frigoribacterium frigoribacterium frigoribacterium is a gram-positive, non-spore-forming and motile genus of bacteria from the family of microbacteriaceae. frigoribacterium scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: microbacteriaceae genus: frigoribacteriumkämpfer et al. 2000 type species frigoribacterium faenikämpfer et al. 2000 species f. endophyticum wang et al. 2015 f. faeni kämpfer et al. 2000 f. salinisoli kong et al. 2016