Organo-mineralization in microbial mats under extreme conditions: linking field, laboratory and metagenomics studies

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The program here proposed will enable unprecedented, ground breaking and cross-disciplinary research on microbe-mineral interactions in microbial mats from the macroscopic to molecular levels. Microbial mats, the earth’s earliest biological communities, contribute to the formation of minerals and the preservation of organic matter. Metabolic activity within these mats, and nucleation processes on extracellular polymeric substances (EPS), induce and influence mineral formation (“organo-mineralization”). Previous observations of the interactions between microbes and minerals have not revealed the mechanisms of forming biogenic minerals in microbial mats. Understanding such interactions between the geo- and biosphere is crucial in environmental research.