Control of Fusarium graminearum in Wheat With Mustard-Based Botanicals: From in vitro to in planta

Drakopoulos, Dimitrios; Meca, Giuseppe; Torrijos, Raquel; Marty, Anja; Kägi, Andreas; Jenny, Eveline; Forrer, Hans‐Rudolf; Six, Johan; Vogelgsang, Susanne

doi:10.3389/fmicb.2020.01595

Cited by 23 publications

(20 citation statements)

References 45 publications

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“…As it was expected and has already been shown in previous studies [29][30][31], we found positive correlations between the incidence of F. graminearum in grains and several Fusarium mycotoxins, e.g., deoxynivalenol, culmorin, zearalenone, and aurofusarin. However, the observed positive correlations between the incidence of F. graminearum and the contents of equisetin and moniliformin in grains could be due to possible microscopic misclassifications in the seed health tests.…”

Section: Incidence Of Fusarium Head Blight Causing Species In Grains supporting

confidence: 91%

Fusarium Head Blight and Associated Mycotoxins in Grains and Straw of Barley: Influence of Agricultural Practices

et al. 2021

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Fusarium head blight (FHB) is a devastating fungal disease of small-grain cereals that causes significant yield losses and mycotoxin contamination, diminishing food and feed safety worldwide. In contrast to wheat, little is known about the agricultural practices that influence FHB and Fusarium mycotoxins in barley. Thus, a nationwide survey was conducted across Switzerland for harvest samples in 2016 and 2017, accompanied with a questionnaire to obtain information about the agricultural practices in each barley field. In total, 253 grain and 237 straw samples were analyzed. In both years, F. graminearum was the predominant Fusarium species in grains followed by F. avenaceum and F. poae. Growing maize before barley was associated with increased amount of F. graminearum DNA in grains and straw as well as with elevated concentrations of deoxynivalenol in grains of barley. On the other hand, growing pasture before barley resulted in increased incidence of F. poae and concentration of numerous mycotoxins in grains (e.g., enniatins) and straw (e.g., beauvericin). Reduced tillage practices were linked to increased incidence of F. graminearum and deoxynivalenol content in grains and straw. In contrast, conventional tillage was linked to higher incidence of F. poae. Moreover, use of spring barley was associated with decreased amount of F. graminearum DNA in grains and straw, but increased incidence of F. poae and F. avenaceum. Use of the spring variety Eunova was linked to increased concentrations of several Fusarium mycotoxins in grains (e.g., enniatins and nivalenol). Furthermore, the application of strobilurin-based fungicides was associated with higher deoxynivalenol and beauvericin contents in grains. The application of plant growth regulators was associated with increased concentration of some Fusarium mycotoxins in grains (e.g., culmorin), while absence of growth regulators application was linked to elevated concentration of some other mycotoxins (e.g., nivalenol). We conclude that individual agricultural practices can suppress some FHB causing species and reduce the associated mycotoxins, but can promote others. Hence, integrated control measures combining numerous prevention and intervention strategies should be applied for the sustainable management of mycotoxins in barley.

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Section: Incidence Of Fusarium Head Blight Causing Species In Grains supporting

confidence: 91%

Fusarium Head Blight and Associated Mycotoxins in Grains and Straw of Barley: Influence of Agricultural Practices

et al. 2021

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“…To reduce the risk of FHB infections, the presented on-farm field experiments proved that spore traps are a highly valuable tool to identify the most suitable maize residue treatments. The investigations on mulch layers and botanicals [32] as well as BCA applications on maize residues [33] are fully in line with our results and underline that plot-specific traps allow comparing the effect of different maize residue treatments.…”

Section: Correlation Between Colony Forming Units Sampled With the Agroscope (Ags) Spore Trap And The Deoxynivalenol (Don) Content In Whesupporting

confidence: 87%

“…Petri dishes were placed in the evening (18:00-19:00) in the traps and collected on the following morning (09:00-10:00), allowing a period of 14 to 16 h for ascospore deposition, an approach that is probably well suited for the collection of F. graminearum ascospores. There was a good correlation between ascospore deposition and DON content, with a coefficient of 0.71 and 0.75 (p < 0.001) in the first and the second year [32]. In our on-farm experiment in 2008, we also obtained a CFU/DON correlation coefficient of 0.76 for three-time spore collection at 90 cm, and 0.89 for the collection at 50 and 90 cm.…”

