All kinds of microbes, including Aspergillus can contribute actively to geological phenomena, and central to many such geomicrobial processes are transformations of metals and minerals.
Microbes have a variety of properties that can effect changes in metal speciation, toxicity and mobility, as well as mineral formation or mineral dissolution or deterioration. Such mechanisms are important components of natural biogeochemical cycles for metals as well as associated elements in biomass, soil, rocks and minerals, e.g. sulfur and phosphorus, and metalloids, actinides and metal radionuclides.
Apart from being important in natural biosphere processes, metal and mineral transformations can have beneficial or detrimental consequences in a human context. Bioremediation is the application of biological systems to the clean-up of organic and inorganic pollution, with bacteria and fungi being the most important organisms for reclamation, immobilization or detoxification of metallic and radionuclide pollutants.
|Oxalate production by fungi: significance in geomycology, biodeterioration and bioremediation|
|G. M. Gadd et. al (2014)|
|Fungi as Geologic Agents|
|Katja Sterflinger (2010)|
|Biohydrometallurgy for Nonsulfidic Minerals: A Review|
|Nalini Jain and D. K. Sharma (2010)|
|Geomicrobiology of Eukaryotic Microorganisms|
|Geoffrey M. Gadd and John A. Raven (2010)|
|Eukaryote-Dominated Biofilms and Their Significance in Acidic Environments|
|Sandra S. Brake & Stephen T. Hasiotis (2010)|
|Bacterial and fungal geomicrobiology: a problem with communities?|
|G. M. GADD (2008)|
|Geoffrey M. Gadd (2007)|
|Dana Elhottová, Václav Krisˇtu˚fek, Jan Frouz, Alena Nováková and Alica Chronˇáková||Screening for microbial markers in Miocene sediment exposed during open-cast brown coal mining|
|STERFLINGER K||Fungi as Geologic Agents|
|Sand W & Bock E||Biodeterioration of mineral materials by microorganisms—biogenic sulfuric and nitric acid corrosion of concrete and natural stone|
|Hallegraeff G1, Coman F, Davies C, Hayashi A, McLeod D, Slotwinski A, Whittock L, Richardson AJ.||Australian Dust Storm Associated with Extensive Aspergillus sydowii Fungal "Bloom" in Coastal Waters.|
|Isabella Grishkan, Eviatar Nevo, Solomon P Wasser||Micromycetes from the Saline Arubotaim Cave: Mount Sedom, The Dead Sea Southwestern Shore, Israel|