Query: NC_012803:1552122 Micrococcus luteus NCTC 2665, complete genome Lineage: Micrococcus luteus; Micrococcus; Micrococcaceae; Actinomycetales; Actinobacteria; Bacteria General Information: Temp: Mesophile; Habitat: Soil. Micrococcus luteus NCTC 2665 has potential in bioremediation due to its ability to sequester metals (i.e. gold and strontium), and it is being used for gold concentration from low-abundance ores. Micrococcus luteus was originally isolated by Alexander Fleming in 1929 as Micrococcus lysodeikticus. This organism can be found in many environments including soil, water, animals, and dairy products. Micrococcus luteus is able to survive in the environment for long periods and has been isolated from inclusions in amber.
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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.