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

Xie, Jian; Qin, Ziyi; Pan, Jiali; Li, Jing; Li, Xia; Khoo, Hock Eng; Dong, Xinhong

doi:10.3389/fpls.2022.965345

Cited by 23 publications

(9 citation statements)

References 78 publications

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“…Principal component analysis has been widely used to analyze a variety of horticultural crops, including guava, peach and blueberry [ 51 , 52 , 53 ]. The effect of melatonin treatment on postharvest quality and oxidative stress markers of litchi fruit during cold storage was determined using PCA as well as correlation analysis, showing that melatonin treatment effectively delayed the fruit senescence by enhancing the antioxidant enzyme activities and modulating peel browning [ 54 ]. Paulina et al [ 55 ] identified the most important variables in the relationship between 20 selected peach varieties based on PCA model and identified the most attractive varieties.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Preharvest Melatonin on Soft Rot and Quality of Kiwifruit Based on Principal Component Analysis

Peng

Zhu²,

Lin

et al. 2023

Foods

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Botryosphaeria dothidea is the source of the deadly kiwifruit disease known as soft rot. In order to explore the role of melatonin in regulating the postharvest quality and disease resistance of kiwifruit at different growth and development stages, in this study, we applied melatonin at different concentrations to kiwifruit at the young fruit, expansion, and late expansion stages to assess its effect on fruit resistance to B. dothidea, minimize soft rot, and maintain postharvest fruit quality. The results showed that melatonin significantly suppressed the mycelial growth of B. dothidea, with 1.0 mmol/L melatonin inhibiting it by up to 50%. However, 0.1–0.3 mmol/L melatonin had the best control over soft rot. Furthermore, spraying MT during kiwifruit growth can successfully increase fruit weight; preserve postharvest fruit firmness; reduce respiration intensity in the early stages of storage; delay the rise in soluble solids, while maintaining a high titratable acid content to ensure suitable solid acid ratio; increase total phenol, flavonoid, chlorophyll, carotenoid, and ascorbic acid contents; and delay the rise in soluble sugar contents in the late stages of storage. These results have a positive effect on maintaining the nutritional composition of kiwifruit. However, the effects on weight loss, dry matter content, and soluble protein content were not significant. In addition, the results of the principal component analysis demonstrated that 0.3 mmol/L MT increased kiwifruit’s resistance to soft rot while preserving postharvest fruit quality.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Preharvest Melatonin on Soft Rot and Quality of Kiwifruit Based on Principal Component Analysis

Peng

Zhu²,

Lin

et al. 2023

Foods

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“…Cao et al [12] found that MT-treated fruits that were exposed under chilled conditions for a prolonged period significantly enhanced the AsA content and thus controlled the ROS-induced membrane degradations. Xie et al [41] reported that MT could regulate the ROS metabolism and modulate the antioxidant genes, thereby reducing oxidative stress and maintaining overall fruit quality. These findings are in accordance with the present study, where the application of MT could be able to control the ROS and increase NEA.…”

Section: El Ros and Mdamentioning

confidence: 99%

“…High MT concentrations (>50 µmol L −1 ) more effectively controlled LOX activity than lower concentrations. Studies have reported that MT treatment could adversely affect the production of MDA and H 2 O 2 by enhancing the AO enzyme activities and thus effectively controlling the PLD and LOX activities in the plants [21,41]. Kong et al [11] found that the application of MT on the pepper fruit significantly controlled the production of MDA and suppressed the PLD and LOX activity by inhibiting their specific gene expressions.…”

Section: Enzyme Activitiesmentioning

confidence: 99%

Exogenous Application of Melatonin on the Preservation of Physicochemical and Enzymatic Qualities of Pepper Fruit from Chilling Injury

