bosea thiooxidans bosea thiooxidans bosea thiooxidans is a gram-negative species of bacteria that oxidises thiosulfate, the type species of its genus. its type strain is bi-42. bosea thiooxidans scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: boseaceae genus: bosea species: b. thiooxidans binomial name bosea thiooxidansdas et al. 1996