Rothia

Rothia spp. are Gram-positive, pleomorphic, non-motile, non-sporulating, facultative anaerobes. The Rothia genus currently consists of 11 valid species isolated from diverse sources ranging from mammalian hosts to natural and built environments. Rothia spp. are broadly recognized as commensal bacteria within the human oral cavity and respiratory tract, but some Rothia strains can also cause opportunistic infections such as endocarditis, pneumonia, and septicemia. Rothia spp. perform both respiration and mixed-acid fermentation and use simple and complex sugars as carbon sources.