Fusarium Head Blight Management in Cereal Crops

Fusarium head blight (FHB) is a devastating fungal disease of wheat, barley and other small-grain cereals that not only reduces yield but also contaminates grain with harmful mycotoxins. Effective management relies on an integrated approach combining cultural practices, resistant cultivars, chemical fungicides and emerging biotechnological interventions. Crop rotation and residue management reduce inoculum levels, while optimised sowing dates and fungicide programmes mitigate disease development during flowering. Genetic resistance remains the most sustainable long-term strategy, with both major quantitative trait loci (QTL) and minor genes contributing to Type I (infection) and Type II (spread) resistance. Marker-assisted and genomic selection accelerate the incorporation of resistance alleles into elite germplasm. Advances in understanding pathogen biology—ranging from population structure and chemotype dynamics to molecular regulation of toxin biosynthesis—are informing new control tactics. Biological agents and RNA-based approaches are under evaluation as adjuncts to conventional methods. Together, these efforts aim to safeguard global cereal production and grain safety in the face of evolving Fusarium populations and changing climates.

Research from Nature Portfolio

Recent studies have uncovered a novel layer of regulation in the biosynthesis of deoxynivalenol (DON), the principal mycotoxin produced by Fusarium graminearum. A long non-coding RNA transcribed from the TRI5 promoter was shown to act as a cis-acting suppressor of the key enzyme for DON synthesis. Regulatory factors that coordinate sense and antisense transcripts of critical TRI genes were found to fine-tune mycotoxin output. Manipulating this RNA element in situ altered DON accumulation without compromising fungal viability, suggesting potential targets for RNA-based disease control and toxin suppression.

Fusarium Head Blight Management in Cereal Crops publication trend

The graph below shows the total number of articles in fusarium head blight management in cereal crops across all publications each year (not limited to Nature Index journals).

Technical terms

Mycotoxin: A toxic secondary metabolite produced by fungi, notably deoxynivalenol in Fusarium-infected grain.

Deoxynivalenol (DON): A trichothecene mycotoxin that contributes to disease symptoms and poses health risks to humans and livestock.

Quantitative trait locus (QTL): A genomic region that contributes to variation in a quantitative trait, such as disease resistance.

Long non-coding RNA (lncRNA): An RNA molecule longer than 200 nucleotides that does not encode a protein but can regulate gene expression.

References

1. Regulation of TRI5 expression and deoxynivalenol biosynthesis by a long non-coding RNA in Fusarium graminearum. Nature Communications (2024).
2. Adaptation of Fusarium Head Blight Pathogens to Changes in Agricultural Practices and Human Migration. Advanced Science (2024).
3. Breeding for Fusarium head blight resistance in wheat—Progress and challenges. Plant Breeding (2019).