Record details

    Microbial colonization of halite from the hyper-arid Atacama Desert studied by Raman spectroscopy
    Ascaso, Carmen
    Davila, Alfonso F.
    de los Rios, Asuncion
    Edwards, Howell G.M.
    Jehlička, Jan
    Jorge-Villar, Susana E.
    Valea, Sergio
    Vítek, Petr
    Wierchos, Jaciek
Publication type
    článek v periodiku
Source title - serial
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
    Roč. 368, č. 1922
Thesaurus term
    Atacama Desert
    Microbial colonization
Abstract (in english)
   Microbial life is very rare in soils of Atacama hyper-arid region, and autotrophic microorganisms are virtually absent. These endoevaporitic colonies are an example of life that has adapted to the extreme dryness by colonizing the interior of rocks that provide enhanced moisture conditions. Here, we present non-destructive Raman spectroscopical identification of these colonies and their organic remnants. Spectral signatures revealed the presence of UV-protective biomolecules as well as light-harvesting pigments pointing to photosynthetic activity. Compounds of biogenic origin identified within these rocks differed depending on the origins of specimens from particular areas in the desert, with differing environmental conditions.
    UK Praha, Přírodovědecká fakulta
Contributor code
    UK, PřF
Source format
Import date
    8. 8. 2012