Mycotoxins Associated to Fusarium Species that Caused Fusarium Head Blight in Wheat in Latin-America

Pinto, Virginia Fernández; Patriarca, Andrea; Pose, Graciela Noemí

doi:10.1007/978-94-007-7091-1_5

Cited by 3 publications

(1 citation statement)

References 48 publications

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“…In addition to the damage caused in the grains, the mycotoxins produced by F. graminearum are a major concern to the small grain production. Among the mycotoxins reported, several studies indicated the predominance of DON (Marasas, 1991;Pinto et al, 2013). A study investigated mycotoxin contamination in 66 wheat samples obtained in 38 municipalities in Rio Grande do Sul state in Brazil.…”

Section: Importance Of the Diseasementioning

confidence: 99%

Chitosan oligosaccharide: use to control Fusarium head blight and to reduce deoxynivalenol accumulation in wheat grains

Machado¹

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Wheat is one of the most important cereal crops worldwide, but several fungal diseases can affect crop yield. Among them, Fusarium head blight (FHB), caused by members of the Fusarium graminearum species complex, is one of the most serious wheat diseases worldwide, resulting in lost ofin yield and grain quality due to the accumulation of mycotoxins. There are several strategies for FHB management, including cultural practices, sowing of resistant cultivars, chemical control, biological control, among others. The use of alternative products, such as chitosan and its derivatives, can be a viable alternative for disease control. The present study proposes to investigate the use of chitosan oligosaccharide as an alternative product to reduce FHB intensity and to reduce mycotoxin contamination in wheat grains. The trials were carried out in the 2021 and 2022. The experiments were divided into in vitro tests, seed treatment and foliar application on wheat plants under greenhouse and field conditions. In the in vitro trials, it was possible to observe that the chitosan oligosaccharide directly affected the growth of F. graminearum, depending on the concentration used. When applied in seed treatment, both tebuconazole and chitosan oligosaccharide reduced the incidence of F. graminearum and preserved the germination potential of seeds when inoculated with the fungus. In general, there was no significant reduction in disease severity between doses or times of chitosan oligosaccharide application in relation to the unsprayed check and the fungicide. However, an association between the reduction of disease intensity was observed, although not significant, with the reduction of the accumulation of DON in the grains. The results of this study suggest that chitosan oligosaccharide can potentially be used as a tool in the integrated management of the disease, establishing a basis for future studies to explore the use of this product associated with chemical products, aiming to increase the efficacy of FHB control in wheat. Keywords: Fusarium graminearum. Triticum aestivum. Alternative control. Integrated management of plant diseases.

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Section: Importance Of the Diseasementioning

confidence: 99%

Chitosan oligosaccharide: use to control Fusarium head blight and to reduce deoxynivalenol accumulation in wheat grains

Machado¹

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Influence of the time of fungicide application in the production of trichothecenes on field inoculated spikes from wheat grown in Argentina

Pesquero

Albuquerque

Rojas

et al. 2021

Australasian Plant Pathol.

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Co-occurrence and distribution of deoxynivalenol, nivalenol and zearalenone in wheat from Brazil

Calori‐Domingues

Bernardi

Nardin

et al. 2016

Food Additives & Contaminants: Part B

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Fusarium mycotoxins deoxynivalenol (DON), nivalenol (NIV) and zearalenone (ZEN) were investigated in wheat from the 2009 and 2010 crop years. Samples (n = 745) from commercial fields were collected in four wheat producing regions (WPR) which differed in weather conditions. Analyses were performed using HPLC-DAD. Contamination with ZEN, DON and NIV occurred in 56, 86 and 50%, respectively. Also, mean concentrations were different: DON = 1046 µg kg(-1), NIV < 100 µg kg(-1) and ZEN = 82 µg kg(-1). Co-occurrence of ZEN, DON and NIV was observed in 74% of the samples from 2009 and in 12% from 2010. Wet/cold region WPR I had the highest mycotoxin concentration. Wet/moderately hot region WPR II had the lowest mycotoxin levels. Furthermore, the mean concentration of each mycotoxin was higher in samples from 2009 as compared with those from 2010. Precipitation during flowering or harvest periods may explain these results.

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Mycotoxins Associated to Fusarium Species that Caused Fusarium Head Blight in Wheat in Latin-America

Cited by 3 publications

References 48 publications

Chitosan oligosaccharide: use to control Fusarium head blight and to reduce deoxynivalenol accumulation in wheat grains

Chitosan oligosaccharide: use to control Fusarium head blight and to reduce deoxynivalenol accumulation in wheat grains

Influence of the time of fungicide application in the production of trichothecenes on field inoculated spikes from wheat grown in Argentina

Co-occurrence and distribution of deoxynivalenol, nivalenol and zearalenone in wheat from Brazil

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