Diet promotes sleep duration and quality

Nutrition Research, Год журнала: 2012, Номер 32(5), С. 309 - 319

Опубликована: Апрель 25, 2012

Язык: Английский

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Melatonin promotes ripening and improves quality of tomato fruit during postharvest life

Journal of Experimental Botany, Год журнала: 2014, Номер 66(3), С. 657 - 668

Опубликована: Авг. 21, 2014

In this study, the effect of melatonin on postharvest ripening and quality improvement tomato fruit was carried out. The tomatoes were immersed in exogenous for 2h, then related physiological indicators expression genes during post-harvest life evaluated. Compared with control check (CK), 50 µM treatment significantly increased lycopene levels by 5.8-fold. Meanwhile, key involved colour development, including phytoene synthase1 (PSY1) carotenoid isomerase (CRTISO), showed a 2-fold increase levels. rate water loss from also 8.3%, aquaporin genes, such as SlPIP12Q, SlPIPQ, SlPIP21Q, SlPIP22, up-regulated 2- to 3-fold under treatment. addition, enhanced softening, water-soluble pectin 22.5%, decreased protopectin 19.5%. cell wall modifying proteins polygalacturonase (PG), esterase1 (PE1), β-galactosidase (TBG4), expansin1 (Exp1) Melatonin ethylene production 27.1%, accelerated climacteric phase, influenced signalling pathway. Alteration correlated altered 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (ACS4) expression. signal transduction-related NR, SlETR4, SlEIL1, SlEIL3, SlERF2, melatonin. biosynthesis, perception, may contribute tomato. This research promote application well other horticultural productions future.

Язык: Английский

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Arabidopsis Transcriptome Analysis Reveals Key Roles of Melatonin in Plant Defense Systems

PLoS ONE, Год журнала: 2014, Номер 9(3), С. e93462 - e93462

Опубликована: Март 28, 2014

Melatonin is a ubiquitous molecule and exists across kingdoms including plant species. Studies on melatonin in plants have mainly focused its physiological influence growth development, biosynthesis. Much less attention has been drawn to affect genome-wide gene expression. To comprehensively investigate the role(s) of at genomics level, we utilized mRNA-seq technology analyze Arabidopsis subjected 16-hour 100 pM (low) 1 mM (high) treatment. The expression profiles were analyzed identify differentially expressed genes. treatment significantly affected only 81 genes with 51 down-regulated 30 up-regulated. However, altered 1308 566 up-regulated 742 down-regulated. Not all by low high melatonin, indicating different roles regulation development under concentrations. Furthermore, large number involved stress defense. Transcript levels for many receptors, kinases, stress-associated calcium signals majority transcription factors identified also Additionally, most ABA, ET, SA JA pathways up-regulated, while pertaining auxin responses signaling, peroxidases, those associated cell wall synthesis modifications mostly Our results indicate critical defense against various environmental stresses, provide framework functional analysis melatonin-mediated signaling pathways.

Язык: Английский

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The changing biological roles of melatonin during evolution: from an antioxidant to signals of darkness, sexual selection and fitness

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2009, Номер 85(3), С. 607 - 623

Опубликована: Дек. 21, 2009

Melatonin is a molecule present in multitude of taxa and may be ubiquitous organisms. It has been found bacteria, unicellular eukaryotes, macroalgae, fungi, plants animals. A primary biological function melatonin primitive organisms antioxidant defence to protect against toxic free radical damage. During evolution, adopted by multicellular perform many other functions. These functions likely include the chemical expression darkness vertebrates, environmental tolerance fungi plants, sexual signaling birds fish, seasonal reproductive regulation photoperiodic mammals, immunomodulation anti-inflammatory activity all vertebrates tested. Moreover, its waning production during aging indicate senescence terms bio-clock Conversely, high levels can serve as signal vitality health. The multiple partially attributed unconventional metabolism which comprised multi-enzymatic, pseudo-enzymatic non-enzymatic pathways. As result, several bioactive metabolites are formed some presumed reported date may, fact, mediated these metabolites. changing roles seem have evolved from an antioxidant.

