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Article

Naturally Occurring Fusarium Species and Mycotoxins in Oat Grains from Manitoba, Canada

1
Agriculture and Agri-Food Canada (AAFC), Morden Research and Development Centre, 101 Route 100, Morden, MB R6M 1Y5, Canada
2
Department of Plant Science, University of Manitoba, 66 Dafoe Road, Winnipeg, MB R3T 2N2, Canada
3
Agriculture and Agri-Food Canada (AAFC), Ottawa Research and Development Centre, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada
*
Author to whom correspondence should be addressed.
Toxins 2021, 13(9), 670; https://doi.org/10.3390/toxins13090670
Received: 30 August 2021 / Revised: 15 September 2021 / Accepted: 16 September 2021 / Published: 18 September 2021
(This article belongs to the Special Issue Selected Papers from the 15th European Fusarium Seminar)
Fusarium head blight (FHB) can lead to dramatic yield losses and mycotoxin contamination in small grain cereals in Canada. To assess the extent and severity of FHB in oat, samples collected from 168 commercial oat fields in the province of Manitoba, Canada, during 2016–2018 were analyzed for the occurrence of Fusarium head blight and associated mycotoxins. Through morphological and molecular analysis, F. poae was found to be the predominant Fusarium species affecting oat, followed by F. graminearum, F. sporotrichioides, F. avenaceum, and F. culmorum. Deoxynivalenol (DON) and nivalenol (NIV), type B trichothecenes, were the two most abundant Fusarium mycotoxins detected in oat. Beauvericin (BEA) was also frequently detected, though at lower concentrations. Close clustering of F. poae and NIV/BEA, F. graminearum and DON, and F. sporotrichioides and HT2/T2 (type A trichothecenes) was detected in the principal component analysis. Sampling location and crop rotation significantly impacted the concentrations of Fusarium mycotoxins in oat. A phylogenetic analysis of 95 F. poae strains from Manitoba was conducted using the concatenated nucleotide sequences of Tef-1α, Tri1, and Tri8 genes. The results indicated that all F. poae strains belong to a monophyletic lineage. Four subgroups of F. poae strains were identified; however, no correlations were observed between the grouping of F. poae strains and sample locations/crop rotations. View Full-Text
Keywords: Fusarium head blight; oats; mycotoxins; chemotypes; phylogenetic analysis Fusarium head blight; oats; mycotoxins; chemotypes; phylogenetic analysis
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MDPI and ACS Style

Islam, M.N.; Tabassum, M.; Banik, M.; Daayf, F.; Fernando, W.G.D.; Harris, L.J.; Sura, S.; Wang, X. Naturally Occurring Fusarium Species and Mycotoxins in Oat Grains from Manitoba, Canada. Toxins 2021, 13, 670. https://doi.org/10.3390/toxins13090670

AMA Style

Islam MN, Tabassum M, Banik M, Daayf F, Fernando WGD, Harris LJ, Sura S, Wang X. Naturally Occurring Fusarium Species and Mycotoxins in Oat Grains from Manitoba, Canada. Toxins. 2021; 13(9):670. https://doi.org/10.3390/toxins13090670

Chicago/Turabian Style

Islam, M. N., Mourita Tabassum, Mitali Banik, Fouad Daayf, W. G.D. Fernando, Linda J. Harris, Srinivas Sura, and Xiben Wang. 2021. "Naturally Occurring Fusarium Species and Mycotoxins in Oat Grains from Manitoba, Canada" Toxins 13, no. 9: 670. https://doi.org/10.3390/toxins13090670

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