxidase-positive, non-spore-forming, rod-shaped, motile bacterium from the genus variovorax. colonies of v. boronicumulans are yellow in color. variovorax boronicumulans scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: comamonadaceae genus: variovorax species: v. boronicumulans binomial name variovorax boronicumulansmiwa et al. 2008 type strain bam-48 (=nbrc 103145 =kctc 22010)