Melatonin enhances the resistance of ginger rhizomes to postharvest fungal decay

Huang, Ke; Yuan, Shushan; Miao, Cailing; Chang, Cheng; Wang, Lei; Cao, Shouhua; Huang, Xiaosheng; Li, Wenhua; Zou, Yuping; Sun, Zhiqiang; Wang, Qi; Zeng, Ceng; Liu, Jia; Wang, Zhenshuo

doi:10.1016/j.postharvbio.2021.111706

Cited by 12 publications

(6 citation statements)

References 48 publications

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“…By inhibiting respiration and preventing nutrient degradation, MEL has the potential to maintain TA, TSS, and pH levels during storage, thereby delaying senescence 17 . Similar findings have been reported in research on cucumber 16 , broccoli 39 , and peaches 40 indicating an increase in pH, TSS, and TA with MEL treatment, However, another study demonstrated that MEL had no significant effect on the levels of the TSS and TA in ginger rhizome 14 .…”

Section: Resultssupporting

confidence: 87%

“…Previous research has consistently indicated that MEL can increase resistance to post-harvest diseases 13 . The current study's findings align with previous reports on the effects of MEL treatment in reducing postharvest decay in various fruits, including strawberries 41 , sweet cherries 17 , tomatoes 42 , ginger rhizome 14 , and apples 43 . Wang et al 17 concluded that MEL treatment can preserve the integrity of cell membranes and prevent decay by modulating the respiration rate, maintaining endogenous MEL levels, enhancing defense-related enzymes and antioxidant activities, and reducing the accumulation of reactive oxygen species (O 2 and H 2 O 2 ).…”

Section: Fungal Decay Incidencesupporting

confidence: 91%

“…Several studies have shown that environmental stresses can elevate endogenous melatonin (MEL) levels. Additionally, the application of exogenous melatonin has been found to enhance resistance to both biotic (fungal) and abiotic (chilling) stresses, [11][12][13][14] as well as to prolong the shelf life of various crops, including strawberry 15 , cucumber 16 , sweet cherry 17 , Chinese flowering cabbage 18 , ginger rhizomes 14 , and jujube 19 . This effect is attributed to the increased activity of the phenylalanine ammonialyase (PAL) enzyme, which plays a crucial role in the biosynthesis of phenols and flavonoids.…”

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confidence: 99%

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Exogenous melatonin prolongs raspberry postharvest life quality by increasing some antioxidant and enzyme activity and phytochemical contents

Rahmanzadeh-Ishkeh,

Shirzad,

Tofighi

et al. 2024

Sci Rep

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There is a growing trend towards enhancing the post-harvest shelf life and maintaining the nutritional quality of horticultural products using eco-friendly methods. Raspberries are valued for their diverse array of phenolic compounds, which are key contributors to their health-promoting properties. However, raspberries are prone to a relatively short post-harvest lifespan. The present study aimed to investigate the effect of exogenous melatonin (MEL; 0, 0.001, 0.01, and 0.1 mM) on decay control and shelf-life extension. The results demonstrated that MEL treatment significantly reduced the fruit decay rate (P ≤ 0.01). Based on the findings, MEL treatment significantly increased titratable acidity (TA), total phenolics content (TPC), total flavonoid content (TFC), and total anthocyanin content (TAC). Furthermore, the MEL-treated samples showed increased levels of rutin and quercetin content, as well as antioxidant activity as measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reduction activity potential (FRAP). Additionally, the samples exhibited higher levels of phenylalanine ammonia-lyase (PAL) and catalase (CAT) enzymes compared to the control samples. Moreover, the levels of pH, total soluble solids (TSS), and IC50 were decreased in the MEL-treated samples (P ≤ 0.01). The highest amount of TA (0.619 g/100 ml juice), rutin (16.722 µg/ml juice) and quercetin (1.467 µg/ml juice), and PAL activity (225.696 nm/g FW/min) was observed at 0.001 mM treatment, while, the highest amount of TAC (227.235 mg Cy-g/100 ml juice) at a concentration of 0.01 mM and CAT (0.696 u/g FW) and TAL activities (9.553 nm/100 g FW) at a concentration of 0.1 mM were obtained. Considering the lack of significant differences in the effects of melatonin concentrations and the low dose of 0.001 mM, this concentration is recommended for further research. The hierarchical cluster analysis (HCA) and principal component analysis (PCA) divided the treatments into three groups based on their characteristics. Based on the Pearson correlation between TPC, TFC, TAC, and TAA, a positive correlation was observed with antioxidant (DPPH and FRAP) and enzyme (PAL and CAT) activities. The results of this study have identified melatonin as an eco-friendly compound that enhances the shelf life of raspberry fruits by improving phenolic compounds, as well as antioxidant and enzyme activities.

