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

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-Harbi, Fahad Mohammed Alzuaibr, Abdulrahman Alasmari, Ismail A. Ismail, Eldessoky S. Dessoky and Samar M. A. Doklega ()
Additional contact information
Hemat A. EL-Bauome: Vegetables and Floriculture Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt
Emad A. Abdeldaym: Vegetable Crops Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
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
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

Agriculture, 2022, vol. 12, issue 9, 1-19

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.

Keywords: Brassica oleracea; quality; antioxidant enzymes; abiotic stress; phenolic enzymes (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2077-0472/12/9/1301/pdf (application/pdf)
https://www.mdpi.com/2077-0472/12/9/1301/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jagris:v:12:y:2022:i:9:p:1301-:d:897244

Access Statistics for this article

Agriculture is currently edited by Ms. Leda Xuan

More articles in Agriculture from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().