Nematode Interactions in Agriculture

Plant‐parasitic nematodes are microscopic roundworms that invade crop roots and disrupt water and nutrient uptake, causing stunting, wilting and significant yield losses worldwide. Among these, the soybean cyst nematode and root‐knot nematodes rank among the most damaging, deploying specialised effectors to suppress host defences and establish permanent feeding sites. In contrast, free‐living nematodes play beneficial roles in organic matter decomposition and nutrient cycling, illustrating the dual ecological roles of these organisms. Advances in molecular diagnostics—from mitochondrial barcoding to pheromone‐based detection—have enhanced species identification and field surveillance. Management has shifted towards integrated approaches combining resistant cultivars, cultural practices, biological control agents and selective nematicides to curb pest pressure while preserving soil health. Emerging tools such as genome editing, remote sensing and microbiome engineering promise to refine resistance breeding and surveillance, supporting sustainable crop protection and long‐term soil biodiversity.

Research from Nature Portfolio

Recent studies have elucidated novel genetic and signalling mechanisms underpinning crop resistance and host recognition of nematodes. In soybean, loss‐of‐function mutations in a soluble NSF attachment protein gene confer enhanced resistance to soybean cyst nematode when introduced via genome editing, providing a new avenue for durable host‐plant resistance. Complementing this, research has shown that plant‐parasitic nematodes secrete ascaroside pheromones that act as conserved molecular signatures, triggering innate immune pathways across multiple species. These findings deepen our understanding of plant–nematode dialogues and pave the way for resistance strategies that harness both genetic and chemical signalling mechanisms.

Nematode Interactions in Agriculture publication trend

The graph below shows the total number of articles in nematode interactions in agriculture across all publications each year (not limited to Nature Index journals).

Technical terms

Nematode: A diverse phylum of unsegmented roundworms, some of which are harmful to plants.

Plant‐parasitic nematode: A nematode species that feeds on living plant tissue, often causing crop damage.

Soybean cyst nematode: Heterodera glycines, a major pest of soybean that forms cysts on roots and reduces yields.

Root‐knot nematode: Meloidogyne spp., sedentary endoparasites that induce gall formation on roots.

Ascarosides: Small nematode‐derived pheromones recognised by plants as molecular patterns to trigger defence.

Nematicide: A chemical agent used to kill or inhibit nematodes in agricultural soils.

Integrated nematode management: A holistic strategy combining genetic, cultural, biological and chemical measures to control nematodes sustainably.

References

1. Loss-of-function of an α-SNAP gene confers resistance to soybean cyst nematode. Nature Communications (2023).
2. Conserved nematode signalling molecules elicit plant defenses and pathogen resistance. Nature Communications (2015).
3. Integrated Nematode Management in a World in Transition: Constraints, Policy, Processes, and Technologies for the Future. Annual Review of Phytopathology (2023).
4. Selectivin: A nematicide from parasitic nematodes-specifically activated chemical. Advanced Agrochem (2024).
5. Recent Advances in the Development of Environmentally Benign Treatments to Control Root-Knot Nematodes. Frontiers in Plant Science (2020).
6. Mitochondrial coding genome analysis of tropical root-knot nematodes (Meloidogyne) supports haplotype based diagnostics and reveals evidence of recent reticulate evolution. Scientific Reports (2016).