rothia (bacterium) rothia (bacterium) rothia is a gram-positive, aerobic, rod-shaped and non-motile bacterial genus from the family micrococcaceae. rothia bacteria can cause disease in humans and immunosuppressed humans. rothia rothia dentocariosa, gram stain. scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: micrococcaceae genus: rothiageorg and brown 1967 (approved lists 1980) type species rothia dentocariosacorrig. (onishi 1949) georg and brown 1967 (approved lists 1980) species r. aeria li et al. 2004 r. aerolata kämpfer et al. 2016 r. amarae fan et al. 2002 "r. arfidiae" ko et al. 2009 r. dentocariosa corrig. (onishi 1949) georg and brown 1967 (approved lists 1980) r. endophytica xiong et al. 2013 r. halotolerans (tang et al. 2009) nouioui et al. 2018 r. koreensis (park et al. 2010) nouioui et al. 2018 r. kristinae (kloos et al. 1974) nouioui et al. 2018 "r. marina" liu et al. 2013 r. mucilaginosa (bergan and kocur 1982) collins et al. 2000 r. nasimurium collins et al. 2000 "r. nasisuis" schlattmann et al. 2018 r. terrae chou et al. 2008 synonyms stomatococcus bergan and kocur 1982 rothia is prevalent in human saliva and it produces enterobactin. rothia is also prevalent in the human gut and can cause the emergence of gastric atrophy and intestinal metaplasia.