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Exogenous Proline, Methionine, and Melatonin Stimulate Growth, Quality, and Drought Tolerance in Cauliflower Plants

Author

Listed:
  • Hemat A. EL-Bauome

    (Vegetables and Floriculture Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt
    These authors contributed equally to this work.)

  • Emad A. Abdeldaym

    (Vegetable Crops Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
    These authors contributed equally to this work.)

  • Mahmoud A. M. Abd El-Hady

    (Vegetables and Floriculture Department, Faculty of Agriculture, Damietta University, Damietta 34517, Egypt)

  • Doaa Bahaa Eldin Darwish

    (Botany Department, Faculty of Science, Mansoura University, Mansoura 35511, Egypt
    Biology Department, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia)

  • Moodi Saham Alsubeie

    (Biology Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia)

  • Mohamed M. El-Mogy

    (Vegetable Crops Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt)

  • Mohammed A. Basahi

    (College of Science and Arts Sajir, Shaqra University, P.O. Box 33, Shaqra 11961, Saudi Arabia)

  • Salem Mesfir Al-Qahtani

    (Biology Department, University College of Tayma, University of Tabuk, P.O. Box 741, Tabuk 47512, Saudi Arabia)

  • Nadi Awad Al-Harbi

    (Biology Department, University College of Tayma, University of Tabuk, P.O. Box 741, Tabuk 47512, Saudi Arabia)

  • Fahad Mohammed Alzuaibr

    (Departments of Biology, Faculty of Science, University of Tabuk, P.O. Box 741, Tabuk 71491, Saudi Arabia)

  • Abdulrahman Alasmari

    (Departments of Biology, Faculty of Science, University of Tabuk, P.O. Box 741, Tabuk 71491, Saudi Arabia)

  • Ismail A. Ismail

    (Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia)

  • Eldessoky S. Dessoky

    (Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia)

  • Samar M. A. Doklega

    (Vegetables and Floriculture Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt)

Abstract

The impact of proline, methionine, and melatonin on cauliflower plants under drought stress is still unclear in the available publications. So, this research aims to study these biochemical compounds’ effects on cauliflower plants grown under well-irrigated and drought-stressed conditions. The obtained results showed that under drought-stressed conditions, foliar application of proline, methionine, and melatonin significantly ( p ≤ 0.05) enhanced leaf area, leaf chlorophyll content, leaf relative water content (RWC), vitamin C, proline, total soluble sugar, reducing sugar, and non-reducing sugar compared to the untreated plants. These treatments also significantly increased curd height, curd diameter, curd freshness, and dry matter compared to untreated plants. Conversely, the phenolic-related enzymes including polyphenol oxidase (PPO), peroxidase (POD), and phenylalanine ammonia-lyase (PAL) were significantly reduced compared to the untreated plants. A similar trend was observed in glucosinolates, abscisic acid (ABA), malondialdehyde (MDA), and total phenols. Eventually, it can be concluded that the foliar application of proline, methionine, and melatonin can be considered a proper strategy for enhancing the growth performance and productivity of cauliflower grown under drought-stressed conditions.

Suggested Citation

  • Hemat A. EL-Bauome & Emad A. Abdeldaym & Mahmoud A. M. Abd El-Hady & Doaa Bahaa Eldin Darwish & Moodi Saham Alsubeie & Mohamed M. El-Mogy & Mohammed A. Basahi & Salem Mesfir Al-Qahtani & Nadi Awad Al-, 2022. "Exogenous Proline, Methionine, and Melatonin Stimulate Growth, Quality, and Drought Tolerance in Cauliflower Plants," Agriculture, MDPI, vol. 12(9), pages 1-19, August.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:9:p:1301-:d:897244
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    References listed on IDEAS

    as
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