Metabolite Formation by Fungal Pathogens of Potatoes ( Solanum tuberosum L.) in the Presence of Bioprotective Agents

Aleksandra Steglińska (), Michael Sulyok, Regina Janas, Mieczysław Grzesik, Wiktoria Liszkowska, Dorota Kręgiel and Beata Gutarowska
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Aleksandra Steglińska: Department of Environmental Biotechnology, Lodz University of Technology, Wólczańska 171/173, 90-950 Łódź, Poland
Michael Sulyok: Department of Agrobiotechnology (IFA-Tulln), Institute of Bioanalytics and Agro-Metabolomics, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Strasse 20, 3430 Tulln, Austria
Regina Janas: The National Institute of Horticultural Research, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland
Mieczysław Grzesik: The National Institute of Horticultural Research, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland
Wiktoria Liszkowska: Department of Environmental Biotechnology, Lodz University of Technology, Wólczańska 171/173, 90-950 Łódź, Poland
Dorota Kręgiel: Department of Environmental Biotechnology, Lodz University of Technology, Wólczańska 171/173, 90-950 Łódź, Poland
Beata Gutarowska: Department of Environmental Biotechnology, Lodz University of Technology, Wólczańska 171/173, 90-950 Łódź, Poland

IJERPH, 2023, vol. 20, issue 6, 1-21

Abstract: The potato is a crop of global importance for the food industry. This is why effective protection against pathogens is so important. Fungi as potato pathogens are responsible for plant diseases and a significant reduction in yields, as well as for the formation of mycotoxins. This study focuses on the effect of three natural biocides, yeast Metschnikowia pulcherrima , lactic acid bacteria Lactiplantibacillus plantarum , and aqueous garlic extract, on the improvement of the physiology of planted potato tubers and the reduction in mycotoxin formation. The secondary metabolites produced by the fungal pathogens of genera Fusarium, Alternaria, Colletotrichum, Rhizoctonia , and Phoma in the presence of these biocontrol agents were compared to profiles obtained from contaminated potatoes. Analysis of liquid chromatography coupled with tandem mass spectrometry data showed the presence of 68 secondary metabolites, including the mycotoxins: alternariol, alternariol methyl ether, altertoxin-I, aurofusarin, beauvericin, diacetoxyscirpenol, enniatin B, and sterigmatocystin. The studies showed that the applied biocontrol agents had a positive effect on the physiological parameters of potatoes (including root growth, stem growth, gas exchange, and chlorophyll content index) and on the reduction in the production of mycotoxins and other secondary metabolites by Fusarium , Alternaria , and Phoma .

Keywords: biocontrol; lactic acid bacteria; garlic extract; Metschnikowia yeasts; potato physiology; mycotoxins; phytotoxins (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2023
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