Melatonin, a phytohormone for enhancing the accumulation of high-value metabolites and stress tolerance in microalgae: Applications, mechanisms, and challenges

Bioresource Technology, Journal Year: 2023, Volume and Issue: 393, P. 130093 - 130093

Published: Nov. 23, 2023

Language: Английский

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Melatonin as a key regulator in seed germination under abiotic stress

Journal of Pineal Research, Journal Year: 2024, Volume and Issue: 76(1)

Published: Jan. 1, 2024

Abstract Seed germination (SG) is the first stage in a plant's life and has an immense importance sustaining crop production. Abiotic stresses reduce SG by increasing deterioration of seed quality, reducing potential, vigor. Thus, to achieve sustainable level yield, it important improve under abiotic stress conditions. Melatonin (MEL) biomolecule that interplays developmental processes regulates many adaptive responses plants, especially stresses. this review specifically summarizes discusses mechanistic basis MEL‐mediated MEL regulating some stress‐specific common responses. For instance, induced specific include regulation ionic homeostasis, hydrolysis storage proteins salinity stress, C‐repeat binding factors signaling cold starch metabolism high temperature heavy metal activation aquaporins accumulation osmolytes drought stress. On other hand, mediated gibberellins biosynthesis abscisic acid catabolism, redox Ca 2+ are amongst Nonetheless such as endogenous contents, plant species, growth conditions also influence above‐mentioned In conclusion, interacting with different physiological mechanisms.

Language: Английский

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Biosynthetic Pathways of Hormones in Plants

Metabolites, Journal Year: 2023, Volume and Issue: 13(8), P. 884 - 884

Published: July 25, 2023

Phytohormones exhibit a wide range of chemical structures, though they primarily originate from three key metabolic precursors: amino acids, isoprenoids, and lipids. Specific such as tryptophan, methionine, phenylalanine, arginine, contribute to the production various phytohormones, including auxins, melatonin, ethylene, salicylic acid, polyamines. Isoprenoids are foundation five phytohormone categories: cytokinins, brassinosteroids, gibberellins, abscisic strigolactones. Furthermore, lipids, i.e., α-linolenic function precursor for jasmonic acid. The biosynthesis routes these different plant hormones intricately complex. Understanding processes can greatly enhance our knowledge how regulate growth, development, physiology. This review focuses on detailing biosynthetic pathways phytohormones.

Language: Английский

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Melatonin Enhances the Photosynthesis and Antioxidant Enzyme Activities of Mung Bean under Drought and High-Temperature Stress Conditions

Plants, Journal Year: 2023, Volume and Issue: 12(13), P. 2535 - 2535

Published: July 3, 2023

Mung bean, a legume, is sensitive to abiotic stresses at different growth stages, and its yield potential affected by drought high-temperature stress the stage. Melatonin multifunctional hormone that plays vital role in plant defense mechanisms. This study aimed evaluate efficiency of melatonin under individual combined mung bean. An experiment was laid out with five treatments, including an exogenous application 100 µM as seed treatment, foliar spray, combination both treatment well absolute control (ambient condition) (stress without treatment). Stresses were imposed during bean's reproductive stage (31-40 DAS) for ten days. Results revealed significantly decreased chlorophyll index, Fv/Fm ratio, photosynthetic rate, stomatal conductance, transpiration rate through increased reactive oxygen species (ROS) production. Foliar concentration enhanced activity antioxidant enzymes such superoxide dismutase, catalase, ascorbate peroxidase metabolites involved osmoregulation ion homeostasis; thereby, it improves physiological yield-related traits bean

Language: Английский

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Melatonin enhances drought tolerance by affecting jasmonic acid and lignin biosynthesis in wheat (Triticum aestivum L.)

Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 202, P. 107974 - 107974

Published: Aug. 16, 2023

Language: Английский

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Melatonin Mitigates Salt-Induced Growth Inhibition Through the Regulation of Carbohydrate and Nitrogen Metabolism in Tomato Seedlings

Journal of soil science and plant nutrition, Journal Year: 2023, Volume and Issue: 23(3), P. 4290 - 4308

Published: July 5, 2023

Language: Английский

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Carbon monoxide is involved in melatonin-enhanced drought resistance in tomato seedlings by enhancing chlorophyll synthesis pathway

BMC Plant Biology, Journal Year: 2024, Volume and Issue: 24(1)

