Determining diurnal and seasonal changes in melatonin andtryptophan contents of eggplant (Solanum melongena L.)

Korkmaz, Ahmet; Yakupoğlu, Gökçen; Köklü, Şebnem; Cucı, Yakup; Kocaçınar, Ferit

doi:10.3906/bot-1611-48

Cited by 11 publications

(8 citation statements)

References 39 publications

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“…Melatonin increased significantly in fruits and seeds with the ripening of the fruits (Yakupoglu et al, 2018). A similar situation was observed in the eggplant plant and it was emphasized that the melatonin contained in the roots was sent to the reproductive organs such as flowers and fruits to protect against oxidative stress (Korkmaz et al, 2017). The highest melatonin content in plants is in generative organs such as fruit, seeds and flowers.…”

Section: Overview On Melatoninsupporting

confidence: 56%

Recent Progress on Melatonin-Induced Salinity Tolerance in Plants: An Overview

Yavaş

Hussain

2022

Turkish JAF Sci.Tech.

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In this context, it is necessary to select and develop salt-tolerant genotypes that can grow in salty soils and have high yields, and formulate strategies which may enhance the plant survival under salinity stress. Melatonin (N-acetyl-5-methoxytryptamine) is an important biological hormone that provides resistance to abiotic stress conditions and can be secreted by plants. Melatonin concentration in plants varies depending on genotype, temperature and growth period. Increase in melatonin concentration is associated with increased SNAT and HIOMAT/ASMT enzyme activity. It plays an important role in gibberellic acid and abscisic acid biosynthesis during the germination and provides plant growth and development. Exogenous application of melatonin significantly alleviates chlorophyll degradation and stomatal closure caused by salt stress, improves photosynthesis and enhances plants' salt tolerance. Besides it significantly reduces the harmful effects of salinity by regulating plant physiology, improving plant morphology, photosynthesis and activities of antioxidant enzymes. The present review discusses the recent studies on the effect of melatonin on plant growth and physiology against salt stress that have important impacts on plant growth and development have been given according to the findings of various researches. It also highlights the mechanim/s of melatonin-induced salinity stress tolerance in plants.

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Section: Overview On Melatoninsupporting

confidence: 56%

Recent Progress on Melatonin-Induced Salinity Tolerance in Plants: An Overview

Yavaş

Hussain

2022

Turkish JAF Sci.Tech.

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“…As may be expected, melatonin has been well reported to help stabilize photosynthetic pigments and the photosynthetic apparatus during seasonal senescence with 41 paper published on the topic of senescence, as well as delaying leaf abscission through interaction with the eponymous phytohormone abscisic acid (Wang et al, 2012). More intriguing is the seasonal variations of melatonin in vegetative tissues such as leaves over the season without dependence on maturity stage, supporting a role for melatonin in interpretation of light signals such as photoperiod (Korkmaz et al, 2017;Zhang H. et al, 2019). The literature shows that melatonin regulates the production of photosynthetic and defensive pigments, including chlorophylls (n = 120), anthocyanins (n = 23), carotenoids (n = 15), and betalain (n = 1) helping to maintain the photosynthetic apparatus under both light stress, and conditions such as temperature stress, which reduce efficiency of the photosynthetic apparatus.…”

Section: Major Research Theme -Light Responsesmentioning

confidence: 73%

“…Melatonin was first reported to have a daily rhythm in Chenopodium rubrum L. in 1997 (Kolar et al, 1997) and since has been found to show rhythmic (n = 13) and diurnal (n = 11) levels in: lupine (Lupinus albus L.; Hernandez-Ruiz and Arnao, 2008), water hyacinth (Eichhornia crassipes (Mart.) Solms; Tan et al, 2007a), sweet cherry (Zhao et al, 2013), eggplant (S. melongena; Korkmaz et al, 2017), rice (Wei et al, 2016), tomato (Arnao and Hernández-Ruiz, 2013), St. John's wort (Chung and Deng, 2020), and Arabidopsis (Li D. et al, 2020). Several melatonin metabolites have also been found to mimic melatonin expression patterns including 3-OHM (Choi and Back, 2019a) and AFMK (Tan et al, 2007a).…”

Section: Major Research Theme -Light Responsesmentioning

confidence: 99%

“…Postharvest melatonin levels have been reported to start to decrease in fruits and are possibly related to the shift in physiological function from embryo development to embryo maintenance and protection through germination. During seed germination melatonin levels have also been found to remain high and to subsequently drop as the plant matures (Korkmaz et al, 2017). Increased melatonin levels have been strongly associated with improved germination (n = 47) in more than 20 species, particularly under abiotic (n = 10) and biotic (n = 10) stress including salinity (n = 13), temperature (n > 10), drought (n = 6) and metal stress (n = 7).…”

Section: Major Research Theme -Protection Of Germ Cells and Tissuesmentioning

confidence: 99%

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A Systematic Review of Melatonin in Plants: An Example of Evolution of Literature

Murch

Erland

2021

Front. Plant Sci.

