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Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize
Chemical and Biological Technologies in Agriculture ( IF 6.6 ) Pub Date : 2022-01-11 , DOI: 10.1186/s40538-021-00272-1
Shakeel Ahmad 1 , Guo Yun Wang 1 , Ihsan Muhammad 1 , Saqib Farooq 1 , Muhammad Zeeshan 1 , Saif Ullah 1 , Jing Hua Huang 1 , Xun Bo Zhou 1 , Muhammad Kamran 2 , Irshad Ahmad 2 , Tehseen Javed 3
Affiliation  

Melatonin played an essential role in numerous vital life processes of animals and captured the interests of plant biologists because of its potent role in plants as well. As far as its possible contribution to photoperiodic processes, melatonin is believed to act as a growth regulator and a direct free radical scavenger/indirect antioxidant. The objective of this study to identify a precise melatonin concentration for a particular application method to improve plant growth requires identification and clarification. This work establishes unique findings by optimizing melatonin concentration in alleviating the detrimental effects of drought stress in maize. Maize plants were subjected to drought stress (40–45% FC) after treatments of melatonin soil drenching at different concentrations (50, 100, and 150 µM) to consider the changes of growth attribute, chlorophyll contents, photosynthetic rate, relative water content (RWC), chloroplast ultrastructure, endogenous hormonal mechanism, and grain yield. Our results showed that the application of melatonin treatments remarkably improved the plant growth attributes, chlorophyll contents, photosynthetic rate, RWC, hormonal mechanism, and grain yield plant−1 under drought conditions at a variable rate. Our current findings hereby confirmed the mitigating potential of melatonin application 100 µM for drought stress by maintaining plant growth, hormone content, and grain yield of maize. We conclude that the application of melatonin to maize is effective in reducing drought stress tolerance.

中文翻译:

褪黑激素通过调控光合效率、叶绿体超微结构和内源激素调节玉米耐旱性的应用

褪黑激素在动物的许多重要生命过程中发挥着重要作用,并因其在植物中的强大作用而引起了植物生物学家的兴趣。就其对光周期过程的可能贡献而言,褪黑激素被认为是一种生长调节剂和一种直接自由基清除剂/间接抗氧化剂。本研究的目的是确定用于改善植物生长的特定应用方法的精确褪黑激素浓度,需要确定和澄清。这项工作通过优化褪黑激素浓度来减轻玉米干旱胁迫的不利影响,从而确立了独特的发现。在不同浓度(50、100、和 150 µM) 考虑生长属性、叶绿素含量、光合速率、相对含水量 (RWC)、叶绿体超微结构、内源激素机制和籽粒产量的变化。我们的研究结果表明,褪黑激素处理的应用显着改善了干旱条件下植物生长属性、叶绿素含量、光合速率、RWC、激素机制和粮食产量植物-1。我们目前的研究结果在此证实了通过维持玉米的植物生长、激素含量和谷物产量来减轻 100 µM 褪黑激素对干旱胁迫的影响。我们得出结论,将褪黑激素应用于玉米可有效降低干旱胁迫耐受性。内源性激素机制和粮食产量。我们的研究结果表明,褪黑激素处理的应用显着改善了干旱条件下植物生长属性、叶绿素含量、光合速率、RWC、激素机制和粮食产量植物-1。我们目前的研究结果在此证实了通过维持玉米的植物生长、激素含量和谷物产量来减轻 100 µM 褪黑激素对干旱胁迫的影响。我们得出结论,将褪黑激素应用于玉米可有效降低干旱胁迫耐受性。内源性激素机制和粮食产量。我们的研究结果表明,褪黑激素处理的应用显着改善了干旱条件下植物生长属性、叶绿素含量、光合速率、RWC、激素机制和粮食产量植物-1。我们目前的研究结果在此证实了通过维持玉米的植物生长、激素含量和谷物产量来减轻 100 µM 褪黑激素对干旱胁迫的影响。我们得出结论,将褪黑激素应用于玉米可有效降低干旱胁迫耐受性。和粮食产量植物-1 在干旱条件下以可变的速率。我们目前的研究结果在此证实了通过维持玉米的植物生长、激素含量和谷物产量来减轻 100 µM 褪黑激素对干旱胁迫的影响。我们得出结论,将褪黑激素应用于玉米可有效降低干旱胁迫耐受性。和粮食产量植物-1 在干旱条件下以可变的速率。我们目前的研究结果在此证实了通过维持玉米的植物生长、激素含量和谷物产量来减轻 100 µM 褪黑激素对干旱胁迫的影响。我们得出结论,将褪黑激素应用于玉米可有效降低干旱胁迫耐受性。
更新日期:2022-01-11
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