Query: NC_010694:2565580 Erwinia tasmaniensis, complete genome
Lineage: Erwinia tasmaniensis; Erwinia; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria
General Information: Erwinia tasmaniensis Et1/99 (DSM 17950) was isolated from apple flowers in Tasmania, Australia. Erwinia tasmaniensis has been isolated from apple and pear flowers and bark. This organism is not pathogenic to plants and appears to be a common epiphyte, colonizing plant surfaces.
Subject: NC_006142:811469 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.