Melatonin application improves berry coloration, sucrose synthesis, and nutrient absorption in ‘Summer Black’ grape

Xia, Hui; Shen, Yanping; Deng, Honghong; Wang, Jin; Lin, Lijin; Deng, Qunxian; Lv, Xiulan; Hu, Ronggui; Wang, Zhi‐Hui; Xiong, Bo

doi:10.1016/j.foodchem.2021.129713

Cited by 38 publications

(31 citation statements)

References 27 publications

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“…Xiao et al (2021b) also showed that the melatonin treatment for apple and pear reduced the browning index of the fruits, increased the L* value, and effectively maintained the fruit appearance. The finding is supported by the data reported in a previous study that the melatonin treatment significantly improved the color of grapefruit (Xia et al, 2021).…”

Section: Discussionsupporting

confidence: 89%

Melatonin treatment improves postharvest quality and regulates reactive oxygen species metabolism in “Feizixiao” litchi based on principal component analysis

et al. 2022

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Postharvest quality of litchi reduces rapidly during storage at room temperature. This study aimed to investigate the effect of melatonin treatment on postharvest quality and oxidative stress markers of litchi fruit during cold storage. The “Feizixiao” litchi was treated with melatonin solution concentrations of 0.2 and 0.6 mmol·L−1 and then stored at 4°C for 12 days. The results confirmed that the melatonin treatment effectively maintained the appearance and color of the litchi fruit, suppressed the peel browning, and improved the litchi quality. The treatment also significantly enhanced the levels of endogenous melatonin, antioxidant components (total phenolics, flavonoids, and anthocyanin), and antioxidant enzyme activities of the fruit. It also inhibited the other oxidative stress markers, such as O2−, H2O2, MDA, and protein carbonyl content, and upregulated the expressions of antioxidant and Msr-related genes. Correlation and principal component analyses further confirmed that the melatonin treatment effectively delayed the fruit senescence by enhancing the antioxidant enzyme activities and modulating peel browning and reactive oxygen species metabolism of the litchi fruit via regulating gene expression of the related enzymes (SOD and PPO). These findings suggested that the exogenous application of melatonin to litchi during the postharvest is an ideal way to preserve the fruit quality and delay fruit senescence.

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Section: Discussionsupporting

confidence: 89%

Melatonin treatment improves postharvest quality and regulates reactive oxygen species metabolism in “Feizixiao” litchi based on principal component analysis

et al. 2022

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“…Berry weight was measured using an electronic balance, and the SSC of the berries was detected by a digital refractometer (Atago, Tokyo, Japan). The total anthocyanin concentration was determined using the pHdifferential spectrophotometry method 31 by detecting the absorbance of the extract supernatant at pH 1.0 and 4.5 at 510 and 700 nm, respectively. The procedure was repeated three times for every 10 berries as a biological replicate.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…The anthocyanin components of grape skin were determined according to our previous method. 31 In brief, anthocyanins were extracted from the grape peel with 1% hydrochloric acid solution, and the content of the anthocyanin monomer was determined by HPLC after filtration by an Agilent 1260 HPLC system (Agilent Technologies, Santa Clara, CA) equipped with an ultraviolet detector and a Comatex C18 column (CoMetro, New Jersey). Solvent A (10% formic acid) and solvent B (acetonitrile) were used as the mobile phase, following the program: Gene Expression Analysis by qRT-PCR.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Methylation of MYBA1 is Associated with the Coloration in “Manicure Finger” Grape Skin

Shen

Wang

et al. 2021

J. Agric. Food Chem.

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The “Manicure Finger” grape is notable for its fingerlike berries with a bright red top and yellow base; however, the mechanism underlying this color difference remains unknown. This study showed that the anthocyanin concentration and the expression levels of anthocyanin-related genes in the top skin were notably higher than those in the basal skin. The expression levels of DFR, UFGT, and GST were significantly correlated with the anthocyanin content. The promoters of the two VvUFGT alleles can be activated by VvMYBA1, which was verified by the yeast one-hybrid assay, the dual-luciferase reporter gene assay, and the electrophoretic mobility shift assay. Moreover, the methylation level of the VvMYBA1 promoter (−1488 to −1083 bp) in the top skin was significantly lower than that in the basal skin and was positively correlated with the anthocyanin content. Our data suggest that methylation levels of the VvMYBA1 promoter play a crucial role in regulating grape skin coloration.

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“…Besides, carbohydrate import into seeds also directly determines the seed size. Melatonin and ABA have been found to play a regulatory role in sugar metabolism 55–57 . For instance, exogenous melatonin under specific conditions (stress) could play a regulatory role in sugar metabolism and it might modulate carbohydrate concentration in etiolated BY‐2 cells, and ABA promotes starch synthesis and storage metabolism in dormant grapevine buds 55,58 .…”

Section: Discussionmentioning

confidence: 99%

“…Melatonin and ABA have been found to play a regulatory role in sugar metabolism. [55][56][57] For instance, exogenous melatonin under specific conditions (stress) could play a regulatory role in sugar metabolism and it might modulate carbohydrate concentration in etiolated BY-2 cells, and ABA promotes starch synthesis and storage metabolism in dormant grapevine buds. 55,58 Therefore, the melatonin receptor PMTR1 may be involved in the seed development by regulating the network signaling of melatonin, ABA, and sugar.…”

Section: Discussionmentioning

confidence: 99%

The phytomelatonin receptor PMTR1 regulates seed development and germination by modulating abscisic acid homeostasis in Arabidopsis thaliana

Yin

Bai

Gong

et al. 2022

Journal of Pineal Research

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Melatonin is known to involve multiple physiological actions in plants. Herein, we found that exogenous melatonin inhibited the Arabidopsis seedling growth through the elevated abscisic acid (ABA) levels, and the elevated ABA was ascribed to the upregulation of 9‐cis‐epoxycarotenoid dioxygenase genes (NCEDs) in the ABA biosynthesis pathway. We also found that the overexpression lines of the melatonin receptor gene PMTR1 (also known as Cand2) yielded smaller seeds and germinated slower than the wild type, whereas PMTR1‐knockout mutants produced larger seeds and germinated faster than the wild type. During the seed development, the accumulation peak of ABA was higher in the PMTR1‐knockout mutant, while it was lower in the PMTR1‐overexpression line than that in the wild type. In the dry seeds and imbibed seeds, the PMTR1‐overexpression line accumulated higher ABA levels, while the PMTR1‐knockout contained less ABA than the wild type. In summary, our findings suggest that PMTR1 is involved in ABA‐mediated seed development and germination in Arabidopsis.

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Melatonin application improves berry coloration, sucrose synthesis, and nutrient absorption in ‘Summer Black’ grape

Cited by 38 publications

References 27 publications

Melatonin treatment improves postharvest quality and regulates reactive oxygen species metabolism in “Feizixiao” litchi based on principal component analysis

Melatonin treatment improves postharvest quality and regulates reactive oxygen species metabolism in “Feizixiao” litchi based on principal component analysis

Methylation of MYBA1 is Associated with the Coloration in “Manicure Finger” Grape Skin

The phytomelatonin receptor PMTR1 regulates seed development and germination by modulating abscisic acid homeostasis in Arabidopsis thaliana

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