Abstract Several geoactive fungi were investigated for their biocorrosion impact on metallic copper, to further understanding of the potential roles that fungi may have in the biotransformation of such substrate, and the mechanisms involved. Copper metal showed little toxicity and test fungi were able to grow in direct or indirect contact with copper and to colonize copper sheet. A. niger was able to biodeteriorate copper metal through proton- and ligand-mediated dissolution mechanisms, leading to significant mass loss and surface etching. The formation of a secondary copper oxalate (moolooite) biomineral crust together with cuprite deposition lead to alteration of surface topography and visual appearance, highlighting the significance of oxalate excretion in effecting fungal metal biotransformations. The metal transforming influence of fungal colonization may have some implications for biodeterioration, protection and preservation of cultural relics and artefacts as well as certain components of the built environment.

中文翻译：

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黑曲霉对铜金属的生物腐蚀

摘要 研究了几种地质活性真菌对金属铜的生物腐蚀影响，以进一步了解真菌在此类底物生物转化中的潜在作用及其机制。铜金属显示出很小的毒性，测试真菌能够在与铜直接或间接接触的情况下生长并在铜片上定植。A. niger 能够通过质子和配体介导的溶解机制使铜金属生物劣化，导致显着的质量损失和表面蚀刻。次生草酸铜（moolooite）生物矿物外壳的形成与赤铜矿沉积一起导致表面形貌和视觉外观的改变，突出了草酸盐排泄在影响真菌金属生物转化中的重要性。