Query: NC_007508:4593446 Xanthomonas campestris pv. vesicatoria str. 85-10, complete genome Lineage: Xanthomonas euvesicatoria; Xanthomonas; Xanthomonadaceae; Xanthomonadales; Proteobacteria; Bacteria General Information: Typically characterized as environmental organisms and are found in soil and water, as well as plant tissues. Plant pathogen. This organism can be divided into three strains, pepper race 1 which causes disease in all peppers, pepper race 2 which causes a limited disease in peppers that have a specific resistance gene, and a tomato strain which causes a limited disease in all peppers, Xanthomonas campestris pv. vesicatoria strain 85-10 is a pepper race 2 strain.
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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.