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:1/4/2019)... FORT WORTH, Texas (PRWEB) , ... January 02, ... ... 2019 catalog. This release is particularly noteworthy, as the life science tools and ... company’s history, it is offering a catalog. The catalog features not just part ...
(Date:12/25/2018)... ... December 24, 2018 , ... Researchers at ... discovered a new use for a long-standing computational concept known as “blacklisting,” which ... files and messages. Using blacklisting as a filter to single out genetic variations ...
(Date:12/19/2018)... (PRWEB) , ... December 19, 2018 , ... ... of a new study in Arthroscopy evaluating the use of novel ... cuff tears (RCTs). These tears represent a painful, disabling condition for which there ...
Breaking Biology News(10 mins):
(Date:1/4/2019)... ... January 02, 2019 , ... ... precancer and cancer cells in blood, has been named as a partner in ... biotech company developing cell therapies for cancer treatment, will use CellMax Life’s circulating ...
(Date:12/19/2018)... ... December 19, 2018 , ... ... first rate Stem Cell Training Course in Las Vegas. Training includes facial rejuvenation, ... procedures explode in popularity nationwide for aesthetics, having the training from expert, Board ...
(Date:12/18/2018)... ... December 18, 2018 , ... ... optimization firm for the life sciences industry, unveiled a completely redesigned website at ... a more user-friendly browsing experience for their valued clients and business partners. ...
(Date:12/13/2018)... Mass. (PRWEB) , ... December 11, 2018 , ... ... biosensor that doctors and nurses can use to quickly detect Clostridium difficile (C. ... be the heart of a handheld device that can be used onsite in ...
Breaking Biology Technology:
Cached News: