Inhibition effect of selected inorganic metal ions on the mycelial growth of Cryphonectria parasitica
Katarina Adamcikova 1, A-D,F  
,   Zuzana Jánošíková 1, C,E,   Jozef Pažitný 1, C,E
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Department of Plant Pathology and Mycology, Institute of Forest Ecology SAS, Slovak Republic
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Katarina Adamcikova   

Department of Plant Pathology and Mycology, Institute of Forest Ecology SAS, Akademická 2, 949 01, Nitra, Slovak Republic
Submission date: 2020-05-25
Acceptance date: 2020-09-03
Online publication date: 2020-11-10
Journal of Plant Protection Research 2020;60(4):399–405
In the current study the antifungal activity of inorganic reagents was tested against Cryphonectria parasitica in vitro in a mycelial growth inhibition test. Three reagents, each consisting of chloride silver (AgCl) in combination with (1) aluminum oxide − Al2O3, (2) zinc oxide − ZnO, and (3) Al2O3 and titanium dioxide – TiO2, were tested. Significant differences of the tested reagents on the growth of C. parasitica were recorded. The study demonstrated that silver in mixture with ZnO had an antifungal effect and significantly reduced the mycelial growth of C. parasitica in vitro. The mixture of AgCl with the other two combinations of inorganic metal oxides had no inhibition effect on the growth of the pathogen. It was confirmed that ZnO (applied in a single compound test) is responsible for inhibition of C. parasitica mycelium growth. A preliminary in planta assay was performed but statistically significant differences were not recorded in the average increment of canker length.
The authors have declared that no conflict of interests exist.
This work was supported by the VEGA under Grant Number 2/0143/15 and reagents were supplied by Ansil, s.r.o., Nová Dubnica Slovakia.
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