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

被引：42
作者：
EL-Bauome, Hemat A. [1 ]
Abdeldaym, Emad A. [2 ]
Abd El-Hady, Mahmoud A. M. [3 ]
Darwish, Doaa Bahaa Eldin [4 ,5 ]
Alsubeie, Moodi Saham [6 ]
El-Mogy, Mohamed M. [2 ]
Basahi, Mohammed A. [7 ]
Al-Qahtani, Salem Mesfir [8 ]
Al-Harbi, Nadi Awad [8 ]
Alzuaibr, Fahad Mohammed [9 ]
Alasmari, Abdulrahman [9 ]
Ismail, Ismail A. [10 ]
Dessoky, Eldessoky S. [10 ]
Doklega, Samar M. A. [1 ]
机构：
[1] Mansoura Univ, Fac Agr, Vegetables & Floriculture Dept, Mansoura 35516, Egypt
[2] Cairo Univ, Fac Agr, Vegetable Crops Dept, Giza 12613, Egypt
[3] Damietta Univ, Fac Agr, Vegetables & Floriculture Dept, Dumyat 34517, Egypt
[4] Mansoura Univ, Fac Sci, Bot Dept, Mansoura 35511, Egypt
[5] Univ Tabuk, Fac Sci, Biol Dept, Tabuk 71491, Saudi Arabia
[6] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Biol Dept, Riyadh 11623, Saudi Arabia
[7] Shaqra Univ, Coll Sci & Arts Sajir, POB 33, Shaqra 11961, Saudi Arabia
[8] Univ Tabuk, Univ Coll Tayma, Biol Dept, POB 741, Tabuk 47512, Saudi Arabia
[9] Univ Tabuk, Fac Sci, Dept Biol, POB 741, Tabuk 71491, Saudi Arabia
[10] Taif Univ, Coll Sci, Dept Biol, POB 11099, Taif 21944, Saudi Arabia
来源：
AGRICULTURE-BASEL | 2022年 / 12卷 / 09期
关键词：
Brassica oleracea; quality; antioxidant enzymes; abiotic stress; phenolic enzymes; ESSENTIAL OIL; STRESS; ACID; SILICON; SALT;
D O I：
10.3390/agriculture12091301
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
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 nonreducing 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.
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页数：19
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