Cristin-resultat-ID: 1042288
Sist endret: 1. november 2014, 20:52
Resultat
Vitenskapelig oversiktsartikkel/review
2011

From Rio Tinto to Mars: The terrestrial and extraterrestrial ecology of acidophiles

Bidragsytere:
  • Ricardo Amils
  • Elena Gonzalez-Toril
  • Ángeles Aguilera
  • Nicolás J.I. Rodríguez
  • David Fernández-Remolar
  • Felipe Gómez
  • mfl.

Tidsskrift

Advances in Applied Microbiology
ISSN 0065-2164
NVI-nivå 1

Om resultatet

Vitenskapelig oversiktsartikkel/review
Publiseringsår: 2011
Volum: 77
Sider: 41 - 70

Importkilder

Isi-ID: 000303215700002

Klassifisering

Vitenskapsdisipliner

Generell mikrobiologi

Beskrivelse Beskrivelse

Tittel

From Rio Tinto to Mars: The terrestrial and extraterrestrial ecology of acidophiles

Sammendrag

The recent geomicrobiological characterization of Río Tinto, Iberian Pyrite Belt (IPB), has proven the importance of the iron cycle, not only in generating the extreme conditions of the habitat (low pH, high concentration of toxic heavy metals) but also in maintaining the high level of microbial diversity, both prokaryotic and eukaryotic, detected in the water column and the sediments. The extreme conditions of the Tinto basin are not the product of industrial contamination but the consequence of the presence of an underground bioreactor that obtains its energy from the massive sulfide minerals of the IPB. To test this hypothesis, a drilling project was carried out to intersect ground waters that interact with the mineral ore in order to provide evidence of subsurface microbial activities and the potential resources to support these activities. The oxidants that drive the system appear to come from the rock matrix, contradicting conventional acid mine drainage models. These resources need only groundwater to launch microbial metabolism. There are several similarities between the vast deposits of sulfates and iron oxides on Mars and the main sulfide-containing iron bioleaching products found in the Tinto. Firstly, the short-lived methane detected both in Mars' atmosphere and in the sediments and subsurface of the IPB and secondly, the abundance of iron, common to both. The physicochemical properties of iron make it a source of energy, a shield against radiation and oxidative stress as well as a natural pH controller. These similarities have led to Río Tinto's status as a Mars terrestrial analogue.

Bidragsytere

Ricardo Amils

  • Tilknyttet:
    Forfatter
    ved Universidad Autónoma de Madrid
  • Tilknyttet:
    Forfatter
    ved Consejo Superior de Investigaciones Cientificas

Elena Gonzalez-Toril

  • Tilknyttet:
    Forfatter
    ved Consejo Superior de Investigaciones Cientificas

Ángeles Aguilera

  • Tilknyttet:
    Forfatter
    ved Consejo Superior de Investigaciones Cientificas

Nicolas Ingebrigtsen Rodriguez

Bidragsyterens navn vises på dette resultatet som Nicolás J.I. Rodríguez
  • Tilknyttet:
    Forfatter
    ved Consejo Superior de Investigaciones Cientificas

David Fernández-Remolar

  • Tilknyttet:
    Forfatter
    ved Consejo Superior de Investigaciones Cientificas
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