Section: Correlation Between Colony Forming Units Sampled With the Agroscope (Ags) Spore Trap And The Deoxynivalenol (Don) Content In Whesupporting

confidence: 54%

Low-Cost Spore Traps: An Efficient Tool to Manage Fusarium Head Blight through Improved Cropping Systems

et al. 2021

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Fusarium head blight (FHB) is a devastating disease of wheat. Worldwide, Fusarium graminearum is the most dominant FHB-causing species. Its most common toxin, deoxynivalenol (DON), impairs food and feed safety and has an enormous economic impact. Agronomic factors such as crop rotation, soil management and host genotype strongly influence the occurrence of F. graminearum. Infected plant debris from previous crops, on which perithecia and ascospores develop, represent the main source for FHB, and hence, improved cropping systems aim to reduce this inoculum to decrease the infection risk. The best measure to evaluate the disease pressure is spore traps that detect deposited airborne ascospores. Commercial spore traps are expensive and require power sources, thus, they are not suitable for investigations in field experiments with different treatments. In consequence, we developed spore traps containing a Petri dish with Fusarium-selective agar, protected by aluminum dishes and attached on a wooden board. We compared the data of our low-cost trap with those of a commercial high-throughput jet sampler and obtained equivalent results. In field experiments to compare cropping systems, we observed a high correlation between the DON content in wheat grains and the number of colonies from deposited spores. Our spore trap proved to be a highly valuable tool to not only study FHB epidemiology but also to identify innovative cropping systems with a lower risk for FHB and DON contamination.

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“…As much as a 1000-fold CFU and 6-fold free fatty acid (FFA) content increase was observed in non-treated samples compared with the fumigated ones, after 4.5 months of storage. Additional fungi inhibited by ITCs on grains include Aspergillus flavus [ 70 , 218 , 219 ], Aspergillus parasiticus [ 219 , 220 , 221 , 222 , 223 ], Penicillium verrucosum [ 219 , 224 ], Fusarium verticilloides [ 45 , 223 ], Fusarium graminearum [ 106 ], Alternaria alternata and Gibberella zeae [ 45 ]. The above experiments typically used allyl ITC vapor as the bioactive agent.…”

Section: Preservation and Other Applicationsmentioning

confidence: 99%

“…The above experiments typically used allyl ITC vapor as the bioactive agent. The experiments were carried out on various widely used grains, including maize [ 45 , 70 , 219 , 225 , 226 ], peanuts [ 218 , 221 ], Brazil nuts [ 222 ], wheat [ 106 , 219 ] and barley [ 219 , 224 ]. Several studies also showed inhibition of the production of one or more aflatoxin variants [ 45 , 70 , 219 , 221 , 222 , 223 , 226 ], ochratoxin [ 219 ], tricothecene HT-2 and zearalenone [ 45 ].…”

Section: Preservation and Other Applicationsmentioning

confidence: 99%

Effects of Glucosinolate-Derived Isothiocyanates on Fungi: A Comprehensive Review on Direct Effects, Mechanisms, Structure-Activity Relationship Data and Possible Agricultural Applications

Plaszkó

Szűcs

Vasas

et al. 2021

JoF

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Plants heavily rely on chemical defense systems against a variety of stressors. The glucosinolates in the Brassicaceae and some allies are the core molecules of one of the most researched such pathways. These natural products are enzymatically converted into isothiocyanates (ITCs) and occasionally other defensive volatile organic constituents (VOCs) upon fungal challenge or tissue disruption to protect the host against the stressor. The current review provides a comprehensive insight on the effects of the isothiocyanates on fungi, including, but not limited to mycorrhizal fungi and pathogens of Brassicaceae. In the review, our current knowledge on the following topics are summarized: direct antifungal activity and the proposed mechanisms of antifungal action, QSAR (quantitative structure-activity relationships), synergistic activity of ITCs with other agents, effects of ITCs on soil microbial composition and allelopathic activity. A detailed insight into the possible applications is also provided: the literature of biofumigation studies, inhibition of post-harvest pathogenesis and protection of various products including grains and fruits is also reviewed herein.

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Control of Fusarium graminearum in Wheat With Mustard-Based Botanicals: From in vitro to in planta

Cited by 23 publications

References 45 publications

Fusarium Head Blight and Associated Mycotoxins in Grains and Straw of Barley: Influence of Agricultural Practices

Fusarium Head Blight and Associated Mycotoxins in Grains and Straw of Barley: Influence of Agricultural Practices

Low-Cost Spore Traps: An Efficient Tool to Manage Fusarium Head Blight through Improved Cropping Systems

Effects of Glucosinolate-Derived Isothiocyanates on Fungi: A Comprehensive Review on Direct Effects, Mechanisms, Structure-Activity Relationship Data and Possible Agricultural Applications

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