azospirillum canadense azospirillum canadense azospirillum canadense is a nitrogen-fixing bacterium isolated from corn rhizospheres. its type strain is ds2t (=nccb 100108t =lmg 23617t). azospirillum canadense scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: azospirillaceae genus: azospirillum species: a. canadensemehnaz et al. 2007