HOME >> BIOLOGY >> NEWS
The Midas Bug -- the bacterial alchemy of gold

Bacteria play an important role in the formation of gold nuggets in Australia according to new research published this month in the international journal, Science.

The paper highlights the findings of a Cooperative Research Centre for Landscape Environments and Mineral Exploration (CRC LEME) project by CSIRO researcher, Frank Reith.

Dr Reith's research has shown that bacteria play a significant role in the formation of secondary gold grains.

His study of gold grains from the Tomakin Park and Hit or Miss gold mines in southern New South Wales and northern Queensland, respectively, led to a series of discoveries, which showed that specific bacteria present on these gold grains precipitate gold from solution.

"The origin of secondary gold grains is a controversial topic that is widely debated within the scientific community," Dr Reith said.

"There are those who believe the grains are purely detrital, while others believe they form by chemical accretion.

"A third theory suggest that microbial processes are involved in gold grain formation which may be responsible for one of the largest gold deposits in the world, the Witwatersrand deposit in South Africa."

Applying molecular biology techniques, Dr Reith discovered a living biofilm on the surface of gold grains collected. DNA profiling of this biofilm identified 30 bacterial species with populations unique to the gold grains when compared to the surrounding soils.

One species was identified on all of the DNA-positive gold grains from both locations. DNA sequence analysis of this species identified it as the bacterium Ralstonia metallidurans.

"The next step was to see if we could observe gold precipitation in the presence of a culture of this bacteria," Dr Reith said.

"By placing a culture of the R. metallidurans in the presence of dissolved gold, which is highly toxic to microorgansims, I observed active gold pr
'"/>

Contact: Dr. Frank Reith
Frank.Reith@csiro.au
61-883-038-469
CSIRO Australia
1-Aug-2006


Page: 1 2

Related biology news :

1. A new plant-bacterial symbiotic mechanism promising
2. UCF professor finds bacterial pathogen may be key to understanding cancer development
3. Researchers discover acquired DNA key to certain bacterial infection
4. Hot on the TRAIL of controlling inflammation in bacterial meningitis
5. A new plant-bacterial symbiotic mechanism promising for crop applications
6. Researchers develop way to calculate speed of bacterial sex
7. Gallium: A new antibacterial agent?
8. New antibacterials being developed to tackle MRSA superbug
9. The pull of bacterial chromosome segregation
10. Green plants share bacterial toxin
11. ASU researchers test antibacterial effects of healing clays

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/2/2020)... ... July 01, 2020 , ... AltruBio ... findings of Neihulizumab, a biologic for the treatment of steroid-refractory acute graft-versus-host disease ... hemato-oncologist Dr. Paul J Martin of the Fred Hutchinson Cancer Research Center, this ...
(Date:7/1/2020)... SOMERSET, N.J. (PRWEB) , ... July 01, 2020 ... ... today announced that it had completed the purchase of Teva-Takeda Pharmaceuticals’ packaging facility ... with the company’s existing Japanese clinical supply facility located in Kakegawa, the new ...
(Date:6/28/2020)... ... June 25, 2020 , ... ... announced that it has entered into a multi-year contract with Merus N.V., ... their translational and clinical research strategy to discover and develop ground-breaking drugs. ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... SOMERSET, N.J (PRWEB) , ... July 29, 2020 ... ... editing company, and Catalent, the leading global provider of advanced delivery technologies, development, ... products, today announced that they have entered into a strategic partnership whereby Catalent ...
(Date:7/31/2020)... ... July 30, 2020 , ... ... sciences industry, today announced the release of its signature product called Beacon ... Liaisons (MSLs) and other field medical professionals. , Beacon helps MSLs ...
(Date:7/18/2020)... ... , ... “We are thrilled to deliver this new technology to the industry” ... kind on the market and we were pleased that the IFT jury recognized that.” ... ingredients, creating a natural way to extend the shelf life and improve the safety ...
(Date:7/10/2020)... LORTON, Va. (PRWEB) , ... July 08, 2020 ... ... laboratory testing services and products, announces a significant expansion of laboratory operations through ... robust collection for agencies implementing testing programs. , Bode-CARES provides ...
Breaking Biology Technology:
Cached News: