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: This is the type strain of C. efficiens isolated by researchers of Ajinomoto food company from soils at Kanagawa, Japan in the late 1980's. The strain can grow and produce glutamate at temperatures above up to 45oC in contrast to C. glutamicum that is only efficient at around 30oC. This feature is very beneficial for industrial applications, because less heat removal is required in fermenters to be used for cultivation of these bacteria. Glutamate-producing bacterium. They may be found as members of the normal microflora of humans, where these bacteria find a suitable niche in virtually every anatomic site. This organism is a recently proposed new species of the genus capable of producing significant quantities of glutamic acid (glutamate), an important enhancer of taste in the food industry. It is currently used commercially to produce glutamate and other amino acids and compounds.