Melatonin Improves Drought Stress Tolerance of Tomato by Modulating Plant Growth, Root Architecture, Photosynthesis, and Antioxidant Defense System

Antioxidants, Год журнала: 2022, Номер 11(2), С. 309 - 309

Опубликована: Фев. 3, 2022

Tomato is an important vegetable that highly sensitive to drought (DR) stress which impairs the development of tomato seedlings. Recently, melatonin (ME) has emerged as a nontoxic, regulatory biomolecule regulates plant growth and enhances DR tolerance mechanism in plants. The present study was conducted examine defensive role ME photosynthesis, root architecture, antioxidant enzymes' activities seedlings subjected stress. Our results indicated strongly suppressed biomass production, inhibited negatively affected morphology, reduced photosynthetic pigments Per contra, soluble sugars, proline, ROS (reactive oxygen species) were suggested be improved under Conversely, (100 µM) pretreatment detrimental-effect by restoring chlorophyll content, gas exchange parameters attributes compared with DR-group only. Moreover, supplementation also mitigated enzymes [APX (ascorbate peroxidase), CAT (catalase), DHAR (dehydroascorbate reductase), GST (glutathione S-transferase), GR MDHAR (monodehydroascorbate POD (peroxidase), SOD (superoxide dismutase)], non-enzymatic [AsA (ascorbate), DHA (dehydroascorbic acid), GSH (glutathione), GSSG, (oxidized glutathione)] activities, oxidative damage [EL (electrolyte leakage), H2O2 (hydrogen peroxide), MDA (malondialdehyde), O2•- ion)] osmoregulation (soluble sugars proline) seedlings, regulating gene expression for SOD, CAT, APX, GR, POD, GST, DHAR, MDHAR. These findings determine could efficiently improve growth, characteristics, leaf photosynthesis machinery thereby increasing seedlings' adaptability

Язык: Английский

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Phytomelatonin: an unexpected molecule with amazing performances in plants

Journal of Experimental Botany, Год журнала: 2022, Номер 73(17), С. 5779 - 5800

Опубликована: Янв. 12, 2022

Phytomelatonin, a multifunctional molecule that has been found to be present in all plants examined date, an important role as modulatory agent (a biostimulator) improves plant tolerance both biotic and abiotic stress. We review of phytomelatonin considers its roles metabolism particular interactions with hormone network. In the primary plants, melatonin rate efficiency photosynthesis, well related factors such stomatal conductance, intercellular CO2, Rubisco activity. It also shown down-regulate some senescence transcription factors. Melatonin up-regulates many enzyme transcripts carbohydrates (including sucrose starch), amino acids, lipid metabolism, optimizing N, P, S uptake. With respect secondary clear increases polyphenol, glucosinolate, terpenoid, alkaloid contents have described numerous melatonin-treated plants. Generally, most genes these biosynthesis pathways up-regulated by melatonin. The great regulatory capacity is result control redox networks. acts master regulator, up-/down-regulating different levels signalling, key player homeostasis. counteract diverse critical situations pathogen infections stresses, provide varying degrees tolerance. propose possible future applications for crop improvement post-harvest product preservation.

Язык: Английский

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Melatonin: First-line soldier in tomato under abiotic stress current and future perspective

Plant Physiology and Biochemistry, Год журнала: 2022, Номер 185, С. 188 - 197

Опубликована: Июнь 6, 2022

Язык: Английский

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Melatonin Mitigates Cadmium Toxicity by Promoting Root Architecture and Mineral Homeostasis of Tomato Genotypes

Journal of soil science and plant nutrition, Год журнала: 2022, Номер 22(1), С. 1112 - 1128

Опубликована: Янв. 27, 2022

Язык: Английский

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Insight into melatonin-mediated response and signaling in the regulation of plant defense under biotic stress

Plant Molecular Biology, Год журнала: 2021, Номер 109(4-5), С. 385 - 399

Опубликована: Ноя. 16, 2021

Язык: Английский

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Phytohormones Mediated Modulation of Abiotic Stress Tolerance and Potential Crosstalk in Horticultural Crops

Journal of Plant Growth Regulation, Год журнала: 2022, Номер 42(8), С. 4724 - 4750

Опубликована: Сен. 30, 2022

Язык: Английский

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Combined effects of zinc oxide nanoparticles and melatonin on wheat growth, chlorophyll contents, cadmium (Cd) and zinc uptake under Cd stress

The Science of The Total Environment, Год журнала: 2022, Номер 864, С. 161061 - 161061

Опубликована: Дек. 21, 2022

Язык: Английский

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Melatonin-Polyamine Interplay in the Regulation of Stress Responses in Plants

Journal of Plant Growth Regulation, Год журнала: 2022, Номер 42(8), С. 4834 - 4850

Опубликована: Июль 16, 2022

Язык: Английский

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Nickel toxicity alters growth patterns and induces oxidative stress response in sweetpotato

Frontiers in Plant Science, Год журнала: 2022, Номер 13

Опубликована: Ноя. 10, 2022

Nickel (Ni) contaminated soil is a persistent risk to plant growth and production worldwide. Therefore, explore the Ni toxicity levels in sweetpotato areas, we investigated influence of different treatments (0, 7.5, 15, 30, 60 mg L -1 ) for 15 days on phenotype, uptake, relative water content, gas exchange, photosynthetic pigments, oxidative stress, osmolytes, antioxidants, enzymes plants. The results presented that at higher (30 substantially reduced growth, biomass, root morphological traits. Pearson correlation analysis suggested causes injuries as augmentation hydrogen peroxide (H 2 O malonaldehyde (MDA) RWC, pigment. Furthermore, this study revealed could tolerate moderate treatment (up by reducing stress. also indicated increase activities mentioned not sufficient overcome toxicity. Based these results, suggest using low Ni-contaminated better be used phytoremediator soil.

Язык: Английский

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Melatonin as a Key Factor for Regulating and Relieving Abiotic Stresses in Harmony with Phytohormones in Horticultural Plants — a Review

Journal of soil science and plant nutrition, Год журнала: 2023, Номер 24(1), С. 54 - 73

Опубликована: Дек. 26, 2023

Abstract Melatonin was found in plants the late 1990s, but its function, signaling, and interaction with other phytohormones still unclear. research has increased substantially recent years, including reports on impact of this putative plant hormone under biotic abiotic stress situations. Temperature extremes, salt, drought, hypoxia or anoxia, nutrient deficiency, herbicides, UV radiation stress, heavy metal toxicity are all important obstacles to horticulture crop production worldwide. To deal these environmental challenges, have evolved complex signaling networks. Phytohormones essential for controlling growth, development, responses. Melatonin, a pleiotropic chemical present variety species, recently emerged as powerful regulator tolerance. The purpose review is investigate interplay between melatonin control responses horticultural crops. We explore interactions several various stresses.

Язык: Английский

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