A community of the bacteria Candidatus Desulforudis audaxviator has been discovered kilometres beneath the surface of the Earth in. The bacterium Desulforudis audaxviator lives beneath a gold mine in South Africa, and scientists are studying it as a possible model for. 1. Candidatus Desulforudis audaxviator Candidatus Desulforudis audaxviator overview Kingdom: Bacteria Chromosome: 1 Genome ID:

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You must be logged in to post a comment. Scientists also believe there is plenty of radioactive material on Europa to support this kind of life without having to posit a larger ecosystem. Desulforudis audaxviator is a monotypic bacteriawhich lives in depths from 1. Personal tools Log in.

Deep-Earth Microbe from South Africa Appears in California

Peptococcaceae Sulphophiles Lithophiles Monotypic bacteria genera Candidatus taxa. Billions of years ago, some of the first bacteria on the planet may have thrived in similar conditions. But a follow-up study published Aug. Scientists suggest it could have made its way to the surface in the mine’s water, and hitched a ride around the world on currents of air.

Desulforudis audaxviator

The genome contains an unusual transposon and possesses many sites of insertion. Ammonia is thought to be at a high enough concentration to provide a sufficient source of nitrogen.

Few organisms are similar to Desulforudis audaxviator in that they are anaerobic chemolithoautotrophs. Learn What is Biomimicry? Approximately four micrometres in length, it has survived for millions of years on chemical food sources that derive from the radioactive decay of minerals in the surrounding rock.

If conditions become unfavorable for normal life, D. Douglas Main loves the weird and wonderful world of science, digging into amazing Planet Earth discoveries and wacky animal findings from marsupials mating themselves to death to zombie worms to tear-drinking butterflies for Live Science. Severe nutrient limitation is believed to result in cell doubling times ranging from s to s of years…this organism appeared to possess all of the metabolic capabilities necessary for an independent life-style…radiolytically generated chemical species as providing the energy and nutrients to the system, with formate and H 2 as possessing the greatest potential among candidate electron donors, and sulfate SO 4 2— reduction as the dominant electron-accepting process.


This may include taking up nutrients recycled from dead cells. The bacterium performs chemotaxis along chemical gradients, and takes up nutrients it needs. Or it could have traveled via underwater rivers, although this would have had to happen before the continents split apart, according to the publication.

Douglas Main, Douglas Main loves the weird and wonderful world of science, digging into amazing Planet Earth discoveries and wacky animal findings from marsupials mating themselves to death to zombie worms to tear-drinking butterflies for Live Science. Its complete intolerance of oxygen suggests long-term isolation.

The radiation allows for the production of sulphur compounds that these bacteria can use as a high-energy source of food. This page was last edited on 5 Octoberat Articles with ‘species’ microformats All articles with unsourced statements Articles with unsourced statements from March Taxonbars using multiple manual Wikidata items. Group Directory Member Directory.

Comments Cancel reply You must be logged in to post a comment. This resulforudis uses Akismet to reduce spam. The bacteria can then use the sulfate for dissimulatory sulfate reduction, returning the compound to sulfide. The hydrogen peroxide reacts with the environmental sulfide to desulforudid sulfate.

All three of these mines are located in the Witswatersrand basin, the same basin as the Mponeng gold mine. But how did it get so far away? It is the only bacterium found in water samples obtained 2. The universe might be teeming with organisms like Desulforudis. At MP, where biodensity is low, carbon is fixed from inorganic sources…. Watch Interactive Report Edit Summary.

Deep-Earth Microbe from South Africa Appears in California

By using this site, you agree to the Terms of Use and Privacy Policy. Electrons from the hydrogen left over from the splitting of water are used by the cell to reduce sulfate. In other words, they are able to use inorganic sources of energy instead of consuming organic molecules as food or using sunlightfix their own carbon rather than rely on plants to convert carbon dioxide to organic compoundsand use chemicals other than oxygen for respiration.


One landmark study from 15 years ago estimated that subseafloor sediments contain The hydrocarbons in that environment do not come from living organisms.

At the very least, these bacteria greatly expand our understanding of what is possible when it comes to habitable conditions for life throughout the cosmos. But perhaps they should have.

Recently, scientists have lowered their estimates of the number of microbes that they expect live deep underground. It may also have acquired genes from a species of archaea by horizontal gene transfer. It proves that life, when given a foothold, can find a way to survive in even the harshest and aucaxviator unlikely of places. Audaxvkator was the only organism found in desulfotudis area, leading some to label its home as an “ecosystem of one.

Previously, scientists have looked audaxviayor organisms that live along hydrothermal vents as analogues to what we might find on Europa, which is an ocean world covered in a layer of ice that is also suspected of having hydrothermal vents. Organism Candidatus Desulforudis Species. They are motile, sporulating, sulfate reducing chemoautotrophsand are categorized as thermophiles and obligate anaerobes. Similar bacteria have been found in other environments and locations.

A colony of Desulforudis audaxviator, discovered in a gold mine near Johannesburg, South Africa.