Query: NC_007498:357484 Pelobacter carbinolicus DSM 2380, complete genome
Lineage: Pelobacter carbinolicus; Pelobacter; Pelobacteraceae; Desulfuromonadales; Proteobacteria; Bacteria
General Information: Pelobacter carbinolicus DSM 2380 was isolated from mud in Venice, Italy. Iron- and sulfur-reducing bacterium. Pelobacter carbinolicus is commonly isolated from marine and freshwater sediments, and sewage sludge. This organism can make up a significant portion of the anaerobic microbial community in these environments. Pelobacter carbinolicus is also able to grow using iron and sulfur as terminal electron acceptors. This organism is closely related to the sulfur-reducing Desulfuromonas spp. and iron-reducing Geobacter spp..
Subject: NC_008380:4078670 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.