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dc.contributor.author
Drakopoulos, Dimitrios
dc.contributor.author
Meca, Giuseppe
dc.contributor.author
Torrijos, Raquel
dc.contributor.author
Marty, Anja
dc.contributor.author
Kägi, Andreas
dc.contributor.author
Jenny, Eveline
dc.contributor.author
Forrer, Hans-Rudolf
dc.contributor.author
Six, Johan
dc.contributor.author
Vogelgsang, Susanne
dc.date.accessioned
2020-08-07T12:22:35Z
dc.date.available
2020-07-21T09:18:15Z
dc.date.available
2020-08-07T12:22:35Z
dc.date.issued
2020-07-21
dc.identifier.issn
1664-302X
dc.identifier.other
10.3389/fmicb.2020.01595
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/427674
dc.identifier.doi
10.3929/ethz-b-000427674
dc.description.abstract
Fusarium graminearum is a phytopathogenic fungus that causes Fusarium head blight in small-grain cereals, such as wheat, with significant yield reductions. Moreover, it contaminates the cereal grains with health-threatening mycotoxins, such as deoxynivalenol (DON), jeopardizing food and feed safety. Plant-based biopesticides, i.e. botanicals, have recently gained increased interest in crop protection as alternatives to synthetic chemical products. The main objective of this study was to test the control efficacy of botanicals based on white or Indian/Oriental mustard seed flours (Tillecur – Ti, Pure Yellow Mustard – PYM, Pure Oriental Mustard – POM, Oriental Mustard Bran – OMB) on F. graminearum infection and mycotoxin accumulation in wheat grain. Botanicals at 2% concentration showed a higher efficacy in inhibiting mycelium growth in vitro compared with a prothioconazole fungicide (F). In the growth chamber experiment under controlled conditions, the spraying agents reduced DON content in grain in the following order: F = Ti = PYM > POM > OMB. The antifungal activity of the botanicals may be attributed to their bioactive matrices containing isothiocyanates (ITCs) and phenolic acids. Allyl ITC was detected in POM and OMB at 8.38 and 4.48 mg g–1, while p-hydroxybenzyl ITC was found in Ti and PYM at 2.56 and 2.44 mg g–1, respectively. Considerable amounts of various phenolic acids were detected in all botanicals. Under field conditions, only the use of F significantly decreased F. graminearum infection and DON content in grain. An additional important finding of this study is that disease control was more difficult when infection was done with ascospores than conidia, which might have several potential implications considering that ascospores are more important in Fusarium head blight epidemics. Our results suggest that mustard-based botanicals are promising biopesticides for the control of Fusarium head blight in small-grain cereals, but for field applications, an appropriate formulation is necessary to stabilize and prolong the antifungal activity, especially against ascospores.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Frontiers Media
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Fusarium head blight
en_US
dc.subject
Antifungal botanical
en_US
dc.subject
Isothiocyanate
en_US
dc.subject
Phenolic acids
en_US
dc.subject
Mycotoxin
en_US
dc.subject
Conidia
en_US
dc.subject
Ascospores
en_US
dc.subject
Wheat
en_US
dc.title
Control of Fusarium graminearum in Wheat With Mustard-Based Botanicals: From in vitro to in planta
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
Frontiers in Microbiology
ethz.journal.volume
11
en_US
ethz.journal.abbreviated
Front Microbiol
ethz.pages.start
1595
en_US
ethz.size
15 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Lausanne
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::03982 - Six, Johan / Six, Johan
en_US
ethz.date.deposited
2020-07-21T09:18:25Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-08-07T12:22:57Z
ethz.rosetta.lastUpdated
2024-02-02T11:33:11Z
ethz.rosetta.versionExported
true
ethz.COinS
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