Pre_GI: SWBIT SVG BLASTN

Query: 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.

Subject: NC_014760:299392 Mycoplasma bovis PG45 chromosome, complete genome

Lineage: Mycoplasma bovis; Mycoplasma; Mycoplasmataceae; Mycoplasmatales; Tenericutes; Bacteria

General Information: This bacterium causes a contagious disease of cattle causing respiratory disease, mastitis, and arthritis. It is found worldwide and is inherently resistant to certain groups of antibiotics because it does not possess a cell wall. More recently, this species has become resistant to tetracycline, tilmicosin and spectinomycin which have been traditionally used in its control. The disease is spread between herds by the transfer of infected but seemingly healthy animals which shed viruses. It has also been introduced into healthy herds via frozen semen collected from an infected bull. The economic losses and negative impact on international trade from this disease have been considerable, and efforts are now underway to develop a vaccine.