Melatonin treatment delayed fruit softening by regulating postharvest carbohydrate metabolism of hami melon
文献类型： 外文期刊
作者： Wang, Yue 1 ; Liu, Guang 3 ; Zhang, Weida 1 ; Li, Lingling 1 ; Yang, Wanting 1 ; Liu, Yuxing 1 ; Jiang, Li 4 ; Guo, Minrui 1 ; Chen, Guogang 1 ;
作者机构： 1.Shihezi Univ, Coll Food Sci & Technol, Shihezi 832000, Xinjiang, Peoples R China
2.Minist Educ, Res Ctr Xinjiang Characterist Fruit & Vegetable St, Shihezi 832000, Xinjiang, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Vegetable Crop, Nanjing 210014, Peoples R China
4.Xinjiang Shihezi Vocat Coll, Shihezi 832000, Xinjiang, Peoples R China
关键词： Shelf life; Cell wall; Sugar metabolism; Sucrose metabolism; Melon
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.7； 五年影响因子：6.4 ）
ISSN： 0981-9428
年卷期： 2025 年 219 卷
页码：
收录情况： SCI
摘要： Melatonin (MT) treatment has been proven to improve fruit quality. Herein, the efficacy of 0.5 mmol L- 1 MT treatment on carbohydrate metabolism, fruit softening, and their relationship during storage of harvested Hami melons was investigated. The results indicated that compared with those in control group, MT treatment markedly delayed fruit softening and the total soluble solids/titratable acid ratio, inhibited cell wall polysaccharide degradation, and maintained the cell wall integrity in Hami melons. Besides, MT treated also increased the starch, sucrose, and sorbitol contents, enhanced sucrose phosphate synthase and sucrose synthase synthesis activities, whereas reduced pectin methyl esterase, polygalacturonase, cellulase, beta-galactosidase, beta-glucosidase, xyloglucan endotransglycosylase, amylase, sucrose synthase-cleavage, acid invertase, neutral invertase, sorbitol oxidase, NAD-sorbitol dehydrogenase, NADP-sorbitol dehydrogenase activities in Hami melons. Additionally, MT treatment downregulated the expression levels of CmPG, Cm beta-gal, CmAmy, CmAI, CmNI and CmSOX, and upregulated the expression of CmSPS. Collectively, MT could slow fruit softening and prolong its shelf life by regulating carbohydrate metabolism.
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