Published: Feb. 9, 2024

Abstract Background Drought is thought to be a major abiotic stress that dramatically limits tomato growth and production. As signal molecule, melatonin (MT) carbon monoxide (CO) can enhance plant resistance. However, the effect underlying mechanism of CO involving MT-mediated drought resistance in seedling remains unknown. In this study, ( Solanum lycopersicum L. ‘Micro-Tom’) seedlings were used investigate interaction MT response stress. Results The was inhibited significantly under Exogenous or mitigated drought-induced impairment dose-dependent manner, with greatest efficiency provided by 100 500 µM, respectively. But application hemoglobin (Hb, scavenger) restrained positive effects on treatment promoted chlorophyll (Chl a) b) accumulations. Under stress, intermediate products biosynthesis such as protoporphyrin IX (Proto IX), Mg-protoporphyrin (Mg-Proto potochlorophyllide (Pchlide) heme increased CO, but uroporphyrinogen III (Uro III) content decreased MT-treated CO-treated seedlings. Meanwhile, up-regulated expression synthetic-related genes SlUROD , SlPPOX SlMGMT SlFECH SlPOR SlChlS SlCAO . almost reversed Hb. Conclusion results suggested alleviate facilitate synthesis Chl played an essential role MT-enhanced via facilitating pathway.

Language: Английский

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Melatonin-Mediated Molecular Responses in Plants: Enhancing Stress Tolerance and Mitigating Environmental Challenges in Cereal Crop Production

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(8), P. 4551 - 4551

Published: April 21, 2024

Cereal crops are crucial for global food security; however, they susceptible to various environmental stresses that significantly hamper their productivity. In response, melatonin has emerged as a promising regulator, offering potential benefits stress tolerance and crop growth. This review explores the effects of on maize, sorghum, millet, rice, barley, wheat, aiming enhance resilience stress. The application shown outcomes, improving water use efficiency reducing transpiration rates in millet under drought conditions. Furthermore, it enhances salinity heavy metal by regulating activity stress-responsive genes. Similarly, sorghum its resistance high temperatures, low humidity, nutrient deficiency, potentially involving modulation antioxidant defense aspects related photosynthetic Melatonin also exerts protective against drought, salinity, metal, extreme waterlogging barley decreasing reactive oxygen species (ROS) production through system. molecular reactions upregulated photosynthesis, mechanisms, metabolic pathway, genes downregulated susceptibility conclusion, serves versatile tool cereal crops, bolstering promoting sustainable development. Further investigations warranted elucidate underlying mechanisms refine techniques fully harness role systems.

Language: Английский

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Improvement in genomic prediction of maize with prior gene ontology information depends on traits and environmental conditions

The Plant Genome, Journal Year: 2025, Volume and Issue: 18(1)

Published: Jan. 8, 2025

Abstract Classical genomic prediction approaches rely on statistical associations between traits and markers rather than their biological significance. Biologically informed selection of regions can help prioritize polymorphisms by considering underlying processes, making models robust accurate. Gene ontology (GO) terms be used for this purpose, the information integrated into through marker categorization. It allows likely causal to account a certain portion genetic variance independently from remaining markers. We systematically tested list 5110 GO predictive performance physiological (platform traits) productivity (field grain yield) in maize ( Zea mays L.) panel using features best linear unbiased (GFBLUP) model. Predictive abilities were compared classical (GBLUP). gains with categorizing based given term strongly depend trait growth conditions, as useful condition or somewhat similar conditions but not same different condition. Overall, results all GFBLUP GBLUP show that former might less efficient latter. Even though we could identify prior criterion determine which offer benefit trait, posteriori find interpretations results, meaning helpful if more about gene functions relationships was known.

Language: Английский

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Genotype-dependent resilience mediated by melatonin in sweet corn

BMC Plant Biology, Journal Year: 2025, Volume and Issue: 25(1)

Published: Jan. 8, 2025

Water deficits, exacerbated by climate change and unpredictable weather, have become a significant global challenge to agricultural productivity. In this context, exogenous melatonin treatment is well documented as stress alleviator; however, its effects on various biological processes, particularly in less-explored genotypes, remain understudied. This study aimed enhance water deficit resilience sweet corn applying foliar four genotypes-Messenger, Dessert, Royalty, Tyson under two levels of deprivation induced polyethylene glycol at 8% 12% concentrations hydroponic, controlled environment. The treatments were assessed for their impact morphological, physiological, biochemical parameters both normal water-deficit conditions. Under severe (12% PEG), increased root length 75%, peroxidase activity 31% while reducing malondialdehyde content 34% genotype Dessert indicating enhanced antioxidant defense reduced oxidative damage. Likewise stomatal conductance 68%, with increasing specific area 125% deprivation. also improved chlorophyll-a 93% Royalty 37% Tyson, decrease 42% damage addition, photosystem II efficiency (Fv/Fm) all genotypes 27% increase quantum yield across regardless the level. Overall, showed genotype-specific dose-dependent mitigating effects, offering promising strategy improve crop productivity limited environments. These results suggest practical application integrating into sustainable practices, such improving tolerance potentially other crops, maintain adverse climatic

Language: Английский

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