Bacteria nickel-resistant

Mengoni, A., Barzanti, R., Gonnelli, C., Gabbrielli, R., and Bazzicalupo, M. (2001). Characterization of nickel-resistant bacteria isolated from seipentine soil. Environ. Microbiol. 3, 691-698. 

Hydrogen sulfide promoted corrosion can be a serious problem (150) the best solution is prevention. Corrosion problems can be minimized by choice of the proper grades of steel or corrosion resistant alloys, usually containing chromium or nickel (150, 151) and avoiding generation of H S by sulfate reducing bacteria in situations where H S is not initially present. Cathodic protection of casing is often effective for wells less than 10,000 feet deep (150). 

Wildung, R. E., Garland, T. R., and Drucker, H. Complexation of nickel by metal-resistant soil bacteria and fungi, p. 153. "Agronomy Abstracts, ASA, SSSA, and CSSA Annual Meetings."... 

Other acid resistance mechanisms include urease, a nickel-containing oligomeric enzyme that catalyzes the hydrolysis of urea to two molecules of ammonia and one molecule of carbon dioxide (Mobley et al. 1995). The enzyme has maximal activity at pH 7 but loses activity at more extreme acidic pHs, being essentially inactive at pH 4.3. Ureases have been mostly associated with pathogens with the most studied system encoded by the highly urolytic bacteria Helicobacter pylori (Bartnik... 

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