Corrigendum: Melatonin: Current Status and Future Perspectives in Plant Science

Nawaz, Muhammad Azher; Huang, Yuan; Bie, Zhilong; Ahmed, Waqar; Reíter, Russel J.; Niu, Mengliang; Hameed, Saba

doi:10.3389/fpls.2016.00714

Cited by 23 publications

(11 citation statements)

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“…The preferred pathway of serotonin synthesis in plants is through the hydroxylation of tryptamine, by the enzyme tryptophan 5-hydroxylase (T5H), to produce serotonin [11]. In animals, the serotonin synthesis occurs in a reversed step, with 5-hydroxytryptophan being produced by tryptophan hydroxylase and then being decarboxylated, by aromatic acid decarboxylase, to form serotonin [9]. In our samples, a strong correlation was found between tryptamine and tryptophan ( R 2 = 0.92) only in the ‘Forata’ genotype.…”

Section: Resultsmentioning

confidence: 99%

“…However, in the other genotypes this correlation was weak (‘Verde di Macerata’ R 2 = 0.50; ‘Cheddar’ R 2 = 0.13; ‘Graffiti’ R 2 = 0.20), evidencing the need for more detailed studies of these pathways in colored cauliflower. It is noteworthy that the considerable amounts of 5-hydrohytryptophan found in colored cauliflowers may be interesting to consumers, once this amino acid is a precursor of serotonin [9].…”

Section: Resultsmentioning

confidence: 99%

“…In humans, serotonin is produced from the tryptophan by the action of the tryptophan 5-hydroxylase (EC 1.14.16.4), which converts it in 5-hydroxytryptophan. Then, this compound is decarboxylated by the tryptophan decarboxylase (EC 4.1.1.28), in order to form serotonin [9]. In plants, the synthesis of serotonin occurs mainly by the tryptamine biosynthesis pathway.…”

Section: Introductionmentioning

confidence: 99%

“…Plants may present a higher quantity of this substance when compared to animals. In plants, the melatonin acts as an antioxidant, affects the vegetal growth, has the function of stabilizing the cellular membrane and regulates the gene expression [9]. In addition, it has been associated with the reproductive development (flowering), including the circadian rhythms (photoperiod) [18] and as a signaling molecule in the mechanism of defense against pathogen and others biotic and abiotic stresses [19].…”

Section: Introductionmentioning

confidence: 99%

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Bioactive Amines Screening in Four Genotypes of Thermally Processed Cauliflower

et al. 2019

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Biogenic amines are important indicators of food quality with recognized antioxidant capacity. Diets that are rich in these compounds promote several benefits for human health, although the consumption in excess may result in food poisoning. This study aims to screen the levels of biogenic amines in four colored cauliflowers, before and after cooking (boiling, steaming, and microwaving). In addition, the levels of tryptophan and 5-hydroxytryptophan, two serotonin precursors, were analyzed. Our results reveal that thermal processing shows a tendency to increase tryptophan levels and reduce 5-hydroxytryptophan in colored cauliflowers. A reduction of the tryptophan and increase in serotonin contents in ‘Cheddar’, steamed or microwaved, was observed. A higher level of histamine was observed in the genotype ‘Forata’ after cooking, whereas melatonin levels were higher after steaming and microwaving. The lowest levels of biogenic amines and amino acids were observed in ‘Graffiti’. All the colored cauliflowers that were analyzed presented a chemical quality index (CQI) below the pre-established limits, indicating that are safe for consumption, even after cooking. We conclude that the levels of biogenic amines and amino acids in colored cauliflower are safe for human consumption and do not present health risks. Therefore, the consumption of these genotypes, raw or cooked, is a good source of bioactive compounds.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bioactive Amines Screening in Four Genotypes of Thermally Processed Cauliflower

et al. 2019

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“…Besides, the treatment of alkaline-stressed seedlings with MT increased the accumulation of polyamines and the transcript levels of genes involved in (PA) synthesis [95] (Figure 2). In response to alkaline stress, MT reduced oxidative stress by triggering antioxidant scavenging activity, especially ascorbic acid and glutathione [97,98]. MT supplementation decreases membrane leakage and helps the plant regain its regular root architecture [95] (Figure 2).…”

Section: Melatonin and Ph Stressmentioning

confidence: 99%

Role of Melatonin in Plant Tolerance to Soil Stressors: Salinity, pH and Heavy Metals

et al. 2020

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Melatonin (MT) is a pleiotropic molecule with diverse and numerous actions both in plants and animals. In plants, MT acts as an excellent promotor of tolerance against abiotic stress situations such as drought, cold, heat, salinity, and chemical pollutants. In all these situations, MT has a stimulating effect on plants, fomenting many changes in biochemical processes and stress-related gene expression. Melatonin plays vital roles as an antioxidant and can work as a free radical scavenger to protect plants from oxidative stress by stabilization cell redox status; however, MT can alleviate the toxic oxygen and nitrogen species. Beyond this, MT stimulates the antioxidant enzymes and augments antioxidants, as well as activates the ascorbate–glutathione (AsA–GSH) cycle to scavenge excess reactive oxygen species (ROS). In this review, we examine the recent data on the capacity of MT to alleviate the effects of common abiotic soil stressors, such as salinity, alkalinity, acidity, and the presence of heavy metals, reinforcing the general metabolism of plants and counteracting harmful agents. An exhaustive analysis of the latest advances in this regard is presented, and possible future applications of MT are discussed.

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Melatonin: A biomolecule for mitigating postharvest chilling injury in fruits and vegetables

Sati,

Kataria,

Chinchkar

et al. 2023

Crop Science

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The best strategy to extend the shelf life of fresh horticultural produce is to keep it at a low temperature. However, storing fruits and vegetables at a temperature lower than their recommended storage temperature and above the freezing point for a prolonged time leads to the development of chilling injury (CI). Melatonin (MT) being a versatile biological signal has been reported to possess antioxidant properties that aid in mediating stress response and extending the postharvest storage life of horticultural crops. Among CI‐induced mechanisms, MT substantially reduces oxidative stress by elevating the reactive oxygen species scavenging and triggering the phenol accumulation in association with 2, 2‐diphenyl‐1 picryl hydrazyl scavenging activity. Besides, MT increases intracellular energy by maintaining a proper ratio of unsaturated to saturated fatty acid and improving cellular fluidity. Additionally, MT regulates arginine metabolism by maintaining the γ‐aminobutyric acid synthesis. Furthermore, MT encodes the mitogen‐activated protein kinases, and calcium‐dependent protein kinases cascade and acclimate to cold stress by activating C‐repeat binding factors and helps in maintaining postharvest quality. This review reports the recent progress of MT‐induced physiological, biochemical, and molecular mechanisms for enhancing chilling tolerance, which can elevate the marketability and earnings from postharvest horticultural crops.

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Corrigendum: Melatonin: Current Status and Future Perspectives in Plant Science

Cited by 23 publications

References 1 publication

Bioactive Amines Screening in Four Genotypes of Thermally Processed Cauliflower

Bioactive Amines Screening in Four Genotypes of Thermally Processed Cauliflower

Role of Melatonin in Plant Tolerance to Soil Stressors: Salinity, pH and Heavy Metals

Melatonin: A biomolecule for mitigating postharvest chilling injury in fruits and vegetables

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