thioreductor thioreductor thioreductor is a gram-negative, mesophilic, hydrogen-oxidizing, sulfur-reducing and motile genus of bacteria from the phylum campylobacterota with one known species (thioreductor micantisoli). thioreductor micantisoli has been isolated from hydrothermal sediments from the iheya north from the mid-okinawa trough in japan. thioreductor scientific classification domain: bacteria phylum: campylobacterota class: order: family: genus: thioreductornakagawa et al. 2005 type species thioreductor micantisoli species t. micantisoli