Query: NC_008390:2643653 Burkholderia cepacia AMMD chromosome 1, complete sequence Lineage: Burkholderia ambifaria; Burkholderia; Burkholderiaceae; Burkholderiales; Proteobacteria; Bacteria General Information: Isolated from the rhizosphere of healthy pea plants in Wisconsin, USA, in 1985. Pathogenic in cystic fibrosis patients. These bacteria present great versatility to adapt to diverse environments, and are capable of degrading pollutants in water and soil, and fixing atmospheric nitrogen. This species include strains isolated from cystic fibrosis patients as well as strains with potential use in biocontrol.
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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.