Phytomelatonin: an unexpected molecule with amazing performances in plants

Journal of Experimental Botany, Journal Year: 2022, Volume and Issue: 73(17), P. 5779 - 5800

Published: Jan. 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.

Language: Английский

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Using Exogenous Melatonin, Glutathione, Proline, and Glycine Betaine Treatments to Combat Abiotic Stresses in Crops

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(21), P. 12913 - 12913

Published: Oct. 26, 2022

Abiotic stresses, such as drought, salinity, heat, cold, and heavy metals, are associated with global climate change hamper plant growth development, affecting crop yields quality. However, the negative effects of abiotic stresses can be mitigated through exogenous treatments using small biomolecules. For example, foliar application melatonin provides following: it protects photosynthetic apparatus; increases antioxidant defenses, osmoprotectant, soluble sugar levels; prevents tissue damage reduces electrolyte leakage; improves reactive oxygen species (ROS) scavenging; biomass, maintains redox ion homeostasis, gaseous exchange. Glutathione spray upregulates glyoxalase system, methylglyoxal (MG) toxicity oxidative stress, decreases hydrogen peroxide malondialdehyde accumulation, defense mechanisms, repairs, nitrogen fixation, phytochelatins. The proline enhances other physiological characteristics, osmoprotection, integrity plasma lemma, lipid peroxidation, pigments, phenolic acids, flavonoids, amino stress tolerance, carbon leaf content. glycine betaine growth, osmoprotection osmoregulation, relative water content, net rate, catalase activity, photorespiration, leakage, oxygen-evolving complex, chlorosis. Chemical priming has various important advantages over transgenic technology is typically more affordable for farmers safe plants, people, animals, while being considered environmentally acceptable. helps to improve quality quantity yield. This review summarizes discusses how melatonin, glutathione, proline, help crops combat stresses.

Language: Английский

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Melatonin and Abiotic Stress Tolerance in Crop Plants

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(8), P. 7447 - 7447

Published: April 18, 2023

Increasing food demand by the growing human population and declining crop productivity due to climate change affect global security. To meet challenges, developing improved crops that can tolerate abiotic stresses is a priority. Melatonin in plants, also known as phytomelatonin, an active component of various cellular mechanisms alleviates oxidative damage hence supporting plant survive stress conditions. Exogenous melatonin strengthens this defence mechanism enhancing detoxification reactive by-products, promoting physiological activities, upregulating stress-responsive genes alleviate during stress. In addition its well-known antioxidant activity, protects against regulating hormones, activating ER genes, increasing protein homoeostasis, heat shock transcription factors proteins. Under stress, enhances unfolded response, endoplasmic reticulum-associated degradation, autophagy, which ultimately protect cells from programmed cell death promotes repair resulting increased survival.

Language: Английский

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The molecular paradigm of reactive oxygen species (ROS) and reactive nitrogen species (RNS) with different phytohormone signaling pathways during drought stress in plants

Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 206, P. 108259 - 108259

Published: Dec. 7, 2023

Language: Английский

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Exogenous melatonin induces salt and drought stress tolerance in rice by promoting plant growth and defense system

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Jan. 12, 2024

Abstract Due to global climate change, crops are certainly confronted with a lot of abiotic and biotic stress factors during their growth that cause serious threat development overall productivity. Among different stresses, salt drought considered the most devastating stressors impact on crop’s yield stability. Here, current study aimed elucidate how melatonin works in regulating plant biomass, oxidative stress, antioxidant defense system, as well expression genes related rice plants. Eight groups plants (3 replicates, 5 each) underwent varied treatments: control, melatonin, salt, drought, + melatonin. Melatonin (100 µM) was alternately applied week before exposure; received 100 mM NaCl every 3 days for weeks, involved 10% PEG. Young leaves were randomly sampled from each group. The results showed treatment markedly reduces damage by promoting root, shoot length, fresh dry weight, increasing chlorophyll contents, inhibiting excessive production markers. Salt significantly decreased water balance, damaged cell membrane reducing relative contents electrolyte leakage. However, treated high low Under conditions, exogenous application boosted level responsive like OsSOS , OsNHX OsHSF OsDREB Taken together, our reveal increases tolerance plants, suppressing ROS accumulation, elevating antioxidants efficiency, up-regulating genes.

