phenylobacterium conjunctum phenylobacterium conjunctum phenylobacterium conjunctum is a gram negative, rod-shaped and non-spore-forming bacterium from the genus of phenylobacterium which has been isolated from water biofilm from vancouver in canada. phenylobacterium conjunctum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: caulobacterales family: caulobacteraceae genus: phenylobacterium species: p. conjunctum binomial name phenylobacterium conjunctumabraham et al. 2008 type strain ccug 55074, fwc 21, lmg 24262