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Crop losses due to pathogens are a critical global challenge threatening food security and agricultural sustainability. Recent advances in plant science have highlighted the role of epigenetic regulation in plant immunity. This review examines current insights into how plants utilize epigenetic modifications, focusing on histone modifications, DNA methylation changes, and chromatin remodelling, to modulate defence gene expression and adapt to biotic stress. We explore how histone modifications influence both basal and induced immune responses through key enzymes and we examine the dual roles of DNA methylation in transcriptional activation and repression. Additionally, the review discusses ATP-dependent chromatin remodelling complexes and non-coding RNA to highlight their contribution in fine tuning plant immunity. Finally, we discuss emerging technologies involved in epigenome editing and identify the knowledge gaps that must be addressed before translating our findings into making resilient agricultural systems. Supplementary Information: The online version contains supplementary material available at 10.1186/s42483-025-00393-7.
Ampntelnour et al. (Tue,) studied this question.
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