nitratireductor basaltis nitratireductor basaltis nitratireductor basaltis is a gram-negative, oxidase- and catalase-positive bacteria from the genus of nitratireductor which was isolated from black sand from the soesoggak beach on the jeju island in south korea. nitratireductor basaltis scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: phyllobacteriaceae genus: nitratireductor species: n. basaltis binomial name nitratireductor basaltiskim et al. 2009 type strain j3, jcm 14935, kctc 22119