Query: NC_012560:2906459 Azotobacter vinelandii DJ, complete genome Lineage: Azotobacter vinelandii; Azotobacter; Pseudomonadaceae; Pseudomonadales; Proteobacteria; Bacteria General Information: This organism was first isolated from the soil in Vineland, New Jersey, although it is found worldwide. It is a large obligate aerobe that has one of the highest respiratory rates of any organism. Azotobacter vinelandii also produces a number of unusual nitrogenases which allow it to fix atmospheric nitrogen to ammonia, a compound it can then use as a nitrogen source. It protects the oxygen-sensitive nitrogenase enzymes through its high respiratory rate, which sequesters the nitrogenase complexes in an anoxic environment. This organism has a number of unusual characteristics. Under extreme environmental conditions, the cell will produce a cyst that is resistant to dessication and is surrounded by two capsular polysaccharide layers. This organism produces two industrially important polysaccharides, poly-beta-hydroxybutyrate (PHB) and alginate. PHB is a thermoplastic biopolymer, and alginate is used in the food industry. Alginate is also used by the pathogen Pseudomonas aeruginosa to infect the lungs of cystic fibrosis patients.
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General Information: Stenotrophomonas maltophilia R551-3 was isolated from the poplar Populus trichocarpa x deltoides cv. "Hoogvorst" and is the second most common endophytic bacteria in poplar. Endophytic bacteria have been shown to increase plant growth or health but providing growth factors or nutrients and in aiding the degradation of toxic compounds. This species is an uncommon but serious source of infection in patients with breathing tubes such as endotracheal or tracheostomy tubes, or with chronically indwelling urinary catheters. Although the organism can colonize the devices without causing an infection, under certain conditions it can cause pneumonia, urinary tract infections, or an infection of the blood. This organism can also cause infection in immunocompromised patients. It has resistance to many commonly used antibiotics and therefore is often difficult to eradicate. Most strains are resistant to co-trimoxazole.