Fusarium Wilt Resistance Mechanisms in Legume Crops
Summary
Fusarium wilt, caused by Fusarium oxysporum, poses a significant threat to legume production worldwide. Resistance mechanisms have been broadly categorised into passive and active defences. Passive defences include structural barriers such as reinforced cell walls, lignin deposition and papilla formation that restrict pathogen ingress. Active defences involve recognition of pathogen‐derived effectors, triggering complex signalling pathways mediated by hormones including salicylic acid, jasmonic acid and ethylene. These pathways lead to priming of pathogenesis‐related proteins, reactive oxygen species accumulation and phytoalexin synthesis. Genetic resistance may be monogenic, conferring race‐specific immunity through single resistance (R) genes, or quantitative, arising from multiple loci, each contributing partial resistance and often more durable under field conditions. Advances in high‐throughput sequencing, transcriptomics and metabolomics have illuminated networks of differentially expressed genes, biochemical markers and quantitative trait loci underlying resistance. Breeding strategies now integrate genomic tools, marker‐assisted selection and gene editing to pyramid resistance alleles. Moreover, understanding the interplay between host genetics and rhizosphere microbiota has opened avenues for biocontrol and sustainable management. Elucidating these mechanisms is crucial for developing resilient cultivars that safeguard global legume yields under evolving pathogen pressures and climatic challenges.
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Fusarium Wilt Resistance Mechanisms in Legume Crops publication trend
The graph below shows the total number of articles in fusarium wilt resistance mechanisms in legume crops across all publications each year (not limited to Nature Index journals).
Technical terms
Formae speciales: Host‐specific strains of Fusarium oxysporum adapted to particular legume species.
Quantitative trait locus (QTL): Genomic region associated with variation in quantitative resistance levels.
Transcriptome: Complete set of RNA transcripts expressed by a genome under specific conditions.
Metabolomics: Systematic analysis of metabolites within a biological sample, used to identify biochemical markers.
Papilla‐like structures: Localised cell wall deposits at fungal penetration sites that strengthen barriers against invasion.
Lignification: Deposition of lignin polymers in cell walls enhancing structural defence.
References
- Metabolic Aspects of Lentil–Fusarium Interactions. Plants (2024).
- Transcriptome profiling reveals the expression and regulation of genes associated with Fusarium wilt resistance in chickpea (Cicer arietinum L.). The Plant Genome (2023).
- Physical and Chemical Barriers in Root Tissues Contribute to Quantitative Resistance to Fusarium oxysporum f. sp. pisi in Pea. Frontiers in Plant Science (2018).
- Fusarium Wilt Management in Legume Crops. Agronomy (2020).
- Breeding, Genetics, and Genomics Approaches for Improving Fusarium Wilt Resistance in Major Grain Legumes. Frontiers in Genetics (2020).
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