Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize

Abstract Background 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 reg...

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Main Authors: Shakeel Ahmad, Guo Yun Wang, Ihsan Muhammad, Saqib Farooq, Muhammad Kamran, Irshad Ahmad, Muhammad Zeeshan, Tehseen Javed, Saif Ullah, Jing Hua Huang, Xun Bo Zhou
Format: Article
Language:English
Published: SpringerOpen 2022-01-01
Series:Chemical and Biological Technologies in Agriculture
Subjects:
Online Access:https://doi.org/10.1186/s40538-021-00272-1
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author Shakeel Ahmad
Guo Yun Wang
Ihsan Muhammad
Saqib Farooq
Muhammad Kamran
Irshad Ahmad
Muhammad Zeeshan
Tehseen Javed
Saif Ullah
Jing Hua Huang
Xun Bo Zhou
author_facet Shakeel Ahmad
Guo Yun Wang
Ihsan Muhammad
Saqib Farooq
Muhammad Kamran
Irshad Ahmad
Muhammad Zeeshan
Tehseen Javed
Saif Ullah
Jing Hua Huang
Xun Bo Zhou
author_sort Shakeel Ahmad
collection DOAJ
description Abstract Background 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. Methods 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. Results 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. Conclusion 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. Graphical Abstract
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spelling doaj.art-817605f4b99c4e62b6443c30287291c62022-12-21T19:22:14ZengSpringerOpenChemical and Biological Technologies in Agriculture2196-56412022-01-019111410.1186/s40538-021-00272-1Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maizeShakeel Ahmad0Guo Yun Wang1Ihsan Muhammad2Saqib Farooq3Muhammad Kamran4Irshad Ahmad5Muhammad Zeeshan6Tehseen Javed7Saif Ullah8Jing Hua Huang9Xun Bo Zhou10Guangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityGuangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityGuangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityGuangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityCollege of Pastoral Agriculture Science and Technology, Lanzhou UniversityCollege of Pastoral Agriculture Science and Technology, Lanzhou UniversityGuangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityRemote Sensing Information and Digital Earth Center, School of Computer Science and Technology, Qingdao UniversityGuangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityGuangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityGuangxi Colleges and Universities Key Laboratory of Crop Cultivation and Tillage, Agricultural College of Guangxi UniversityAbstract Background 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. Methods 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. Results 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. Conclusion 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. Graphical Abstracthttps://doi.org/10.1186/s40538-021-00272-1MelatoninPhotosynthetic pigmentsChloroplast ultrastructureHormone contentsMaize yieldDrought stress
spellingShingle Shakeel Ahmad
Guo Yun Wang
Ihsan Muhammad
Saqib Farooq
Muhammad Kamran
Irshad Ahmad
Muhammad Zeeshan
Tehseen Javed
Saif Ullah
Jing Hua Huang
Xun Bo Zhou
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
Melatonin
Photosynthetic pigments
Chloroplast ultrastructure
Hormone contents
Maize yield
Drought stress
title Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize
title_full Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize
title_fullStr Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize
title_full_unstemmed Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize
title_short Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize
title_sort application of melatonin mediated modulation of drought tolerance by regulating photosynthetic efficiency chloroplast ultrastructure and endogenous hormones in maize
topic Melatonin
Photosynthetic pigments
Chloroplast ultrastructure
Hormone contents
Maize yield
Drought stress
url https://doi.org/10.1186/s40538-021-00272-1
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