Results – NEM-EMERGE

This section showcases the main results generated by NEM-EMERGE that are available for public dissemination. Here you can explore a range of outputs designed to share knowledge, support practitioners, and advance scientific understanding. These include interactive maps, peer-reviewed scientific publications, practice abstracts tailored for end users, and publicly available deliverables. Together, these resources reflect the project’s progress and provide accessible insights into its scientific achievements and practical solutions.

Click on the tabs below to expand and collapse the different types of content.

Interactive maps

Authors

Type of map

Link to the map

Date

Mohammed Dakhil and Dan Bebber

Initial interactive map of the suitability for the target 6 root-knot nematode (RKN) species (Meloidogyne incognita, M. javanica, M. arenaria, M. enterolobii, M. ethiopica & M. luci).This interactive map on RKN species richness, was developed from the sum of the 6 individual binary maps of suitability based on the threshold of maximum training sensitivity plus specificity (MTSS) using the ensemble species distribution models (SDMs) based on soil bioclimatic predictor variables (https://doi.org/10.1111/gcb.16060) as well as soil-physico-chemical variables such as soil organic carbon content, pH, and cation exchange capacity (obtained from soilgrids datasets, https://soilgrids.org/). These richness maps showing the potential or predicted suitable areas (grid cells of the agricultural landscapes (at 3 km * 3 km spatial resolution). This richness map indicates the potential RKN invasion risk or emergence risk, and doesn’t provide information at the level of specific RKN species. This map can be used as decision-support tool for field survey or sampling, management prioritization of the agricultural landscape and guide the range-shift strategy of the economic crops according to the cropland areas (grid cells) at high or low potential risk.

Initial Interactive Map
View map

Feb. 2025

Mohammed Dakhil and Dan Bebber

Initial interactive map of the suitability for target 3 tropical root-knot nematode
(RKN) species richness (Meloidogyne incognita, M. javanica, M. arenaria). This map of RKN richness was developed similarly to the above, and this showing the potential or predicted suitable areas (grid cells of the agricultural landscapes (3 km * 3 km spatial resolution). This richness map indicates the potential invasion risk or emergence risk and doesn’t provide information at the level of specific RKN species. This map can be used as decision-support tool for field survey or sampling, management prioritization of the agricultural landscape and guide the range-shift strategy of the economic crops according to the cropland areas (grid cells) at high or low potential risk.

Initial Interactive Map
View map

Feb. 2025

Scientific publications

Authors

Title

Type of publication

Date

Arno S. Schaveling, Dennie M. te Molder, Paul Heeres, Joris J. M. van Steenbrugge, Stefan J. S. van de Ruitenbeek, Casper C. van Schaik, Sven van den Elsen, Geert Smant, Mark G. Sterken

The potato cyst nematode Globodera pallida overcomes major potato resistance through selection on standing variation at a single locus

New Phytologist
DOI: 10.1111/nph.70886

Jan. 2026

Arno S. Schaveling, Leidy van Rijt, Yoonseon Do, Nike Soffree, Daan Langendoen, Hilde Room, André Machado Bertran, Margien Raven, Sebastiaan P. van Kessel, Evelyn Y.J. van Heese, Stefan J.S. van de Ruitenbeek, Casper C. van Schaik, Sebastian Kiewnick, Geert Smant, Mark G. Sterken

Globodera pallida virulence on major potato resistance has a common genetic basis across Western Europe

bioRxiv -preprint
DOI: 10.64898/2025.12.22.695896

Dec. 2025

Océane Lechevalier, Magali Esquibet, Eric Grenier, Sylvain Fournet, Josselin Montarry

Adaptation of Globodera pallida to Individual Components Compromises the Durability of Pyramided Resistance in Potato

Evolutionary Applications
DOI: 10.1111/eva.70181

Sept. 2025

Océane Lechevalier, Magali Esquibet, Mathieu Gautier, Rachel Fourdin, Eric Grenier, Sylvain Fournet, Josselin Montarry

Adaptation of the Cyst Nematode Globodera pallida to the Colinear Potato Resistant QTLs GpaV_vrn and GpaV_spl Involved Distinct Genomic Regions and Absence of Cross-Virulence

Molecular Ecology
DOI: 10.1111/mec.70105

Sept. 2025

Robbert van Himbeeck, Stefan Geisen, Casper van Schaik, Sven van den Elsen, Roeland Berendsen, André Bertran, Egbert Schepel, Johannes Helder

Patchy Distribution of Potato Cyst Nematodes Within Single Arable Fields Reveals Local Disease Suppressiveness Mediated by Disparate Microbial Communities

Environmental microbiology
DOI: 10.1111/1462-2920.70113

May 2025

Robbert van Himbeeck, Eline Laura Binnebösz, Deisy Amora, Michele Gottardi, Jaap-Jan Willig, Stefan Geisen, Johannes Helder

Non-invasive, pre-symptomatic detection of potato cyst nematode infection in tomato using chlorophyll fluorescence analysis

Phytopathology. First look
DOI: 10.1094/PHYTO-07-24-0206-R

Sept. 2024

Israël Tankam Chedjou, Josselin Montarry, Sylvain Fournet, Frédéric M. Hamelin

Combining Masculinizing Resistance, Rotation, and Biocontrol to Achieve Durable Suppression of the Potato Pale Cyst Nematode: A Model

Evolutionary Applications. 17(9): e70012.
DOI: 10.1111/eva.70012

Sept. 2024

Practice Abstracts

Practice Abstract 1: Species Distribution Modelling Reveals Invasion Risk of Tropical Root-Knot Nematodes in European Agriculture

Practice Abstract explaining the expansion of tropical root-knot nematodes in Europe, by NEM-EMERGE partners at the University of Exeter.

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Read the Practice Abstract in TURKISH

Practice Abstract 2: Global warming: lifting the inactivation of host plant resistance under elevated soil temperatures

Practice Abstract explaining the development of novel resistant tomato plants, carrying heat-stable resistance genes, and thus conferring resistance to root-knot nematodes even in high soil temperatures.

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Read the Practice Abstract in TURKISH

Practice Abstract 3: Uncontrolled emergence: populations of root-knot nematodes are overcoming resistance in tomato

Practice Abstract explaining the emergence of nematodes able to overcome the resistance of tomato plants, and the study carried out to identify the genomic signature in the nematodes behind this virulence.

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Read the Practice Abstract in TURKISH

Practice Abstract 4: Genetic selection: managing potato cyst nematodes that have overcome current host plant resistances

Practice Abstract explaining the approach that is being followed in NEM-EMERGE to respond to the potato cyst nematodes that have overcome current host plant resistances.

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Read the Practice Abstract in TURKISH

Practice Abstract 5: Cover crop choice: do’s and don’ts regarding root-knot nematode management

Practice Abstract explaining the importance of choosing an appropriate cover crop, as they must keep the health status of the soil, but, at the same time, avoid planting cover crops that might support pests, such as some root-knot nematodes.

Read the Practice Abstract in ENGLISH

Read the Practice Abstract in TURKISH