methylorubrum populi methylorubrum populi methylorubrum populi is an aerobic, pink-pigmented, facultatively methylotrophic, methane-utilizing bacterium isolated from poplar trees (populus deltoides, hence its name). its type strain is bj001t (=atcc baa-705t =ncimb 13946t). methylorubrum populi scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: methylobacteriaceae genus: methylorubrum binomial name methylorubrum populi(van aken et al. 2004) green and ardley 2018 synonyms methylobacterium populi van aken et al. 2004