ArticleBMC plant biology2025
Exogenous melatonin enhances drought tolerance and germination in common buckwheat seeds through the coordinated effects of antioxidant and osmotic regulation.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Melatonin-Mediated Modulation of Metabolic Pathways Enhances Cold Tolerance in Alfalfa (Plants (Basel, Switzerland) · 2026Article
- Integrative WGCNA analysis uncovers the molecular framework of melatonin-mediated drought stress mitigation in potato.BMC plant biology · 2026Article
- Phytomelatonin in Ornamental Horticulture: A Comprehensive Review of Growth Promotion, Stress Tolerance, and Post-Harvest Quality.International journal of molecular sciences · 2026Review
- Exogenous rutin ameliorates NaCl‑induced inhibition of Fagopyrum esculentum germination and early growth.BMC plant biology · 2025Article
- Exogenous Dopamine Alleviates Combined High Temperature and Drought Stress in Loquat [Plants (Basel, Switzerland) · 2025Article
- Enhancing antioxidant defense systems and regulating fatty acid unsaturation: Salicylic acid-mediated alleviation of low-temperature stress in Pitaya seedlings.BMC plant biology · 2025Article
- Melatonin Enhances Drought Tolerance by Regulating the Genes Underlying Photosynthesis and Antioxidant Defense in Rubber Tree (Plants (Basel, Switzerland) · 2025Article
- Correction: Exogenous melatonin enhances drought tolerance and germination in common buckwheat seeds through the coordinated effects of antioxidant and osmotic regulation.BMC plant biology · 2025Article
Corrections and comments
- Erratum issued
Authors and funding
6 authors.
Funding
Abstract
backgroundDrought stress is a major constraint on seed germination and crop productivity, particularly for drought-sensitive crops like common buckwheat (Fagopyrum esculentum). Exogenous melatonin has emerged as a promising strategy to mitigate drought stress by enhancing plant physiological and biochemical responses. However, its specific roles in regulating antioxidant defenses, osmotic adjustment, and plant compounds biosynthesis during buckwheat seed germination under drought stress remain poorly understood.
resultsThis study investigated the effects of 200 µM exogenous melatonin on common buckwheat germination under polyethylene glycol (PEG-6000)-induced drought stress. Melatonin significantly improved germination rates and radicle growth, reduced membrane damage, and enhanced osmotic regulation by increasing proline, soluble sugars, and proteins. Antioxidant enzyme activities (catalase, peroxidase, and superoxide dismutase) and associated gene expression (FtCAT, FtPOD, FtSOD) were markedly upregulated. Molecular docking and dynamics simulations revealed a stable interaction between rutin, a secondary metabolite, and catalase, suggesting enhanced enzyme stabilization. Additionally, melatonin increased rutin and methyl jasmonate synthesis, which contributed to antioxidant defenses and reduced oxidative damage. The coordinated effects of melatonin improved drought tolerance in buckwheat seeds by optimizing osmotic balance, strengthening antioxidant capacity, and stabilizing cellular structures.
conclusionsExogenous melatonin enhances drought tolerance in common buckwheat seeds through the coordinated regulation of antioxidant defenses, osmotic adjustment, and plant compounds production, including methyl jasmonate and rutin, during germination. These findings offer valuable insights for developing practical strategies to improve drought resilience and crop establishment in sensitive agricultural species under water-limited conditions.
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