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<p>This study investigates the efficacy of <i>Cuminum cyminum</i> essential oil (EO) as a sustainable alternative for controlling blight disease in chickpea plants caused by <i>Ascochyta rabiei</i>. Seed biopriming with <i>C. cyminum</i> EO followed by hydropriming enhanced seedling vigor and plant growth even under pathogen pressure, without negatively affecting germination. The EO-treated plants exhibited robust disease resistance, significantly outperforming the control and even showing superior results compared to the synthetic fungicide thiabendazole. Biochemical assays indicated that <i>C. cyminum</i> EO treatment induced the activity of defense-related enzymes including peroxidase, polyphenol oxidase, phenylalanine ammonia lyase, chitinase, and β-1,3-glucanase, as well as the accumulation of phenolic compounds. This activation of induced systemic resistance (ISR) mechanisms was key to the enhanced immunity observed in chickpea plants. The field results aligned with greenhouse findings, demonstrating the consistent efficacy of <i>C. cyminum</i> EO in reducing disease severity and incidence, and increased crop yield. This study highlights the potential of <i>C. cyminum</i> EO as a viable, eco-friendly approach for managing chickpea blight, offering a novel, plant-based alternative to conventional fungicides.</p>

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Protective biological control of chickpea blight disease by enhancing plant immunity through seed priming and foliar spraying with Cuminum cyminum essential oil

  • 期刊论文

  • 发表日期：

    2025年11月6日

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  • Hafiz Muhammad Saqib,
  • Sobia Chohan,
  • Muhammad Abid

摘要

This study investigates the efficacy of Cuminum cyminum essential oil (EO) as a sustainable alternative for controlling blight disease in chickpea plants caused by Ascochyta rabiei. Seed biopriming with C. cyminum EO followed by hydropriming enhanced seedling vigor and plant growth even under pathogen pressure, without negatively affecting germination. The EO-treated plants exhibited robust disease resistance, significantly outperforming the control and even showing superior results compared to the synthetic fungicide thiabendazole. Biochemical assays indicated that C. cyminum EO treatment induced the activity of defense-related enzymes including peroxidase, polyphenol oxidase, phenylalanine ammonia lyase, chitinase, and β-1,3-glucanase, as well as the accumulation of phenolic compounds. This activation of induced systemic resistance (ISR) mechanisms was key to the enhanced immunity observed in chickpea plants. The field results aligned with greenhouse findings, demonstrating the consistent efficacy of C. cyminum EO in reducing disease severity and incidence, and increased crop yield. This study highlights the potential of C. cyminum EO as a viable, eco-friendly approach for managing chickpea blight, offering a novel, plant-based alternative to conventional fungicides.