corynebacterium efficiens corynebacterium efficiens corynebacterium efficiens is a thermotolerant, glutamic acid-producing (from dextrin) species of bacteria from soil and vegetables. its type strain is ys-314t (= aj 12310t = jcm 11189t = dsm 44549t). corynebacterium efficiens scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: mycobacteriales family: corynebacteriaceae genus: corynebacterium species: c. efficiens binomial name corynebacterium efficiensfudou et al. 2002