Query: NC_008380:4532969 Rhizobium leguminosarum bv. viciae 3841, complete genome Lineage: Rhizobium leguminosarum; Rhizobium; Rhizobiaceae; Rhizobiales; Proteobacteria; Bacteria General Information: This biovar nodulates legumes in the Tribe Viciae (Vicia, Pisum, Lathyrus, Lens). This strain is a spontaneous streptomycin-resistant mutant of strain 300. Nitrogen-fixing plant symbiont. This organism, like other Rhizobia, establishes a symbiotic relationship with a legume plant, providing nitrogen in exchange for a protected environment. The legume roots secrete flavonoids and isoflavonoids which the bacteria recognize and use to turn on genes involved in root nodulation. Many of the root nodulation genes are involved in synthesis and secretion of a nodule inducing signal, a lipochito-oligosaccharide molecule, which the plant recognizes, triggering nodule formation. The bacterium is endocytosed and exists inside a membrane bound organelle, the symbiosome, and fixes nitrogen for the plant cell while the host cell provides carbon compounds for the bacterium to grow on. The nitrogen fixation is important as it obviates the need for expensive and environmentally damaging fertilizer use.
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General Information: Soil bacterium that can cause opportunistic infections. Ochrobactrum anthropi is an opportunistic human pathogen usually causing infection in association with indwelling medical devices, such as catheters and drainage tubes. This organism and related species have also been isolated from soil, activated sludge, and plants. Ochrobactrum anthropi is a Gram-negative, anaerobic, motile bacterium. A common soil bacteria, it was originally considered as an opportunistic pathogen, causing infections in immunocompromised patients, patients with indwelling catheters or peritoneal dialysis but it is now emerging as a more and more important nosocomial pathogen. The first case of human infection was described in 1980. It has been isolated from blood, the urogenital tract, respiratory tract and eyes, and it can be part of the normal intestinal flora. It is resistant to many antibiotics, especially the beta-lactams.