Query: NC_009620:1531000 Sinorhizobium medicae WSM419 plasmid pSMED01, complete sequence Lineage: Sinorhizobium medicae; Sinorhizobium; Rhizobiaceae; Rhizobiales; Proteobacteria; Bacteria General Information: Nitrogen-fixing soil bacterium. This species was isolated from Medicago truncatula, where it forms nitrogen-fixing root nodules. Effective nitrogen fixing, aerobic microsymbiont of a diverse range of annual Medicago (medic) species. Has saprophytic competence and acid tolerance properties. Isolated in 1981 from a nodule recovered from the roots of an annual medic (Medicago murex) growing south of Tempio in Sardinia.
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General Information: Herminiimonas arsenicoxydans was isolated from heavy metal contaminated sludge from an industrial water treatment plant. This organism has a number of mechanisms for metabolizing arsenic allowing it to effectively colonize arsenic-contaminated environments. A bacterium capable of oxidizing and reducing arsenic. This heterotrophic bacterium is capable of reducing and oxidizing arsenic with the objective of detoxification. Arsenic is both a product from natural sources and of human activities, and is widely distributed in the environment, essentially in 3 different oxidation states: As (-III) (arsine), As (+III) (arsenite) and As (+V) (arseniate). The ecology of this metalloid is strongly dependent on microbial transformations which affect the mobility and bioavailability as well as the toxicity of arsenic in the environment.