The interplay between geology and biology has shaped the Earth during billions of years. Microbe-mineral interactions are prime examples of this interplay and underscore the importance of micro-organisms in making Earth a suitable environment for all forms of life. Mineral bioweathering is important for understanding a variety of environmental issues such as nutrient cycling, neutralization of acidic rain and long-term sequestration of atmospheric CO2. Soil microorganisms play an essential role in releasing the key nutrients from primary minerals that are required for their own and plants’ nutrition. The production of biogenic chelators is considered to be one of the most important weathering mechanisms by all soil microorganisms. The most common biogenic chelators produced by microorganisms are siderophores and organic acids.

The present project aims to apply an interdisciplinary approach to obtain an integrated understanding of microbe-mineral interactions in rock samples collected from underground laboratory and iron mine.

Materiál a metody: 

- Analyses of the micobial diversity in rock surfaces using next-generation sequencing.

- Extraction and analyses of biogenic chelators (siderophores and organic acids) using high performance liquid chromatography coupled to electrospray ionization mass spectrometry (HPLC-ESI-MS).

- Analyses of rock surface by Scanning electron microscopy (SEM).