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Melatonin (N-acetyl-5-methoxy-tryptamine) is a mammalian neurohormone, antioxidant and signaling molecule that was first discovered in plants in 1995. The first studies investigated plant melatonin from a human perspective quantifying melatonin in foods and medicinal plants and questioning whether its presence could explain the activity of some plants as medicines. Starting with these first handful of studies in the late 1990s, plant melatonin research has blossomed into a vibrant and active area of investigation and melatonin has been found to play critical roles in mediating plant responses and development at every stage of the plant life cycle from pollen and embryo development through seed germination, vegetative growth and stress response. Here we have utilized a systematic approach in accordance with the preferred reporting items for systematic reviews and meta-analyses (PRISMA) protocols to reduce bias in our assessment of the literature and provide an overview of the current state of melatonin research in plants, covering 1995–2021. This review provides an overview of the biosynthesis and metabolism of melatonin as well as identifying key themes including: abiotic stress responses, root development, light responses, interkingdom communication, phytohormone and plant signaling. Additionally, potential biases in the literature are investigated and a birefringence in the literature between researchers from plant and medical based which has helped to shape the current state of melatonin research. Several exciting new opportunities for future areas of melatonin research are also identified including investigation of non-crop and non-medicinal species as well as characterization of melatonin signaling networks in plants.

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“…After 10-15 days, the ovule had grown to a sufficient size for excision and analysis and melatonin was found to be at the highest concentrations in the developing ovule with minimal concentrations of the neuroindoles in the fleshy fruit (Murch et al, 2009). Together, these data indicate that melatonin may play a role in protecting the reproductive tissues during flower and seed formation in a Datura species (Murch et Korkmaz et al, 2017aKorkmaz et al, , 2017b. Melatonin is a potent antioxidant and has many roles in plant growth including root induction and stress mitigation as well as regulating circadian rhythms in mammals and potentially in plants (Forsyth, Herbs may be an excellent natural source of pharmacological levels of melatonin.…”

Section: Influence Of Dietary Sources Of Melatonin On Sleep Qualitymentioning

confidence: 95%

Melatonin: One molecule one- medicine for many diseases, coronavirus (SARS-CoV-2) disease (Covid19); Function in plants

Malabadi¹,

Kolkar²,

Meti³

et al. 2021

IJRSI

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This review paper highlights the role of melatonin in many diseases, coronavirus (SARS-CoV-2) disease (covid-19) and multi-physiological functions in plants. Based on its ubiquitous distribution (animal, human, plant, fungi, bacteria, algae), and multi-directional activity, melatonin is recommended as one of the most versatile biological signal of nature. Melatonin, so called a Hormone of darkness, has a high safety profile and potential to be used as COVID-19 therapy. Melatonin is a light sensitive molecule used in the therapy of sleeping disorders-insomnia, glaucoma, stroke, cancers, puberty, Alzheimers disease, Parkinson disease, ultraviolet light skin damage protection, thrombocytopenia, in smoking cessation, headache protection, migrane, and as an antioxidant. Melotonin is present in different parts of all the plant species studied, including leaves, stems, roots, fruits and seeds. Melatonin plays an important aspect to regulate the several physiological role of plants viz. circadian regulator, cytoprotector, growth promoter, antioxidant and free radical scavenger. In plants, melatonin also promotes rhizogenesis, cellular expansion and provide defense against environmental stress condition. Melatonin aids plants in terms of root growth, leaf morphology, chlorophyll preservation and fruit development.

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Determining diurnal and seasonal changes in melatonin andtryptophan contents of eggplant (Solanum melongena L.)

Cited by 11 publications

References 39 publications

Recent Progress on Melatonin-Induced Salinity Tolerance in Plants: An Overview

Recent Progress on Melatonin-Induced Salinity Tolerance in Plants: An Overview

A Systematic Review of Melatonin in Plants: An Example of Evolution of Literature

Melatonin: One molecule one- medicine for many diseases, coronavirus (SARS-CoV-2) disease (Covid19); Function in plants

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