Biotransformation of copper oxide nanoparticles by the pathogenic fungus Botrytis cinerea

Kovačec, Eva; Regvar, Marjana; Elteren, Johannes T. van; Arčon, Iztok; Papp, Tamás; Makovec, Darko; Vogel‐Mikuš, Katarina

doi:10.1016/j.chemosphere.2017.04.022

Cited by 35 publications

(14 citation statements)

References 36 publications

(1 reference statement)

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“…During the experiment, a decolorized halo around the mycelia of C. puteana was observed after 4 d to 5 d, which could have indicated that compounds were released by the fungi that detoxified the growth media. This was similar to the results reported by Kovačec et al (2017).…”

Section: Resultssupporting

confidence: 93%

Activity of spent coffee ground cinnamates against wood-decaying fungi in vitro

Barbero-López

Ochoa-Retamero

López-Gómez

et al. 2018

BioRes

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Fungi and microbes can remarkably degrade the appearance and durability of organic materials, such as wood. The inhibitory effects of natural phenolics may offer more sustainable alternatives to preserve wood than the toxic biocides that are currently used. Although pure caffeine has been proven to have antibacterial properties, the applicability of spent coffee in wood preservation has not been determined. This work conducted in vitro tests with three brown rot and one white rot fungi and demonstrated the potential of spent coffee-derived cinnamates, analyzed with high-performance liquid chromatography, as antimicrobial agents. Spent coffee at concentrations of 1% and above in the growing media caused significant growth suppression of all of the fungi. This was not only because of the caffeine, but also the other chemicals present in the residue extracts, which demonstrated that spent coffee could be used as a source of green chemicals in wood preservative formulations.

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Section: Resultssupporting

confidence: 93%

Activity of spent coffee ground cinnamates against wood-decaying fungi in vitro

Barbero-López

Ochoa-Retamero

López-Gómez

et al. 2018

BioRes

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“…For example, Ag NPs could significantly inhibit the growth of B. cinerea at concentration of 25 mg/L, and the inhibition effect was dose-dependent ( Derbalah et al, 2012 ). Additionally, Ag NPs could also suppress other fungi such as A. alternata, S. sclerotiorum, Macrophomina phaseolina, Rhizoctonia solani , and C. lunata ( Kovačec et al, 2017 ). ZnO NPs was another antifungal metal NP, it was reported that ZnO NPs could significantly decrease the growing activity of B. cinerea at concentrations greater than 3 mmol/L via affecting cellular functions especially deforming the fungal hyphae ( He et al, 2011 ).…”

Section: Discussionmentioning

confidence: 99%

Potential Applications and Antifungal Activities of Engineered Nanomaterials against Gray Mold Disease Agent Botrytis cinerea on Rose Petals

et al. 2017

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Nanoparticles (NPs) have great potential for use in the fields of biomedicine, building materials, and environmental protection because of their antibacterial properties. However, there are few reports regarding the antifungal activities of NPs on plants. In this study, we evaluated the antifungal roles of NPs against Botrytis cinerea, which is a notorious worldwide fungal pathogen. Three common carbon nanomaterials, multi-walled carbon nanotubes, fullerene, and reduced graphene oxide, and three commercial metal oxidant NPs, copper oxide (CuO) NPs, ferric oxide (Fe2O3) NPs, and titanium oxides (TiO2) NPs, were independently added to water-agar plates at 50 and 200-mg/L concentrations. Detached rose petals were inoculated with spores of B. cinerea and co-cultured with each of the six nanomaterials. The sizes of the lesions on infected rose petals were measured at 72 h after inoculation, and the growth of fungi on the rose petals was observed by scanning electron microscopy. The six NPs inhibited the growth of B. cinerea, but different concentrations had different effects: 50 mg/L of fullerene and CuO NPs showed the strongest antifungal properties among the treatments, while 200 mg/L of CuO and Fe2O3 showed no significant antifungal activities. Thus, NPs may have antifungal activities that prevent B. cinerea infections in plants, and they could be used as antifungal agents during the growth and post-harvesting of roses and other flowers.

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“…The presence of extracellular polymeric substances in the waste water system can also increase the dissolution of CuO-NPs in aquatic environments probably due to their abundant functional groups and excellent metal-binding capacity (Miao et al, 2015). In the presence of Botrytis cinerea, a plant pathogenic fungi, the siderophores and organic acid secretion was reported to induce the dissolution and mobilization of Cu ions from the CuO-NPs (Kovacec et al, 2017). However, the presence of a layer of cells does not have significance influence on Co 3 O 4 -NPs dissolution in water (Papis et al, 2009).…”

Section: Chemical Transformationsmentioning

confidence: 99%