phyllobacterium brassicacearum phyllobacterium brassicacearum phyllobacterium brassicacearum is a gram-negative, motile bacteria from the genus of phyllobacterium which was isolated from rhizoplane of the plant brassica napus. phyllobacterium brassicacearum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: phyllobacteriaceae genus: phyllobacterium species: p. brassicacearum binomial name phyllobacterium brassicacearummantelin et al. 2006 type strain bertrand 29-15, cfbp 5551, lmg 22836, stm 196