Charoenphun,

Pham,

Rattanawut

et al. 2024

Horticulturae

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This study investigates the impact of melatonin (MT) treatment at varying concentrations (0, 25, 50, 75, 100 µmol L−1) on the post-harvest quality and shelf life of long green pepper fruits stored under low temperature for 28 days. Every 4 days, pepper fruits were examined for the chilling injury (CI) index, weight loss (WL), respiration rates, firmness, electrolyte leakage (EL), reactive oxygen species (ROS), malondialdehyde (MDA) levels, non-enzymatic antioxidant (NEA) content, antioxidant (AO) enzyme activity (superoxide dismutase (SOD), catalase (CAT), and peroxidases (PODs)), and cellular degrading enzymes (polygalacturonase (PG), pectin methylesterase (PME), phospholipase D (PLD), and lipoxygenase (LOX)). MT-treated samples exhibited delayed and reduced CI stress compared to controls, with higher exogenous MT concentrations (>50 µmol L−1) offering significant (p < 0.05) CI reductions. During storage, WL was notably mitigated by MT treatment in the tested samples compared to control samples. This study also demonstrated that MT-treated pepper fruits effectively decelerated respiration rates and consequently preserved pepper firmness. A higher concentration of MT-treated pepper fruits demonstrated a significantly (p < 0.05) lowered level of ROS and MDA while maintaining membrane stability, as evidenced by reduced EL. MT treatment with increasing concentration increased the levels of glutathione (GSH), glutathione disulfide (GSSG), ascorbic acid (AsA), dehydroascorbate (DHA), and total phenolic content (TPC) in the pepper fruits compared to control and thus significantly (p < 0.05) suppressed the ROS production (superoxide anion (O2•−) and hydrogen peroxide (H2O2) radicals) in the pepper fruits. Furthermore, AO enzymes such as SOD, CAT, and POD were also high in the pepper fruits that were treated with higher concentrations of MT (>50 µmol L−1). Additionally, the activities of cellular degrading enzymes (PG, PME, PLD, and LOX), which are linked to senescence and stress-induced physiological disorders, were also effectively regulated by MT-treated (>75 µmol L−1) pepper fruits. Overall, the application of MT at higher concentrations (>75 µmol L−1) demonstrated substantial benefits in preserving the quality and extending the shelf life of pepper fruits during cold storage.

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“…Meanwhile, the accumulation of ROS during postharvest accelerates fruit softening, senescence, and browning, thereby worsening fruit quality and hastening the senescence process ( Adiletta et al., 2021 ). Multiple studies have demonstrated that the boost in ROS scavenging ability induced by postharvest exogenous treatments effectively delays fruit deterioration and postharvest senescence ( Xie et al., 2022 ). Exogenous melatonin treatment increases the activities of super-oxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the buildup of ascorbate and total phenol, thus maintaining the fruit quality of ‘Newhall’ navel orange during postharvest ( Ma et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of exogenous melatonin on antioxidant properties and fruit softening of ‘Fengtang’ plum fruit (Prunus salicina Lindl.) during storage at room temperature

Zhang,

Yang,

Yin

et al. 2024

Front. Plant Sci.

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‘Fengtang‘ plums soften quickly and lose flavor after harvest. This study comprehensively evaluated the effect of exogenous melatonin on the fruit quality of ‘Fengtang’ plums. According to our findings, exogenous melatonin prevented plum fruit from losing water, delayed the decline in firmness, and preserved a high TSS/TA level. Additionally, exogenous melatonin also enhanced the activity of antioxidant enzymes and increased the non-enzymatic antioxidants, thereby further increasing the antioxidant capacity of plum fruit. Notably, exogenous melatonin delayed the degradation of covalent soluble pectin (CSP), cellulose, and hemicellulose, as well as the rise in water-soluble pectin (WSP) concentration and the activity of cell wall degrading enzymes. Further investigation using atomic force microscopy (AFM) revealed that the chain-like structure of ionic-soluble pectin (ISP) and the self-assembly network structures of CSP were depolymerized, and melatonin treatment retarded the depolymerization of pectin structures. Our results showed that exogenous melatonin preserved the postharvest quality of plum fruits by controlling fruit softness and antioxidant capacity during storage.

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

Cited by 23 publications

References 78 publications

Evaluation of Preharvest Melatonin on Soft Rot and Quality of Kiwifruit Based on Principal Component Analysis

Evaluation of Preharvest Melatonin on Soft Rot and Quality of Kiwifruit Based on Principal Component Analysis

Exogenous Application of Melatonin on the Preservation of Physicochemical and Enzymatic Qualities of Pepper Fruit from Chilling Injury

Effect of exogenous melatonin on antioxidant properties and fruit softening of ‘Fengtang’ plum fruit (Prunus salicina Lindl.) during storage at room temperature

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