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<p>Tomato (<i>Solanum lycopersicum</i> L.) is among the most widely cultivated crops globally, valued for its nutritional and economic significance. Tomato cultivation is threatened by Fusarium wilt, a vascular disease caused by <i>Fusarium oxysporum</i> f. sp. <i>lycopersici</i> (FOL). This study assessed the potential of melatonin, both synthetic and plant- source (Chemical and <i>Parthenium hysterophorus</i> L., respectively), to mitigate vascular wilt disease progression in tomato plants. Melatonin was applied through root drenching and foliar spray methods, either individually or in combination. Our results showed that foliar spray method of melatonin application significantly reduced disease severity index to 3.24% and disease incidence to 10%, compared to 73.16% and 100% in untreated infected control plants. The melatonin application improved total chlorophyll (a + b) contents (13.92 ± 0.11&#xa0;mg g<sup>−1</sup> FW) compared to 9.15 ± 0.14&#xa0;mg g<sup>−1</sup> FW in pathogen-only controls. The level of superoxide dismutase, peroxidase and catalase declined in melatonin treated plants. In addition to improved growth parameters such as shoot and root length and biomass, melatonin induced resistance appeared to control photo-oxidative damage. Comparative genomic analysis of PMTR1, a known melatonin receptor, revealed species-specific adaptations and structural features consistent with enhanced stress signaling in tomato. Overall, the study highlights exogenous melatonin, as a promising eco-friendly strategy for managing Fusarium wilt supression in tomato.to 9.15 ± 0.14&#xa0;mg g<sup>−1</sup> FW in pathogen-only controls. The level of superoxide dismutase, peroxidase and catalase declined in melatonin treated plants. In addition to improved growth parameters such as shoot and root length and biomass, melatonin induced resistance appeared to control photo-oxidative damage. Comparative genomic analysis of PMTR1, a known melatonin receptor, revealed species-specific adaptations and structural features consistent with enhanced stress signaling in tomato. Overall, the study highlights exogenous melatonin, as a promising eco-friendly strategy for managing Fusarium wilt suppression in tomato.</p>

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Melatonin-induced resistance response activation against Fusarium oxysporum f. sp. lycopersici development in tomatoes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月29日

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  • Hibba Arshad,
  • Waheed Anwar,
  • Muhammad Khurshid,
  • Sana Javed,
  • Adnan Akhter,
  • Graciela Dolores Avila-Quezada,
  • Elsayed Fathi Abd-Allah,
  • Abeer Hashem

摘要

Tomato (Solanum lycopersicum L.) is among the most widely cultivated crops globally, valued for its nutritional and economic significance. Tomato cultivation is threatened by Fusarium wilt, a vascular disease caused by Fusarium oxysporum f. sp. lycopersici (FOL). This study assessed the potential of melatonin, both synthetic and plant- source (Chemical and Parthenium hysterophorus L., respectively), to mitigate vascular wilt disease progression in tomato plants. Melatonin was applied through root drenching and foliar spray methods, either individually or in combination. Our results showed that foliar spray method of melatonin application significantly reduced disease severity index to 3.24% and disease incidence to 10%, compared to 73.16% and 100% in untreated infected control plants. The melatonin application improved total chlorophyll (a + b) contents (13.92 ± 0.11 mg g−1 FW) compared to 9.15 ± 0.14 mg g−1 FW in pathogen-only controls. The level of superoxide dismutase, peroxidase and catalase declined in melatonin treated plants. In addition to improved growth parameters such as shoot and root length and biomass, melatonin induced resistance appeared to control photo-oxidative damage. Comparative genomic analysis of PMTR1, a known melatonin receptor, revealed species-specific adaptations and structural features consistent with enhanced stress signaling in tomato. Overall, the study highlights exogenous melatonin, as a promising eco-friendly strategy for managing Fusarium wilt supression in tomato.to 9.15 ± 0.14 mg g−1 FW in pathogen-only controls. The level of superoxide dismutase, peroxidase and catalase declined in melatonin treated plants. In addition to improved growth parameters such as shoot and root length and biomass, melatonin induced resistance appeared to control photo-oxidative damage. Comparative genomic analysis of PMTR1, a known melatonin receptor, revealed species-specific adaptations and structural features consistent with enhanced stress signaling in tomato. Overall, the study highlights exogenous melatonin, as a promising eco-friendly strategy for managing Fusarium wilt suppression in tomato.