Query: NC_004129:957890 Pseudomonas fluorescens Pf-5, complete genome
Lineage: Pseudomonas protegens Pf-5; Pseudomonas; Pseudomonadaceae; Pseudomonadales; Proteobacteria; Bacteria
General Information: This strain can suppress the diseases caused by Rhizoctonia solani and Pythium ultimum which affect cotton plants. The production of a number of antibiotics (pyrrolnitrin, pyoluteorin, and 2,4-diacetylphloroglucinol) as well as the production of siderophores (which may affect the ability of competing organisms to obtain environmental iron) by this strain can inhibit phytopathogen growth such as the above-mentioned fungi. The genome of this organism contains a number of genes, estimated at 5.7 % of the chromosome, that encode proteins that are involved in secondary metabolism. A large number of repeat elements (REP) are also found in the genome in greater numbers than in related Pseudomonas spp.
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.