Exogenous application of melatonin and jasmonic acid protects the sugar beet from heat stress by modulating the enzymatic antioxidants deference mechanism and accumulation of organic osmolytes

IF 2.4 4区 生物学 Q2 PLANT SCIENCES
Muhammad Irfan, Ahmed Abou El-Yazied, Muhammad Sheeraz, Shabir Hussain, Abdul Sattar, Qasim Ali, Hany G. Abd El-Gawad, Fahad Mohammed Alzuaibr, Maha Mohammed Alharbi, Siham M. Al-Balawi, Doaa Bahaa Eldin Darwish, Eldessoky S. Dessoky, Mohamed F. M. Ibrahim
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Abstract

Heat stress reduces the growth and productivity of agronomic crops and considered as main hazard for sustainable farming. Melatonin and jasmonic acid play an essential role in mitigating the adversities of abiotic stresses. Therefore; current experiment was performed to assess the potential of sole and collective application of melatonin and jasmonic acid to mitigate the adversities of high temperature on sugar beet. Experimental treatments consisted of control (Ck), water spray, melatonin (150 µM), jasmonic acid (150 µM) and melatonin (150 µM) + jasmonic acid (150 µM) applied on sugar beet plants grown under two temperature levels; normal condition and heat stress (inside sheet). Results indicated that high temperature remarkably decreased leaf chlorophyll pigments, and relative water contents while increased electrolyte leakage, hydrogen peroxide, thiobarbituric acid reactive substances (TBARS), activities of antioxidant enzymes, and concentration of organic osmolytes in sugar beet leaves. However; separate and collective application of melatonin and jasmonic acid alleviate negative impact of high temperature by improving photosynthetic pigments, gas exchange attributes and concentration of osmolytes in the leaves of sugar beet. Application of melatonin + jasmonic acid enhanced the activities of antioxidants which reduced the harmful impact of ROS. Moreover; foliar application of melatonin + jasmonic acid considerably increased the root yield and yield attributes and sugar recovery in heat stress condition. It was concluded that combined application of melatonin + jasmonic alleviate the adversities of heat stress by enhancing the leaves chlorophyll contents, gas exchange attributes, osmo-protectants, activities of enzymatic antioxidants. Finding of the study revealed that collective applied melatonin + jasmonic acid found to be useful techniques for cultivation of sugar beet at high temperature stress.

外源应用褪黑素和茉莉酸通过调节酶促抗氧化剂的差异机制和有机渗透物的积累来保护甜菜免受热应激
热应激降低了农作物的生长和生产力,被认为是可持续农业的主要危害。褪黑素和茉莉酸在缓解非生物胁迫的逆境中起着重要作用。因此;本试验旨在评估褪黑素和茉莉酸单独和集体施用对甜菜高温胁迫的影响。试验处理包括对照(Ck)、喷水、褪黑素(150µM)、茉莉酸(150µM)和褪黑素(150µM) +茉莉酸(150µM)两种温度水平下甜菜植株的处理;正常状态和热应力(内板)。结果表明,高温显著降低甜菜叶片叶绿素色素和相对含水量,增加甜菜叶片电解质泄漏、过氧化氢、硫代巴比妥酸活性物质(TBARS)、抗氧化酶活性和有机渗透物浓度。然而;褪黑素和茉莉酸单独或集体施用可通过改善甜菜叶片光合色素、气体交换特性和渗透物浓度来缓解高温的负面影响。褪黑素+茉莉酸的应用增强了抗氧化剂的活性,减少了活性氧的有害影响。此外;在热胁迫条件下,叶面施褪黑素+茉莉酸显著提高了根产量、产量属性和糖恢复。综上所述,褪黑素+茉莉素联合施用可通过提高叶片叶绿素含量、气体交换特性、渗透保护剂和酶抗氧化剂活性来缓解热胁迫。研究结果表明,联合施用褪黑素+茉莉酸是高温胁迫下甜菜栽培的有效技术。
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来源期刊
Acta Physiologiae Plantarum
Acta Physiologiae Plantarum 生物-植物科学
CiteScore
5.10
自引率
3.80%
发文量
125
审稿时长
3.1 months
期刊介绍: Acta Physiologiae Plantarum is an international journal established in 1978 that publishes peer-reviewed articles on all aspects of plant physiology. The coverage ranges across this research field at various levels of biological organization, from relevant aspects in molecular and cell biology to biochemistry. The coverage is global in scope, offering articles of interest from experts around the world. The range of topics includes measuring effects of environmental pollution on crop species; analysis of genomic organization; effects of drought and climatic conditions on plants; studies of photosynthesis in ornamental plants, and more.
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