Investigating the Role of Gold Nanoparticle Shape and Size in Their Toxicities to Fungi

International Journal of Environmental Research and Public Health
Kangze LiuFurong Tian

Abstract

Gold nanoparticles (GNPs) are increasingly being used in a wide range of applications, and such they are being released in greater quantities into the environment. Consequently, the environmental effects of GNPs, especially toxicities to living organisms, have drawn great attention. However, their toxicological characteristics still remain unclear. Fungi, as the decomposers of the ecosystem, interact directly with the environment and critically control the overall health of the biosphere. Thus, their sensitivity to GNP toxicity is particularly important. The aim of this study was to evaluate the role of GNP shape and size in their toxicities to fungi, which could help reveal the ecotoxicity of GNPs. Aspergillus niger, Mucor hiemalis, and Penicillium chrysogenum were chosen for toxicity assessment, and spherical and star/flower-shaped GNPs ranging in size from 0.7 nm to large aggregates of 400 nm were synthesised. After exposure to GNPs and their corresponding reaction agents and incubation for 48 h, the survival rates of each kind of fungus were calculated and compared. The results indicated that fungal species was the major determinant of the variation of survival rates, whereby A. niger was the most sensitive and M. himalis w...Continue Reading

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Citations

Dec 18, 2019·International Journal of Molecular Sciences·Tobiloba SojinrinFurong Tian
Jun 13, 2018·International Journal of Environmental Research and Public Health·Hugh J ByrnePratap C Naha

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Methods Mentioned

BETA
surface plasmon resonance
Scanning Electron Microscopy
dynamic light scattering

Software Mentioned

GraphPad Prism
JMP

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