Cupriavidus metallidurans
| Cupriavidus metallidurans | ||||||||||||
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| Scientific name | ||||||||||||
| Cupriavidus metallidurans | ||||||||||||
| (Goris et al. 2001) Vandamme & Coenye 2004 |
Cupriavidus metallidurans is a bacteria - kind from the family of burkholderiaceae . Synonyms names are Ralstonia metallidurans and Wautersia metallidurans . The species epithet metallidurans indicates that this bacterium cansurvivehigh concentrations of heavy metals .
features
They are gram-negative , rod-shaped, unicellular bacteria that occur individually, in pairs, or in short chains. They have a diameter of 0.8 µm and a length of 1.2 to 2.2 µm. They move through peritrichal flagella . On a nutrient medium, they form round, smooth, flat, convex and transparent colonies approx. 0.5 mm in diameter within 24 hours of incubation at 30 ° C. In the air these bacteria multiply between 20 ° C and 37 ° C, but not at 4 ° C and 41 ° C.
Way of life
The reference strain CH34 was first isolated in 1974 in the wastewater of a zinc smelter in Belgium. The bacterium occurs naturally in sediments and in soils with a high heavy metal content and has also been found on gold nuggets .
use
The bacterium is of particular interest because it is able to produce metallic gold from an aqueous gold (III) chloride solution. The mechanisms involved have been developed by Reith et al. a. examined.
Web links
- The bacterium as a cash cow . Spiegel Online , October 13, 2009
Individual evidence
- ↑ P. Vandamme, T. Coeyne: Taxonomy of the genus Cupriavidus: a tale of lost and found . In: International Journal of Systematic and Evolutionary Microbiology . tape 54 , no. 6 , November 2004, pp. 2285-2289 , doi : 10.1099 / ijs.0.63247-0 .
- ↑ Mario Vaneechoutte, Peter K Merger, Thierry De Baere, Enevold Falsen, Gerda Verschraegen: Wautersia gen. Nov., A novel genus accommodating the phylogenetic lineage including Ralstonia eutropha and related species, and proposal of Ralstonia [Pseudomonas] syzygii (Roberts et al. 1990) comb. nov. In: International Journal of Systematic and Evolutionary Microbiology . tape 54 , no. 2 , March 2004, p. 317-327 , doi : 10.1099 / ijs.0.02754-0 .
- ↑ Entry in the Genome Portal
- ↑ Frank Reith, Stephen L. Rogers, DC McPhail, Daryl Webb: Biomineralization of Gold: Biofilms on Bacterioform Gold . In: Science . tape 313 , no. 5784 , July 14, 2006, p. 233-236 , doi : 10.1126 / science.1125878 .
- ↑ F. Reith, B. Etschmann, C. Grosse, H. Moors, MA Benotmane, P. Monsieurs, G. Grass, C. Doonan, S. Vogt, B. Lai, G. Martinez-Criado, GN George, DH Nies, M. Mergeay, A. Pring, G. Southam, J. Brugger: Mechanisms of gold biomineralization in the bacterium Cupriavidus metallidurans . In: Proceedings of the National Academy of Sciences . tape 106 , no. 42 , October 20, 2009, p. 17757 , doi : 10.1073 / pnas.0904583106 .