Language: Английский

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The multifaceted role of sodium nitroprusside in plants: crosstalk with phytohormones under normal and stressful conditions

Plant Growth Regulation, Journal Year: 2024, Volume and Issue: 103(3), P. 453 - 470

Published: Feb. 6, 2024

Language: Английский

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Approaches for the amelioration of adverse effects of drought stress on soybean plants: from physiological responses to agronomical, molecular, and cutting-edge technologies

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Language: Английский

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Melatonin Ameliorates Thermotolerance in Soybean Seedling through Balancing Redox Homeostasis and Modulating Antioxidant Defense, Phytohormones and Polyamines Biosynthesis

Molecules, Journal Year: 2021, Volume and Issue: 26(17), P. 5116 - 5116

Published: Aug. 24, 2021

Global warming is impacting the growth and development of economically important but sensitive crops, such as soybean (Glycine max L.). Using pleiotropic signaling molecules, melatonin can relieve negative effects high temperature by enhancing plant well modulating defense system against abiotic stresses. However, less known about how regulates phytohormones polyamines during heat stress. Our results showed that significantly increased ROS decreased photosynthesis efficiency in plants. Conversely, pretreatment with photosynthetic pigments (chl a chl b) reduced oxidative stress via scavenging hydrogen peroxide superoxide reducing MDA electrolyte leakage contents. The inherent responses were further strengthened enhanced activities antioxidants upregulation expression ascorbate-glutathione cycle genes. Melatonin mitigates increasing several biochemicals (phenolics, flavonoids, proline), endogenous (spermine, spermidine, putrescine). Furthermore, positive treatment also correlated abscisic acid content, down-regulation gmNCED3, up-regulation catabolic genes (CYP707A1 CYP707A2) Contrarily, an increase salicylic up-regulated defense-related gene PAL2 revealed. In addition, induced shock protein 90 (gmHsp90) transcription factor (gmHsfA2), suggesting promotion detoxification peroxide-mediated pathway. conclusion, exogenous improves thermotolerance plants enhances activating antioxidant mechanisms, interacting hormones, reprogramming biochemical metabolism.

Language: Английский

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Functions of Melatonin during Postharvest of Horticultural Crops

Plant and Cell Physiology, Journal Year: 2021, Volume and Issue: 63(12), P. 1764 - 1786

Published: Dec. 14, 2021

Melatonin, a tryptophan-derived molecule, is endogenously generated in animal, plant, fungal and prokaryotic cells. Given its antioxidant properties, it involved myriad of signaling functions associated with various aspects plant growth development. In higher plants, melatonin (Mel) interacts regulators such as phytohormones, well reactive oxygen nitrogen species including hydrogen peroxide (H2O2), nitric oxide (NO) sulfide (H2S). It shows great potential biotechnological tool to alleviate biotic abiotic stress, delay senescence conserve the sensory nutritional quality postharvest horticultural products which are considerable economic importance worldwide. This review provides comprehensive overview biochemistry Mel, whose endogenous induction exogenous application can play an important role enhancing marketability hence earnings from crops.

Language: Английский

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Crosstalk between Melatonin and Reactive Oxygen Species in Plant Abiotic Stress Responses: An Update

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(10), P. 5666 - 5666

Published: May 18, 2022

Melatonin acts as a multifunctional molecule that takes part in various physiological processes, especially the protection against abiotic stresses, such salinity, drought, heat, cold, heavy metals, etc. These stresses typically elicit reactive oxygen species (ROS) accumulation. Excessive ROS induce oxidative stress and decrease crop growth productivity. Significant advances melatonin initiate complex antioxidant system modulates homeostasis plants. Numerous evidences further reveal often cooperates with other signaling molecules, ROS, nitric oxide (NO), hydrogen sulfide (H2S). The interaction among melatonin, NO, H2S, orchestrates responses to via networks, thus conferring plant tolerance. In this review, we summarize roles of establishing redox through current progress interactions higher stresses. We highlight vital role respiratory burst oxidase homologs (RBOHs) during these processes. complicated integration occurs between plants is also discussed.

Language: Английский

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