Plant growth stage and melatonin concentration dependency together drive the metal-nutrient dynamics of rice in paddy soil

International Journal of Phytoremediation, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 14

Published: Feb. 5, 2025

Foliar application of melatonin shows promise in alleviating oxidative stress rice, though its influence on metal-nutrient dynamics remains unclear. This study investigated the optimal dosage, timing, and concentration for regulating elemental uptake, maintaining redox homeostasis, managing nutrient rice cultivated cadmium (Cd) selenium (Se)-enriched soils. Melatonin (50, 200 µM) was applied at vegetative stages: jointing (J) tillering (T). At J stage, improved biomass photosynthetic pigments but inadequately regulated due to incomplete homeostasis. However, applying µM during T stage significantly (p < 0.05) enhanced Se iron (Fe) root uptake by 48% 11%, respectively, while also improving shoot translocation. Notably, M200 reduced chromium (Cr) translocation shoots 82% 0.05), thereby increasing retention capacity. Additionally, 50 Cd 54% increased 53% toxicity enhancing detoxification response aerial tissues. markers, proline levels, antioxidative enzyme activities, with showing pronounced effects. strategy represents a promising technological approach homeostasis cultivation.

Language: Английский

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Melatonin supplementation combats nickel-induced phytotoxicity in Trigonella foenum-graecum L. plants through metal accumulation reduction, upregulation of NO generation, antioxidant defence machinery and secondary metabolites

Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 202, P. 107981 - 107981

Published: Aug. 21, 2023

Language: Английский

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SlTDC1 Overexpression Promoted Photosynthesis in Tomato under Chilling Stress by Improving CO2 Assimilation and Alleviating Photoinhibition

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(13), P. 11042 - 11042

Published: July 3, 2023

Chilling causes a significant decline in photosynthesis tomato plants. Tomato tryptophan decarboxylase gene 1 (SlTDC1) is the first rate-limiting for melatonin (MT) biosynthesis and involved regulation of under various abiotic stresses. However, it not clear whether SlTDC1 participates chilling stress. Here, we obtained overexpression transgenic seedlings, which showed higher mRNA abundance MT content compared with wild type (WT). The results that obviously alleviated damage to seedlings terms lower electrolyte leakage rate hydrogen peroxide content, WT after 2 d Moreover, notably increased stress, was related chlorophyll normal chloroplast structure, protein level Rubisco RCA, as well carbon metabolic capacity, WT. In addition, found SlTDC1-overexpressing Wk (damage degree OEC on PSII donor side), φEo (quantum yield electron transport reaction center), PIABS (photosynthetic performance index) than low-temperature implying decreased center donor-side receptor-side promoted PSI activity, energy absorption distribution, relieve photoinhibition induced by Our support notion plays vital role

Language: Английский

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Melatonin in plants: A pleiotropic molecule for abiotic stresses and pathogens infection

Scientia Horticulturae, Journal Year: 2023, Volume and Issue: 322, P. 112387 - 112387

Published: Aug. 20, 2023

Language: Английский

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Melatonin: Current status and future perspectives in horticultural plants

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: March 23, 2023

Global warming in this century increases incidences of various abiotic stresses, restricting plant growth and productivity posing a severe threat to global food production security. Different phytohormones are produced by plants mitigate the adverse effects these stresses. One such phytohormone is melatonin (MEL), which, being potential bio-stimulator, helps govern wide array functions horticultural crops. Recent advancements have determined role MEL plants’ responses enhances physiological as seed germination, development, seedling growth, root system architecture, photosynthetic efficiency. The function stressful environments regulate enzymatic non-enzymatic antioxidant activity, thus playing substantial scavenging reactive oxygen species (ROS). Additionally, MEL, regulator aids promoting tolerance stress, mainly through improvements nutrient uptake, osmolyte production, cellular membrane stability. This review, therefore, focuses on possible induction different stresses Therefore, review would help readers learn more about altered provide new suggestions how knowledge could be used develop stress tolerance.

Language: Английский

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