microbacterium populi microbacterium populi microbacterium populi is a gram-positive, non-spore-formin and aerobic bacterium from the genus microbacterium which has been isolated from the bark of populus × euramericana. microbacterium populi scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: microbacteriaceae genus: microbacterium species: m. populi binomial name microbacterium populili et al. 2015 type strain cfcc 11275kctc 2915210-107-81c-43d-34107_1_2nhi3_6