Abstract
Abstract Fusarium head blight (FHB), caused by members of the Fusarium graminearum species complex, is one of the most serious wheat diseases worldwide, capable of causing severe yield losses and affecting grain quality. Methods available for FHB management include cultural practices, sowing of resistant cultivars, chemical control, and biological control. In the present study, we evaluated the effect of chitosan oligosaccharide on the control of fungal growth, seed infection, disease symptoms and mycotoxin contamination under both controlled environments and in the field. In the in vitro conditions, chitosan oligosaccharide directly affected fungal growth at different levels depending on the concentration used. When applied as a seed treatment, both tebuconazole and chitosan oligosaccharide reduced the incidence of F. graminearum and preserved seed germination potential of infected seeds. In the field, there was no significant difference in disease severity and DON in grains between the unsprayed check and the fungicide, regardless of the doses or times of chitosan oligosaccharide application. 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 its use associated with chemical products, aiming to increase the efficacy of FHB control in wheat.
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Claims 7
Claim · model-written summary
Chitosan oligosaccharide affected fungal growth in vitro depending on concentration.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- chitosan oligosaccharidee0
- Interactor
- Fusarium graminearum
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=60)
Fusarium graminearumt0pathogen - Outcome
- fungal growthe0
- Qualifier
- depending on the concentration usede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_on_Corn_(Zea_mays)_at_Waimea%2C_Hawaii.jpg?width=500)
Verbatim
e0“In the in vitro conditions, chitosan oligosaccharide directly affected fungal growth at different levels depending on the concentration used.”
t0“Fusarium graminearum and mycotoxin contamination in wheat”
Claim · model-written summary
Tebuconazole seed treatment reduced F. graminearum incidence.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- tebuconazolee0
- Interactor
- F. graminearumFusarium graminearume0pathogen
- Outcome
- incidence of F. graminearume0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When applied as a seed treatment, both tebuconazole and chitosan oligosaccharide reduced the incidence of F. graminearum and preserved seed germination potential of infected seeds.”
t0“wheat”
Claim · model-written summary
Chitosan oligosaccharide seed treatment reduced F. graminearum incidence.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- chitosan oligosaccharidee0
- Interactor
- F. graminearumFusarium graminearume0pathogen
- Outcome
- incidence of F. graminearume0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When applied as a seed treatment, both tebuconazole and chitosan oligosaccharide reduced the incidence of F. graminearum and preserved seed germination potential of infected seeds.”
t0“wheat”
Claim · model-written summary
Both seed treatments preserved germination potential of infected wheat seeds.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- chitosan oligosaccharidee0
- Interactor
- F. graminearumFusarium graminearume0pathogent0
- Outcome
- seed germination potentiale0
- Direction
- preservede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both tebuconazole and chitosan oligosaccharide reduced the incidence of F. graminearum and preserved seed germination potential of infected seeds.”
t0“wheat”
Claim · model-written summary
Field disease severity did not differ significantly between unsprayed and fungicide checks across chitosan applications.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- fungicidee0
- Interactor
- Fusarium graminearumFusarium graminearumt0pathogen
- Outcome
- disease severitye0
- Direction
- no significant differencee0
- Comparator
- unsprayed checke0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, there was no significant difference in disease severity and DON in grains between the unsprayed check and the fungicide, regardless of the doses or times of chitosan oligosaccharide application.”
t0“Fusarium graminearum and mycotoxin contamination in wheat”
Claim · model-written summary
Field grain DON did not differ significantly between unsprayed and fungicide checks across chitosan applications.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- fungicidee0
- Interactor
- Fusarium graminearumFusarium graminearumt0pathogen
- Outcome
- DON in grainse0
- Direction
- no significant differencee0
- Comparator
- unsprayed checke0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, there was no significant difference in disease severity and DON in grains between the unsprayed check and the fungicide, regardless of the doses or times of chitosan oligosaccharide application.”
t0“Fusarium graminearum and mycotoxin contamination in wheat”
Claim · model-written summary
Authors suggest chitosan oligosaccharide may be useful in integrated wheat disease management.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- chitosan oligosaccharidee0
- Outcome
- integrated management of the diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan oligosaccharide can potentially be used as a tool in the integrated management of the disease”
t0“wheat”
The same questions in other papers
tebuconazole · Fusarium graminearum · Triticum aestivum (wheat)Results differ
10 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
9 papers more in this group
See all 13 papers →chitosan · Fusarium graminearum · Triticum aestivum (wheat)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
fungicide · Fusarium graminearum · Triticum aestivum (wheat)Results differ
14 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.