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:11/13/2018)... ... November 13, 2018 , ... ... surgery alternatives with less invasive techniques, less discomfort and less recovery time. ... like receding, swollen and bleeding gums, and bad breath, this team is reaching ...
(Date:11/13/2018)... RALEIGH, N.C. (PRWEB) , ... ... ... Research Associates, among the nation’s largest Phase I-IV clinical trial site service ... the largest physician-owned orthopedic practices in North Carolina, and a leading provider ...
(Date:11/7/2018)... Calif. (PRWEB) , ... November 07, 2018 , ... ... LLC, the Southern California genomic sequencing business incubator, is pleased to announce ... , Gene Tox is working on providing solutions to help healthcare organizations including ...
Breaking Biology News(10 mins):
(Date:11/13/2018)... Sandy Springs, GA (PRWEB) , ... November 12, ... ... cosmetic dentist with state-of-the-art practices in Alpharetta and Sandy Springs, now welcomes ... clear aligners provide a discreet and comfortable alternative to traditional braces in the ...
(Date:11/13/2018)... ... November 13, 2018 , ... , Park Systems, world leader in Atomic Force ... growing demand for AFM technology in China, Park Systems has decided to provide direct ... in Beijing equipped with Park AFM. , The Grand Opening of the Park Beijing ...
(Date:11/11/2018)... ... November 09, 2018 , ... Triple W, an innovator of ... Innovation Awards Honoree for DFree ®, the first health tech wearable device ... time to go to the bathroom. The announcement was made during CES Unveiled New ...
(Date:11/9/2018)... ... November 08, 2018 , ... IC System, one of the ... to increasing recovery rates by creating a comprehensive contact strategy for each consumer. ... by NLP Logix, a Jacksonville, Florida-based AI solutions company, and leveraged the decades ...
Breaking Biology Technology:
Cached News: