ArticleFrontiers in plant science2026
Integrated multi-omics analysis reveals the response mechanisms of
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Root-knot nematodes (RKNs) pose a severe threat to Methods: An integrated multi-omics strategy that combined physiological trait analysis, hormone profiling, transcriptome sequencing, and untargeted metabolome analysis was used to systematically clarify the response mechanisms of Results: Comprehensive phenotypic observations combined with antioxidant enzyme activity measurements and hormone profiling identified 6 days post-inoculation (dpi) as a critical response timepoint, characterized by initial gall formation, minimum superoxide dismutase (SOD) activity, peak catalase (CAT) activity, and maximal content of auxin (IAA), abscisic acid (ABA), and salicylic acid (SA). Notably, cytokinin-type hormones were significantly upregulated after RKN infection, with zeatin increasing by 202% at 12 dpi and zeatin riboside reaching 38.5-fold that of the control at 24 dpi. Transcriptomic analysis identified 1,705 differentially expressed genes (DEGs), predominantly enriched in plant hormone signal transduction, zeatin biosynthesis, and plant-pathogen interaction pathways. Untargeted metabolomic analysis identified 658 differentially accumulated metabolites (DAMs), primarily involving carboxylic acid derivatives, amino acids, phospholipids, and isopentenyl alcohol esters; combined analysis further revealed that zeatin biosynthesis was the only significantly enriched common pathway; within this pathway, changes in 8 key genes and 5 core metabolites acted synergistically and were significantly correlated with gall number, soluble sugar content, and multiple hormones. Conclusions: The results indicate that
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