thauera humireducens thauera humireducens thauera humireducens is a gram-negative, non-spore-forming, humus-reducing, rod-shaped, bacterium from the genus of thauera which was isolated from a microbial fuel cell. thauera humireducens scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: rhodocyclales family: rhodocyclaceae genus: thauera species: t. humireducens binomial name thauera humireducensyang et al. 2013 type strain cctcc m 2011497, kacc 16524, sgz-1