Disease & Mycotoxins
Institutional Research
Medium
Breakthrough in Combating Fusarium Head Blight
USDA-ARS · United States · Disease & Mycotoxins
USDA researchers have made a significant discovery in the fight against Fusarium Head Blight, a major disease affecting wheat and barley crops. The disease causes over $1 billion in annual yield losses and produces mycotoxins that contaminate grain. The team identified a key molecule, FgTPP1, that helps the fungus infect plants.
Practical impact
This discovery could lead to new strategies for controlling Fusarium Head Blight, reducing yield losses and mycotoxin contamination in malting barley and wheat crops.
Why it matters for South America: Fusarium Head Blight is a significant threat to wheat and barley crops in South America, where wet conditions and high temperatures can facilitate the disease's spread.
Disease & Mycotoxins
Scientific Paper
Medium
Hyperspectral Imaging for Fusarium Head Blight Detection
arXiv · · Disease & Mycotoxins
A self-supervised method using hyperspectral imaging and feature mining detects Fusarium Head Blight in cereal grains. This approach offers a promising solution for accurate and efficient disease monitoring, reducing labor-intensive manual identification. The method is validated and available for reproduction.
Practical impact
Enhances disease detection efficiency and accuracy in malting barley production
Why it matters for South America: May benefit malting barley producers in South America by improving crop disease management
Disease & Mycotoxins
Scientific Paper
Medium
Reducing Mycotoxins in Winter Barley
Toxins · · Disease & Mycotoxins
Research on winter barley examined the effects of agrotechnical practices on grain mycobiome and mycotoxin levels. Enhanced practices increased yields and improved grain quality, while higher mycotoxin concentrations were found in low-yield treatments. Understanding fungal interactions can inform seed storage strategies and material classification.
Practical impact
Optimizing agrotechnical practices can reduce mycotoxin levels in barley, improving its quality for malting and feed purposes.
Why it matters for South America: Barley producers in South America can benefit from adopting enhanced agrotechnical practices to improve grain quality and reduce mycotoxin levels.
Disease & Mycotoxins
Scientific Paper
Medium
Assessing Fusarium graminearum Infection in Barley
Phytopathology · · Disease & Mycotoxins
Researchers analyzed barley spikes to investigate Fusarium head blight infection. They found significant interactions between genotype and severity rating categories, with visual severity correlating with fungal presence and biomass. The study highlights the importance of diverse measurement approaches for accurate evaluation.
Practical impact
Improved screening methods for FHB resistance can enhance malting barley quality and safety.
Why it matters for South America: FHB is a significant concern in South American barley crops, affecting yield and quality.
Disease & Mycotoxins
Scientific Paper
Medium
Reducing Fusarium Head Blight in Barley with RNAi Technology
Molecular plant-microbe interactions : MPMI · · Disease & Mycotoxins
Researchers used RNA interference to reduce Fusarium head blight and mycotoxin contamination in barley. By targeting the TRI5 gene, they achieved significant reductions in disease severity and toxin production. This approach shows promise for improving food safety in the malting barley industry.
Practical impact
This technology can help reduce mycotoxin contamination, improving food safety and quality in malting barley.
Why it matters for South America: This innovation can benefit barley producers in South America by reducing crop losses and improving grain quality.
Disease & Mycotoxins
Scientific Paper
High
Mycotoxin Transformation in Barley Malting Process
Food chemistry · · Disease & Mycotoxins
Research on barley malting reveals patterns of mycotoxin transformation, with deoxynivalenol converting to deoxynivalenol-3-glucoside. This study provides insights into mycotoxin metabolism during malting, crucial for developing mitigation strategies. The findings show low adult exposure risk but highlight the need for monitoring and control measures.
Practical impact
Understanding mycotoxin transformation can help develop targeted mitigation strategies for safer malt production.
Why it matters for South America: This research has implications for barley malting and beer production in South America, where Fusarium mycotoxins are a concern.
Disease & Mycotoxins
Scientific Paper
Medium
Uncovering Hidden Mycotoxins in Malting Barley
Food chemistry · · Disease & Mycotoxins
A new method detects hidden mycotoxins in malting barley, revealing substantial increases in toxin levels. This approach can help estimate maximum potentially releasable fractions of bound mycotoxins, supporting exposure assessment and research. The method's application to malting barley and oats showed significant increases in detectable toxin levels.
Practical impact
Improved mycotoxin detection methods can enhance food safety and quality control in the malting barley industry.
Why it matters for South America: This research can inform regional policies and practices for mycotoxin management in malting barley production in South America.
Disease & Mycotoxins
Scientific Paper
Medium
Barley Defense Against Fusarium Head Blight
Stress biology · · Disease & Mycotoxins
Fusarium Head Blight is a devastating disease affecting barley yields. Research using multi-omics approaches reveals that barley responds to infection by upregulating biosynthesis of aromatic amino acid-derived compounds, including tryptophan-derived metabolites. This response is consistent across diverse barley varieties with type II resistance.
Practical impact
Understanding barley's defense mechanisms can inform breeding programs and disease management strategies.
Why it matters for South America: Fusarium Head Blight is a significant concern in South American barley-producing regions, impacting crop quality and yield.
Disease & Mycotoxins
Scientific Paper
High
Native Barley in Brazilian Pampa Shows Low Mycotoxin Levels
International journal of food microbiology · · Disease & Mycotoxins
A study on native barley in the Brazilian Pampa found low mycotoxin levels despite colonization by Fusarium species. The most prevalent mycotoxins were deoxynivalenol-3-glucoside and 3-acetyldeoxynivalenol. Native barley may metabolize deoxynivalenol into less toxic compounds, suggesting potential for developing more resistant cereals.
Practical impact
Native barley may provide genetic resources for developing resistant cereals, contributing to sustainable agriculture and food safety.
Why it matters for South America: The study highlights the importance of monitoring native barley populations in South America for toxigenic Fusarium species amid agricultural expansion and climate change.
Disease & Mycotoxins
Technical Review
Very High
Fusarium head blight and DON management in malting barley
Tropical Plant Pathology (Springer) · Global · Disease & Mycotoxins
Reviews of Fusarium head blight bring together resistance breeding, agronomy and grain-handling strategies to control deoxynivalenol (DON) accumulation. DON limits are a hard gate for malting acceptance.
Practical impact
DON above thresholds can reject an entire malting lot. Integrated management protects both food safety compliance and contract value.
Why it matters for South America: Fusarium and DON are among the most consequential malting-quality risks in the region's humid production zones.