Melatonin: A New Plant Hormone and/or a Plant Master Regulator?

Trends in Plant Science, Год журнала: 2018, Номер 24(1), С. 38 - 48

Опубликована: Ноя. 13, 2018

Язык: Английский

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Melatonin biosynthesis in plants: multiple pathways catalyze tryptophan to melatonin in the cytoplasm or chloroplasts

Journal of Pineal Research, Год журнала: 2016, Номер 61(4), С. 426 - 437

Опубликована: Сен. 7, 2016

Melatonin is an animal hormone as well a signaling molecule in plants. It was first identified plants 1995, and almost all enzymes responsible for melatonin biosynthesis had already been characterized these species. from tryptophan requires four-step reactions. However, six genes, that is, TDC, TPH, T5H, SNAT, ASMT, COMT, have implicated the synthesis of plants, suggesting presence multiple pathways. Two major pathways proposed based on enzyme kinetics: One tryptophan/tryptamine/serotonin/N-acetylserotonin/melatonin pathway, which may occur under normal growth conditions; other tryptophan/tryptamine/serotonin/5-methoxytryptamine/melatonin when produce large amounts serotonin, example, upon senescence. The biosynthetic capacity associated with conversion to serotonin much higher than melatonin, yields low level Many intermediates are produced various subcellular compartments, such cytoplasm, endoplasmic reticulum, chloroplasts, either facilitates or impedes subsequent enzymatic steps. Depending pathways, final sites vary at cytoplasm differentially affect mode action

Язык: Английский

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Responses of Plant Proteins to Heavy Metal Stress—A Review

Frontiers in Plant Science, Год журнала: 2017, Номер 8

Опубликована: Сен. 5, 2017

Plants respond to environmental pollutants such as heavy metal(s) by triggering the expression of genes that encode proteins involved in stress response. Toxic metal ions profoundly affect cellular protein homeostasis interfering with folding process and aggregation nascent or non-native leading decreased cell viability. However, plants possess a range ubiquitous surveillance systems enable them efficiently detoxify metals towards enhanced tolerance stress. As constitute major workhorses living cells, chelation cytosol phytochelatins metallothioneins followed compartmentalization vacuoles well repair stress-damaged removal degradation fail achieve their native conformations are critical for plant In this review, we provide broad overview recent advances research regards plants. We also discuss how maintain functional healthy proteomes survival under capricious surroundings.

Язык: Английский

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Melatonin-mediated nitric oxide improves tolerance to cadmium toxicity by reducing oxidative stress in wheat plants

Chemosphere, Год журнала: 2019, Номер 225, С. 627 - 638

Опубликована: Март 6, 2019

Язык: Английский

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Melatonin: A master regulator of plant development and stress responses

Journal of Integrative Plant Biology, Год журнала: 2020, Номер 63(1), С. 126 - 145

Опубликована: Июль 17, 2020

Melatonin is a pleiotropic molecule with multiple functions in plants. Since the discovery of melatonin plants, numerous studies have provided insight into biosynthesis, catabolism, and physiological biochemical this important molecule. Here, we describe biosynthesis from tryptophan, as well its various degradation pathways The identification putative receptor plants has led to hypothesis that hormone involved regulating plant growth, aerial organ development, root morphology, floral transition. universal antioxidant activity role preserving chlorophyll might explain anti-senescence capacity aging leaves. An impressive amount research focused on modulating postharvest fruit ripening by expression ethylene-related genes. Recent evidence also indicated plant's response biotic stress, cooperating other phytohormones well-known molecules such reactive oxygen species nitric oxide. Finally, great progress been made towards understanding how alleviates effects abiotic stresses, including salt, drought, extreme temperature, heavy metal stress. Given diverse roles, propose master regulator

Язык: Английский

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Melatonin regulates the functional components of photosynthesis, antioxidant system, gene expression, and metabolic pathways to induce drought resistance in grafted Carya cathayensis plants

The Science of The Total Environment, Год журнала: 2020, Номер 713, С. 136675 - 136675

Опубликована: Янв. 13, 2020

Язык: Английский

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A review on bioremediation approach for heavy metal detoxification and accumulation in plants

Environmental Pollution, Год журнала: 2022, Номер 301, С. 119035 - 119035

Опубликована: Фев. 20, 2022

Язык: Английский

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Melatonin pretreatment improves vanadium stress tolerance of watermelon seedlings by reducing vanadium concentration in the leaves and regulating melatonin biosynthesis and antioxidant-related gene expression

Journal of Plant Physiology, Год журнала: 2017, Номер 220, С. 115 - 127

Опубликована: Ноя. 21, 2017

Язык: Английский

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Melatonin alleviates nickel phytotoxicity by improving photosynthesis, secondary metabolism and oxidative stress tolerance in tomato seedlings

Ecotoxicology and Environmental Safety, Год журнала: 2020, Номер 197, С. 110593 - 110593

Опубликована: Апрель 12, 2020

Язык: Английский

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Phytomelatonin: a universal abiotic stress regulator

Journal of Experimental Botany, Год журнала: 2017, Номер 69(5), С. 963 - 974

Опубликована: Дек. 19, 2017

Melatonin, a derivative of tryptophan, was first detected in plant species 1995 and it has been shown to be diverse regulator during growth development, stress responses. Recently, great progress made towards determining the detailed functions melatonin responses abiotic stress. Melatonin priming improves tolerance cold, heat, salt, drought stresses through regulation genes involved DREB/CBF, HSF, SOS, ABA pathways, respectively. As scavenger free radicals, also directly detoxifies reactive oxygen species, thus alleviating membrane oxidation. Abiotic stress-inhibited photosynthesis is partially recovered metabolites accumulate presence melatonin, leading improved growth, delayed leaf senescence, increased tolerance. In this review, we summarize interactions with phytohormones regulate downstream gene expression, protein stabilization, epigenetic modification plants. Finally, consider need for, approaches to, identification receptors components signaling transduction pathways.

Язык: Английский

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