Navigation Links
Otherworldly bacteria discovered two miles down

Researchers have discovered an isolated, self-sustaining, bacterial community living under extreme conditions almost two miles deep beneath the surface in a South African gold mine. It is the first microbial community demonstrated to be exclusively dependent on geologically produced sulfur and hydrogen and one of the few ecosystems found on Earth that does not depend on energy from the Sun in any way. The discovery, appearing in the October 20 issue of Science, raises the possibility that similar bacteria could live beneath the surface of other worlds, such as Mars or Jupiter's moon Europa.

"These bacteria are truly unique, in the purest sense of the word," said lead author Li-Hung Lin, now at National Taiwan University, who performed many of the analyses as a doctoral student at Princeton and as a postdoctoral researcher at the Carnegie Institution's Geophysical Laboratory.

As Lin explained: "We know how isolated the bacteria have been because our analyses show that the water they live in is very old and hasn't been diluted by surface water. In addition, we found that the hydrocarbons in the local environment did not come from living organisms, as is usual, and that the source of the hydrogen (H2) needed for their respiration comes from the decomposition of water (H2O) by radioactive decay of uranium, thorium, and potassium."

Humans and most other land-dwelling organisms ultimately get their energy from the Sun, with photosynthetic plants forming the base of the food web. But in dark places where sunlight doesn't reach, life has to depend on other energy sources. Other communities of "chemoautotrophs"--a word chained together from Greek roots meaning "chemical self-nourishment"--have been found in exotic places such as aquifers, petroleum reservoirs, and vents linked to deep-sea volcanoes. Yet these communities all depend at least in part on nutrients that can be traced back to photosynthetic plants or bacteria.

The intern
'"/>

Source:Carnegie Institution


Page: 1 2

Related biology news :

1. Anti-bacterial additive widespread in U.S. waterways
2. A bacterial genome reveals new targets to combat infectious disease
3. Discovery of key proteins shape could lead to improved bacterial pneumonia vaccine
4. Scientists discover that host cell lipids facilitate bacterial movement
5. Family trees of ancient bacteria reveal evolutionary moves
6. Drug-resistant bacteria on poultry products differ by brand
7. Programmable cells: Engineer turns bacteria into living computers
8. NASA links nanobacteria to kidney stones and other diseases
9. Substance protects resilient staph bacteria
10. Physiological effects of reduced gravity on bacteria
11. Anammox bacteria produce nitrogen gas in oceans snackbar
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Otherworldly bacteria discovered two miles down

(Date:4/23/2014)... in their mid-thirties and forties, face a devastating ... two decades. "Mutant" protein clusters, long blamed for ... the primary focus of therapies in development by ... Prof. Gerardo Lederkremer and Dr. Julia Leitman of ... Immunology, in collaboration with Prof. Ulrich Hartl of ...
(Date:4/23/2014)... Toronto Scarborough research shows that male black widow spiders ... a rare example of mate preference by male spiders. ... Emily MacLeod and Maydianne Andrade, a professor in UTSC,s ... studies and the wild that males overwhelmingly chose to ... black widows can tell whether a potential mate is ...
(Date:4/23/2014)... source of a unique rhythmic sound, recorded for decades ... the Antarctic minke whale ( Balaenoptera bonaerensis ). First ... who thought it sounded like a duck, the bio-duck ... Southern Ocean, but its source has remained a mystery, ... of researchers deployed acoustic tags on two Antarctic minke ...
Breaking Biology News(10 mins):On the defensive 2On the defensive 3Picky male black widow spiders prefer well-fed virgins 2Scientists identify source of mysterious sound in the Southern Ocean 2Scientists identify source of mysterious sound in the Southern Ocean 3
... have uncovered a dramatic new twist in the battle against ... itself immune to a key component of the only effective ... team of TB researchers at Leicester announced a new advance ... They isolated the molecular weapons of the bacterium and are ...
... spring arrives across the country, tourists returning to beaches will ... algae that make water unfit for swimming and pose risks ... realize is that the small streams running through their neighborhoods ... feeds the algae blooms. A new study published in ...
... RIDGE, Tenn., March 12, 2008 -- Noted green energy ... this years Global Venture Challenge, a business competition and ... Ridge National Laboratory. The focus of this years ... bioenergy, energy efficiency and power generation sectors. Sridhar, ...
Cached Biology News:Scientists discover how TB 'develops invincibility' against only available treatment 2From the backyard to the ocean: New study shows streams act as key nitrogen filters 2
(Date:1/14/2014)... 2014 iLab Solutions, the leader in core ... Director of Product Strategy. In this role, Michelle will work ... to guide in the development of iLab products. Her main ... possible benefit to the scientific community by offering the most ...
(Date:1/14/2014)...  RXi Pharmaceuticals Corporation (OTCQX: RXII), a biotechnology company ... addressing major unmet medical needs using RNA-targeted technologies, ... Allowance from the United States Patent and Trademark ... for the treatment of fibrosis. The patent covers ...
(Date:1/14/2014)... 14, 2014   Kinaxis ®, provider of RapidResponse ®, ... and operations planning ( S&OP ) service, is proud to ... which will be held at the Hilton San Diego Bayfront, ... customer Elisabeth Kaszas , Director of Supply Chain at ...
(Date:1/14/2014)... CA (PRWEB) January 14, 2014 Kerr Corporation, ... 10-minute video and additional how-to information about dual arch impressions ... Restorations with Dual Arch Impressions,” the blog entry serves up ... technique and houses a step-by-step demonstration by Dr. David Little ...
Breaking Biology Technology:iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... hair-like blood vessels in the back of our eyes, researchers ... those that bring blood to the heart respond to air ... otherwise healthy people exposed to high levels of air pollution ... of heart disease. Previous studies linked pollution to heart ...
... An international team of researchers has succeeded in creating ... for the first time, allowing them to examine the ... the University of Leeds, the US Department of Energy,s ... Facilities Council,s Rutherford Appleton Laboratory say the breakthrough will ...
... Mass. -- Researchers at Tufts University School of Engineering have ... and two variations, using E. coli as the ... 24, 2010, issue of Chemistry and Biology, offers ... new drugs that will combat the growing incidence of antibiotic ...
Cached Biology Technology:Photos of tiny blood vessels in the eye link air pollution to heart disease 2Scientists create highly ordered artificial spin ice using nanotechnology 2Scientists create highly ordered artificial spin ice using nanotechnology 3Erythromycin A produced in E. coli for first time 2
Procollagen type I C-terminal propeptide (human, PICP)...
... in Early Drug Development with Imaging Mass ... drug compound localization data in early drug ... mass spectrometry service maps unlabeled ... so you can localize drugs and metabolites ...
... LC Sciences provides a unique new ... DNA synthesis serving diverse needs in genomics, ... applications. OligoMix is a MIXTURE of a ... sequences delivered in a single microtube. OligoMix ...
... is an automated, high-resolution protein analysis ... ProteomeLab family of products, the PA ... automated protein characterization solutions including molecular ... carbohydrate profiling and mechanisms to study ...
Biology Products: