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Title:Biotransformation of copper oxide nanoparticles by the pathogenic fungus Botrytis cinerea
Authors:ID Kovačec, Eva (Author)
ID Regvar, Marjana (Author)
ID Elteren, Johannes Teun van (Author)
ID Arčon, Iztok (Author)
ID Papp, Tamás (Author)
ID Makovec, Darko (Author)
ID Vogel-Mikuš, Katarina (Author)
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Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Two plant pathogenic fungi, Botrytis cinerea and Alternaria alternata, isolated from crop plants, were exposed to Cu in ionic (Cu2þ), microparticulate (MP, CuO) or nanoparticulate (NP, Cu or CuO) form, in solid and liquid culturing media in order to test fungal response and toxic effects of the mentioned compounds for the potential use as fungicides. B. cinerea has shown pronounced growth and lower levels of lipid peroxidation compared to A. alternata. Its higher resistance/tolerance is attributed mainly to biotransformation of CuO and Cu NPs and CuO MPs into a blue compound at the fungal/culturing media interface, recognized by Cu K-edge EXAFS analysis as Cu-oxalate complex. The pronounced activity of catechol-type siderophores and organic acid secretion in B. cinerea induce leaching and mobilization of Cu ions from the particles and their further complexation with extracellularly secreted oxalic acid. The ability of pathogenic fungus to biotransform CuO MPs and NPs hampers their use as fungicides. However the results show that B. cinerea has a potential to be used in degradation of Cu(O) nanoparticles in environment, copper extraction and purification techniques.
Keywords:copper, metal oxide nanoparticles, detoxification mechanisms, metal pollution, Cu-oxalate
Year of publishing:2017
Number of pages:str. 178-185
Numbering:#Vol. #180, 180
PID:20.500.12556/RUNG-3218-fbaf7b17-4216-8e60-03a3-1096730d0ae4 New window
COBISS.SI-ID:4299087 New window
ISSN on article:0045-6535
DOI:10.1016/j.chemosphere.2017.04.022 New window
Publication date in RUNG:23.08.2017
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Record is a part of a journal

Shortened title:Chemosphere
Publisher:Pergamon Press.
Year of publishing:2017
COBISS.SI-ID:25213696 New window

Secondary language

Keywords:Botrytis cinerea