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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Bioactive compounds in wine: Resveratrol, hydroxytyrosol and melatonin: A review

Food Chemistry, Год журнала: 2011, Номер 130(4), С. 797 - 813

Опубликована: Авг. 14, 2011

Язык: Английский

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Phytomelatonin: Assisting Plants to Survive and Thrive

Molecules, Год журнала: 2015, Номер 20(4), С. 7396 - 7437

Опубликована: Апрель 22, 2015

This review summarizes the advances that have been made in terms of identified functions melatonin plants. Melatonin is an endogenously-produced molecule all plant species investigated. Its concentration organs varies different tissues, e.g., roots versus leaves, and with their developmental stage. As animals, pathway synthesis plants utilizes tryptophan as essential precursor molecule. inducible when they are exposed to abiotic stresses (extremes temperature, toxins, increased soil salinity, drought, etc.) well biotic (fungal infection). aids root growth, leaf morphology, chlorophyll preservation fruit development. There also evidence exogenously-applied improves seed germination, growth crop yield its application products post-harvest shows ripening may improve food quality. Since was only discovered two decades ago, there still a great deal learn about functional significance It hope authors current will serve stimulus for scientists join endeavor clarifying function this phylogenetically-ancient particularly reference mechanisms by which mediates multiple actions.

Язык: Английский

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Melatonin: Action as antioxidant and potential applications in human disease and aging

Toxicology, Год журнала: 2010, Номер 278(1), С. 55 - 67

Опубликована: Апрель 26, 2010

Язык: Английский

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The ameliorative effects of exogenous melatonin on grape cuttings under water‐deficient stress: antioxidant metabolites, leaf anatomy, and chloroplast morphology

Journal of Pineal Research, Год журнала: 2014, Номер 57(2), С. 200 - 212

Опубликована: Июль 10, 2014

Grapes are an important economic crop and widely cultivated around the world. Most grapes grown in arid or semi-arid regions, droughts take a heavy toll grape wine production areas. Developing effective drought-resistant cultivation measures is priority for viticulture. Melatonin, indoleamine, mediates many physiological processes plants. Herein, we examined whether exogenously applied melatonin could improve resistance of seedlings from cuttings to polyethylene glycol-induced water-deficient stress. The application 10% glycol (PEG) markedly inhibited growth cuttings, caused oxidative stress damage H2 O2 O2∙-, reduced potential efficiency Photosystem II amount chlorophyll. Application partially alleviated injury slowed decline II, limited effects on leaf thickness, spongy tissue, stoma size after PEG. Melatonin treatment also helped preserve internal lamellar system chloroplasts ultrastructural induced by drought This ameliorating effect may be ascribed enhanced activity antioxidant enzymes, increased levels nonenzymatic antioxidants, osmoprotectants (free proline). We conclude that reducing

Язык: Английский

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The RNA‐seq approach to discriminate gene expression profiles in response to melatonin on cucumber lateral root formation

Journal of Pineal Research, Год журнала: 2013, Номер 56(1), С. 39 - 50

Опубликована: Окт. 8, 2013

Abstract Cucumber is a model cucurbitaceous plant with known genome sequence which important for studying molecular mechanisms of root development. In this study, RNA sequencing was employed to explore the mechanism melatonin‐induced lateral formation in cucumber under salt stress. Three groups seeds were examined, that is, primed without melatonin ( CK ), solution containing 10 or 500 μmol/L (M10 and M500, respectively). These then germinated NaCl solution. The ‐seq analysis generated 16,866,670 reads aligned 17,920 genes, provided abundant data formation. A total 17,552, 17,450, 17,393 genes identified from roots three treatments , M10 expression 121 significantly up‐regulated, 196 down‐regulated M500 showed an obvious increase on number roots. enriched 57 KEGG pathways 16 GO terms (M500 versus ). Based their pattern, peroxidase‐related selected as candidates be involved response. Several transcription factor families might play roles processes. related cell wall formation, carbohydrate metabolic processes, oxidation/reduction catalytic activity also different patterns result treatments. This ‐sequencing study will enable scientific community better define processes affect response treatment.

Язык: Английский

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