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Section: Resultssupporting

confidence: 87%

Section: Fungal Decay Incidencesupporting

confidence: 91%

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confidence: 99%

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Exogenous melatonin prolongs raspberry postharvest life quality by increasing some antioxidant and enzyme activity and phytochemical contents

Rahmanzadeh-Ishkeh,

Shirzad,

Tofighi

et al. 2024

Sci Rep

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“…GLU and CHT are pathogenesis-related proteins in plant tissues that can induce resistance to further invasion by pathogenic bacteria, disrupt the cell walls of fungi, and reduce fungal viability, thereby enhancing disease resistance (Hu et al, 2019). Huang et al (2021) found that MT treatment upregulated GLU and CHT gene expressions and enhanced the resistance of ginger rootstocks to Fusarium oxysporum and Penicillium compactum. In our study, we found that MT treatment upregulated the expression of the pathogenesisrelated proteins, VaGLU and VaCHT (Figures 4G,H), which is consistent with the abovementioned results.…”

Section: Discussionmentioning

confidence: 99%

Melatonin Enhances the Postharvest Disease Resistance of Blueberries Fruit by Modulating the Jasmonic Acid Signaling Pathway and Phenylpropanoid Metabolites

et al. 2022

Front. Chem.

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In this study, to investigate the physiological and molecular mechanisms of melatonin inhibiting the postharvest rot of blueberry fruits, blueberry fruits were dipped in 0.3 mmol L−1 melatonin solution for 3 min and stored at 0°C for 80 days. The results indicated that melatonin did not significantly (p > 0.05) inhibit the mycelial growth or spore germination of Alternaria alternata, Botrytis cinerea, and Colletotrichum gloeosporioides. In addition, an in vivo study revealed that melatonin treatment increased the enzymatic activities of phenylalanine ammonia lyase (PAL), cinnamate 4-hydroxylase (C4H), 4-coumarate-CoA ligase (4CL), cinnamyl alcohol dehydrogenase (CAD), polyphenol oxidase (PPO), and peroxidase (POD) in fruits. Furthermore, genes related to jasmonic acid synthesis were upregulated (VaLOX, VaAOS, and VaAOC), as were those related to pathogenesis-related proteins (VaGLU and VaCHT) and phenylpropane metabolism (VaPAL, VaC4H, Va4CL, VaCAD, VaPPO, and VaPOD), which promoted the accumulation of total phenols, flavonoids, anthocyanins, and lignin in the fruits. These results suggest that melatonin enhances the postharvest disease resistance of blueberry fruits by mediating the jasmonic acid signaling pathway and the phenylpropane pathway.

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“…GLU and CHI are PRs, which are hydrolases produced to improve plant resistance to foreign pathogenic bacteria [ 31 ]. Research has found that low-dose UV-C irradiation and melatonin treatment could enhance GLU and CHI enzyme activity and related gene expression, thereby promoting resistance to fungal decay [ 32 , 33 ]. Quercetin treatment has been proven to activate GLU and CHI and upregulate the related gene expression levels, thereby inducing resistance to Penicillium expansum in kiwifruit [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

Effect and Mechanism of L-Arginine against Alternaria Fruit Rot in Postharvest Blueberry Fruit

Wang,

Zhao,

et al. 2024

Plants

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This study aimed to explore the impact of L-arginine (Arg) on the development of resistance to Alternaria tenuissima (A. tenuissima) in blueberries. The metabolism of reactive oxygen species, pathogenesis-related proteins (PRs), and jasmonic acid (JA) biosynthesis pathways were analyzed, including changes in activity and gene expression of key enzymes. The results indicated that Arg treatment could prevent the development of Alternaria fruit rot in postharvest blueberries. In addition, it was also found to induce a burst of hydrogen peroxide in the blueberries early on during storage, thereby improving their resistance to A. tenuissima. Arg treatment was observed to increase the activity of antioxidant enzymes (peroxidase, catalase, superoxide dismutase, and ascorbate peroxidase) and related gene expression, as well as the total levels of phenolics, flavonoids, and anthocyanin in the blueberries. The activity and gene expression of the PRs (chitinase and β-1,3-glucanase) were elevated in Arg-treated blueberries, boosting their resistance to pathogens. Additionally, a surge in endogenous JA content was detected in Arg-treated blueberries, along with upregulated expression of key genes related the JA biosynthesis pathway (VcLOX1, VcAOS1, VcAOC, VcAOC3, VcOPR1, VcOPR3, VcMYC2, and VcCOI1), thereby further bolstering disease resistance. In conclusion, Arg treatment was determined to be a promising prospective method for controlling Alternaria fruit rot in blueberries.

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Melatonin enhances the resistance of ginger rhizomes to postharvest fungal decay

Cited by 12 publications

References 48 publications

Exogenous melatonin prolongs raspberry postharvest life quality by increasing some antioxidant and enzyme activity and phytochemical contents

Exogenous melatonin prolongs raspberry postharvest life quality by increasing some antioxidant and enzyme activity and phytochemical contents

Melatonin Enhances the Postharvest Disease Resistance of Blueberries Fruit by Modulating the Jasmonic Acid Signaling Pathway and Phenylpropanoid Metabolites

Effect and Mechanism of L-Arginine against Alternaria Fruit Rot in Postharvest Blueberry Fruit

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