Cupriavidus metallidurans strain CH34 is a nonspore-forming, Gram-negative bacterium which is adapted to survive several forms of heavy metal stress. Abstract. Ralstonia metallidurans, formerly known as Alcaligenes eutrophus and thereafter as Ralstonia eutropha, is a β-Proteobacterium colonizing industrial s. FEMS Microbiol Rev. Jun;27 Ralstonia metallidurans, a bacterium specifically adapted to toxic metals: towards a catalogue of.


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Cupriavidus metallidurans - Wikipedia

Ralstonia metallidurans and other metal resistant microbes are often found in sediments with a high content of heavy metals from diverse geographical locations. The reference strain, CH34, was first discovered infrom the sludge of a zinc decantation tank in Belgium that was polluted with high concentrations of several heavy metals.

Frank Reith and colleagues at Australian National University further isolated and grew the bacteria in the lab. The significance of this ralstonia metallidurans lays in that its genome contains plasmids that confer resistance to heavy metals, such as Zinc, Mercury, Ralstonia metallidurans, Cobalt, etc.

InKostman et al.

Ralstonia metallidurans

InShreve et al. Genome structure The genome of R.

Ralstonia metallidurans contains two large plasmids that encode for heavy metal resistance. These plasmids ralstonia metallidurans self-transmissible in homologous matings, but at low frequencies 3.

The entire genome is approximately kb in size. Together, these genetic elements contribute to the microbe's unique ability to survive in harsh environments.

The amplicons of R. DNA analysis showed ralstonia metallidurans each grain harbored as many as thirty species of bacteria that were distinct from the species in the surrounding soils. One species, almost certainly Ralstonia metallidurans, was present on all the grains. Subsequent experiments showed that the ubiquitous R.

Ralstonia metallidurans metallidurans CH34, formerly Ralstonia eutropha and Alcaligenes ralstonia metallidurans, is a gram-negative, non-spore forming bacillus that flourishes in millimolar concentrations of toxic heavy metals.


Although the ralstonia metallidurans strain, CH34, was first isolated in from the sludge of a zinc decantation ralstonia metallidurans in Belgium that was polluted with high concentrations of several heavy metals, it and other metal-resistant members of the genus Ralstonia are frequently found in sediments and soils with a high content of heavy metals from diverse geographical locations.

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