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Background <p>Since the banning of chemical products used to control plant-parasitic nematode populations, the use of resistant plants has become the most effective management approach against the potato cyst nematode <i>Globodera pallida</i>. However, some populations, from experimental evolution setups and field samplings, are able to overcome these resistances. Herein, a transcriptomics approach was used to disentangle the mechanisms by which <i>G. pallida</i> adapts to the plant resistant factor <i>GpaV</i><sub><i>vrn</i></sub>, and to elucidate the functions involved in this adaptation.</p> Results <p>Differential gene expression analysis between virulent and avirulent lineages originating from experimental evolution experiments identified candidate genes involved in the adaptation to <i>GpaV</i><sub><i>vrn</i></sub>. GO enrichment analyses showed that virulent lineages up-regulated genes involved in cell wall destruction and stress response compared to avirulent lineages. In virulent lineages, a set of genes was up-regulated later in the parasitism stages and are thus potentially involved in adaptation. These genes encode effectors of the VAP and SPRYSEC families contributing to the suppression of plant immunity.</p> Conclusion <p>These results will have a major impact on our understanding of the mechanisms by which nematodes adapt to resistant plants, and will contribute to identify effective and sustainable management strategies.</p>

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Identification through a transcriptomic approach of candidate genes involved in the adaptation of the cyst nematode Globodera pallida to the potato resistance factor GpaVvrn

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月24日

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  • Océane Lechevalier,
  • Kévin Gazengel,
  • Magali Esquibet,
  • Sylvain Fournet,
  • Eric Grenier,
  • Stéphanie Daval,
  • Josselin Montarry

摘要

Background

Since the banning of chemical products used to control plant-parasitic nematode populations, the use of resistant plants has become the most effective management approach against the potato cyst nematode Globodera pallida. However, some populations, from experimental evolution setups and field samplings, are able to overcome these resistances. Herein, a transcriptomics approach was used to disentangle the mechanisms by which G. pallida adapts to the plant resistant factor GpaVvrn, and to elucidate the functions involved in this adaptation.

Results

Differential gene expression analysis between virulent and avirulent lineages originating from experimental evolution experiments identified candidate genes involved in the adaptation to GpaVvrn. GO enrichment analyses showed that virulent lineages up-regulated genes involved in cell wall destruction and stress response compared to avirulent lineages. In virulent lineages, a set of genes was up-regulated later in the parasitism stages and are thus potentially involved in adaptation. These genes encode effectors of the VAP and SPRYSEC families contributing to the suppression of plant immunity.

Conclusion

These results will have a major impact on our understanding of the mechanisms by which nematodes adapt to resistant plants, and will contribute to identify effective and sustainable management strategies.