Query: NC_009785:1895679 Streptococcus gordonii str. Challis substr. CH1, complete genome Lineage: Streptococcus gordonii; Streptococcus; Streptococcaceae; Lactobacillales; Firmicutes; Bacteria General Information: Normal human oral flora. Most streptococci are facultative anaerobes, and some are obligate anaerobes. Serologic grouping is based on antigenic differences in cell wall carbohydrates, in cell wall pili-associated protein, and in the polysaccharide capsule in group B streptococci. Streptococcus gordonii is a commensal member of the human oral flora. It initiates the formation of biofilms on tooth surfaces known as dental plaque, which is strongly associated with the development of dental cavities (caries) and gum disease. It is a frequent causative agent of bacterial endocarditis (inflammation of the membrane lining the heart) which often occurs as a result of oral trauma, allowing S. gordonii to invade the bloodstream and colonize the heart.
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General Information: This organism is the causal agent of citrus canker, a bacterial infection originating from southeast Asia which now occurs worldwide. Primarily a pathogen of plants in the Citrus genus, the disease is sometimes also found in other members of the Rutaceae. The bacterium survives in leaf, shoot and fruit lesions that develop during the spring, and which also cause secondary infections. During warm, wet weather in spring and early summer, the bacterium oozes out of overwintering lesions and infects new growth via the stomal pores or wounds. The bacterium may also survive for various periods of time in the soil or associated with other hosts.