Nanophase Fungal Steering of Iron Mineral Transformations for Oxidative Stress Removal and Iron Acquisition

Published: 11 May 2020| Version 2 | DOI: 10.17632/wtck8dgdfm.2
Contributor:
Guanghui Yu

Description

This study shows that biogenic ferrihydrite nanoparticles are extensively formed at the interface between an actively growing fungus and an iron-containing mineral, hematite. These biogenic nanoparticles formed through the fungus-hematite interactions can behave as mimetic catalysts, similar to nanozymes that imitate peroxidase which scavenges hydrogen peroxide for the mitigation of potential cytotoxicity. This work raises new questions about the roles of biogenic nanomaterials in the coevolution of the lithosphere and biosphere, and provides a step towards understanding the feedback pathways controlling the evolution of biogenic mineral formation.

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Data were obtained from the fungal-mineral cultivation experiments that were initiated when the liquid medium containing 0.1% (w/v) hematite was inoculated with T. guizhouense conidia and incubated in a shaking incubator (170 rpm) at 28°C. This dataset include the following contents: 1) Changes of mean particle size (<D>) and number (N) in media extracted from TEM images, 2) Enzyme-like activities of biogenic ferrihydrite nanoparticles, 3) Time-dependent changes in Fe L-edge XAS spectra, 4) Changes in H2O2 concentrations during fungal-mineral cultivation, 5) Changes in fungal biomass during growth in the absence or presence of hematite, and 6) Energy dispersive spectroscopy (EDS).