Effects of ozone treatment on gene profiling involved in ASA-GSH cycle in postharvest cantaloupe

Lu, Xiaohui; Zhang, Huijie; Zhang, Na; Dong, Chen; Ji, Haipeng; Yu, Jingquan; Ban, Zhaojun; Yan, Rong; Zhang, Ting; Chen, Cunkun; Jiang, Yumei

doi:10.1016/j.scienta.2023.111843

Cited by 13 publications

(2 citation statements)

References 44 publications

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“…Lu et al also concluded that cantaloupe promoted an increase in AsA content after ozone treatment. 55 It was hypothesized that there might be a correlation between AsA and GSH, which act synergistically to scavenge the large amount of reactive oxygen species (ROS) accumulated by plants during adversity stress, in order to maintain the integrity of the cell membrane structure. 56 However, the scavenging of ROS by AsA and GSH was inhibited by high concentrations of melatonin, suggesting that appropriate melatonin can promote the increase of AsA and GSH contents under adversity stress, while too high a concentration would be counterproductive.…”

Section: Discussionmentioning

confidence: 99%

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Yang,

Wei

et al. 2024

Plant Signaling & Behavior

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Saline and alkaline stress is one of the major abiotic stresses facing agricultural production, which severely inhibits the growth and yield of plant. The application of plant growth regulators can effectively prevent crop yield reduction caused by saline and alkaline stress. Exogenous melatonin (MT) can act as a signaling molecule involved in the regulation of a variety of physiological processes in plants, has been found to play a key role in enhancing the improvement of plant tolerance to abiotic stresses. However, the effects of exogenous MT on saline and alkaline tolerance of table grape seedlings and its mechanism have not been clarified. The aim of this study was to investigate the role of exogenous MT on morphological and physiological growth of table grape seedlings ( Vitis vinifera L.) under saline and alkaline stress. The results showed that saline and alkaline stress resulted in yellowing and wilting of grape leaves and a decrease in chlorophyll content, whereas the application of exogenous MT alleviated the degradation of chlorophyll in grape seedling leaves caused by saline and alkaline stress and promoted the accumulation of soluble sugars and proline content. In addition, exogenous MT increased the activity of antioxidant enzymes, which resulted in the scavenging of reactive oxygen species (ROS) generated by saline and alkaline stress. In conclusion, exogenous MT was involved in the tolerance of grape seedlings to saline and alkaline stress, and enhanced the saline and alkaline resistance of grape seedlings to promote the growth and development of the grape industry in saline and alkaline areas.

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Section: Discussionmentioning

confidence: 99%

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Yang,

Wei

et al. 2024

Plant Signaling & Behavior

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“…Based on previous literature and the prior work of our group, it was determined that a 15 mg/m 3 OT can help maintain the physiological quality of cantaloupes (Chen et al., 2020; Gao et al., 2020; Lu et al., 2023; Zhang, Zhang et al., 2020). For this study, cantaloupes were randomly divided into two groups of 40 and set an ozone concentration of 15 mg/m 3 .…”

Section: Methodsmentioning

confidence: 99%

Effect of ozone treatment on phenylpropanoid metabolism in harvested cantaloupes

Ren,

Li,

Dong

et al. 2024

Journal of Food Science

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Phenylpropanoid metabolism plays an important role in cantaloupe ripening and senescence, but the mechanism of ozone regulation on phenylpropanoid metabolism remains unclear. This study investigated how ozone treatment modulates the levels of secondary metabolites associated with phenylpropanoid metabolism, the related enzyme activities, and gene expression in cantaloupe. Treating cantaloupes with 15 mg/m3 of ozone after precooling can help maintain postharvest hardness. This treatment also enhances the production and accumulation of secondary metabolites, such as total phenols, flavonoids, and lignin. These metabolites are essential components of the phenylpropanoid metabolic pathway, activating enzymes like phenylalanine ammonia‐lyase, cinnamate 4‐hydroxylase, 4CL, chalcone synthase, and chalcone isomerase. The results of the transcriptional expression patterns showed that differential gene expression related to phenylpropanoid metabolism in the peel of ozone‐treated cantaloupes was primarily observed during the middle and late storage stages. In contrast, the pulp exhibited significant differential gene expression mainly during the early storage stage. Furthermore, it was observed that the level of gene expression in the peel was generally higher than that in the pulp. The correlation between the relative amount of gene changes in cantaloupe, activity of selected enzymes, and concentration of secondary metabolites could be accompanied by positive regulation of the phenylpropanoid metabolic pathway. Therefore, ozone stress induction positively enhances the biosynthesis of flavonoids in cantaloupes, leading to an increased accumulation of secondary metabolites. Additionally, it also improves the postharvest storage quality of cantaloupes.

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Exogenous nitric oxide treatment delays the senescence of postharvest mung bean sprouts by regulating ascorbic acid metabolism

Wang,

Qiu,

Zhang

et al. 2024

J Sci Food Agric

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BACKGROUNDThis study evaluated the effects of nitric oxide (NO) treatment on ascorbic acid (AsA) metabolism and mung bean sprout quality. It examined changes in the AsA content, enzyme activity associated with AsA metabolism, antioxidant capacity, cell membrane composition, and cellular structure to clarify the effects of NO on mung bean sprouts.RESULTSNitric oxide treatment preserved mung bean sprout quality by enhancing significantly the activity of enzymes involved in the l‐galactose pathway (including guanosine diphosphate (GDP)glutathione (‐d‐mannose pyrophosphorylase, GDP‐mannose‐3′,5′‐epimerase, GDP‐l‐galactose phosphorylase, l‐galactose‐1‐phosphate phosphatase, l‐galactose dehydrogenase, and l‐galactose‐1,4‐lactone dehydrogenase) and the AsA‐glutathione (GSH)(Beijing Solarbio Science and Technology Co.,Ltd., Beijing, China) cycle (including ascorbate peroxidase, ascorbic acid oxidase, glutathione reductase, dehydroascorbate reductase, and monodehydroascorbate reductase) during the germination and storage stage. Increased enzyme activity led to an increase in AsA content and enhanced antioxidant capacity, and reduced the membrane lipid damage in mung bean sprouts. This was demonstrated by higher levels of DPPH radical scavenging capacity, unsaturated fatty acids and phospholipids, along with lower levels of hydrogen peroxide, superoxide anions, and malondiadehyde, in NO‐treated mung bean sprouts. Scanning electron microscopy also revealed that NO treatment maintained the integrity of the cellular structure of the mung bean sprouts.CONCLUSIONNitric oxide accelerates AsA metabolism effectively by regulating the biosynthesis and regeneration of AsA in mung bean sprouts. These changes increased AsA levels, alleviated membrane lipid damage, delayed senescence, and maintained the quality of mung bean sprouts during storage. © 2024 Society of Chemical Industry.

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Effects of ozone treatment on gene profiling involved in ASA-GSH cycle in postharvest cantaloupe

Cited by 13 publications

References 44 publications

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Effect of ozone treatment on phenylpropanoid metabolism in harvested cantaloupes

Exogenous nitric oxide treatment delays the senescence of postharvest mung bean sprouts by regulating ascorbic acid metabolism

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