Query: NC_014323:3669704 Herbaspirillum seropedicae SmR1 chromosome, complete genome
Lineage: Herbaspirillum seropedicae; Herbaspirillum; Oxalobacteraceae; Burkholderiales; Proteobacteria; Bacteria
General Information: Root-associated nitrogen-fixing bacterium. Herbaspirillum seropedicae is an endophitic nitrogen-fixing beta-Proteobacteria found associated with important crops such as sugarcane, wheat, maize, rice and sorghum. It is non-phytopathogenic and produces interesting biotechnological products such as polybetaalkanoates and cyanophycin. Herbaspirillum seropedicae was isolated from the roots of rice plants, and is member of a group of free-living soil bacteria known to promote plant growth. The yields of rice and sorghum were significantly increased when grown in soil inoculated with Herbaspirillum seropedicae.
Subject: NC_006142:33268 Rickettsia typhi str. Wilmington, complete genome
Lineage: Rickettsia typhi; Rickettsia; Rickettsiaceae; Rickettsiales; Proteobacteria; Bacteria
General Information: This genus, like other Rickettsial organisms such as Neorickettsia and Anaplasma, is composed of obligate intracellular pathogens. The latter is composed of two organisms, Rickettsia prowazekii and Rickettsia typhi. The bacteria are transmitted via an insect, usually a tick, to a host organism, in this case humans, where they target endothelial cells and sometimes macrophages. They attach via an adhesin, rickettsial outer membrane protein A, and are internalized where they persist as cytoplasmically free organisms. Transovarial transmission (from mother to offspring) occurs in the invertebrate host. Rickettsia typhi causes murine typhus and is an obligate intracellular pathogen that infects both the flea vector and hosts such as human, rat, and mouse. In the flea vector, the bacterium penetrates the gut epithelial barrier and is found in the feces which become infective.