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Article

Bacteria Associated with Winter Wheat Degrade Fusarium Mycotoxins and Triazole Fungicide Residues

1
Department of Entomology, Phytopathology and Molecular Diagnostics, University of Warmia and Mazury in Olsztyn, Prowocheńskiego 17, 10-720 Olsztyn, Poland
2
Department of Plant Physiology, Genetics and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland
3
Department of Food Plant Chemistry and Processing, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn, 1 Cieszynski Sq., 10-726 Olsztyn, Poland
4
General Chemistry Unit, University of Life Sciences in Poznań, Wojska Polskiego 42, 60-624 Poznań, Poland
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(11), 1673; https://doi.org/10.3390/agronomy10111673
Received: 11 September 2020 / Revised: 20 October 2020 / Accepted: 26 October 2020 / Published: 29 October 2020
(This article belongs to the Special Issue Strategies for the Control of Fusarium Head Blight in Cereals)
Fusarium head blight (FHB) is the most dangerous spike disease of wheat, and triazole fungicides are generally recommended for FHB control. Bacteria isolates obtained from wheat grain were identified as members of the genus Sphingomonas based on 16S rDNA gene sequence analysis. The degradation of propiconazole and trichothecenes was analyzed by high-performance liquid chromatography. Two field experiments were conducted to determine the effectiveness of the biological treatment. All of the tested Sphingomonas isolates produced surfactin. Moreover, all strains were effective in degrading propiconazole and exhibited inhibitory effects on pathogens that cause FHB in wheat. Sphingomonas isolate S11 was selected for the field experiment because it inhibited the development of F. culmorum colonies in vitro by 48.80%, and degraded propiconazole in 15.13% after 48 h. The application of Sphingomonas S11 suspension during the growing season of winter wheat decreased the deoxynivalenol (DON) content of grain inoculated with F. culmorum more than 22-fold. Sphingomonas sp. strain S11 applied after fungicides also decreased the contamination of grain with fungi of the genus Fusarium and their mycotoxins. The analyzed bacteria can be potentially used to protect wheat against FHB pathogens, increase yields and improve grain quality by eliminating dangerous mycotoxins and propiconazole residues. View Full-Text
Keywords: propiconazole; Sphingomonas; fusarium head blight; surfactin; trichothecenes; deoxynivalenol propiconazole; Sphingomonas; fusarium head blight; surfactin; trichothecenes; deoxynivalenol
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MDPI and ACS Style

Wachowska, U.; Kucharska, K.; Pluskota, W.; Czaplicki, S.; Stuper-Szablewska, K. Bacteria Associated with Winter Wheat Degrade Fusarium Mycotoxins and Triazole Fungicide Residues. Agronomy 2020, 10, 1673. https://doi.org/10.3390/agronomy10111673

AMA Style

Wachowska U, Kucharska K, Pluskota W, Czaplicki S, Stuper-Szablewska K. Bacteria Associated with Winter Wheat Degrade Fusarium Mycotoxins and Triazole Fungicide Residues. Agronomy. 2020; 10(11):1673. https://doi.org/10.3390/agronomy10111673

Chicago/Turabian Style

Wachowska, Urszula, Katarzyna Kucharska, Wioletta Pluskota, Sylwester Czaplicki, and Kinga Stuper-Szablewska. 2020. "Bacteria Associated with Winter Wheat Degrade Fusarium Mycotoxins and Triazole Fungicide Residues" Agronomy 10, no. 11: 1673. https://doi.org/10.3390/agronomy10111673

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