bradyrhizobium iriomotense bradyrhizobium iriomotense bradyrhizobium iriomotense is a species of legume-root nodulating, endosymbiont nitrogen-fixing bacterium, first isolated from entada koshunensis. the type strain is ek05t (= nbrc 102520t = lmg 24129t). bradyrhizobium iriomotense scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: nitrobacteraceae genus: bradyrhizobium species: b. iriomotense binomial name bradyrhizobium iriomotenseislam et al. 2010