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园艺学报 ›› 2026, Vol. 53 ›› Issue (3): 817-830.doi: 10.16420/j.issn.0513-353x.2025-0155

• 栽培·生理生化 • 上一篇    下一篇

硝普钠对哈密瓜采后品质及活性氧代谢影响的研究

贾美惠, 黄帅, 张蔓蔓, 刘乾, 王晓兵, 张琪, 雷雅馨, 王静*()   

  1. 新疆农业大学食品科学与药学学院,乌鲁木齐 830052
  • 收稿日期:2025-07-24 修回日期:2025-10-09 出版日期:2026-03-25 发布日期:2026-03-20
  • 通讯作者:
    * E-mail:
  • 基金资助:
    国家自然科学基金项目(32260613); 新疆维吾尔自治区自然科学基金面上项目(2022D01A80)

Effect of Sodium Nitroprusside on Postharvest Quality and Reactive Oxygen Metabolism of Hami Melon

JIA Meihui, HUANG Shuai, ZHANG Manman, LIU Qian, WANG Xiaobing, ZHANG Qi, LEI Yaxin, WANG Jing*()   

  1. School of Food Science and Pharmacy,Xinjiang Agricultural University,Urumqi 830052,China
  • Received:2025-07-24 Revised:2025-10-09 Published:2026-03-25 Online:2026-03-20

摘要:

以‘西州密25号’哈密瓜为试材,探究一氧化氮(NO)供体硝普钠(sodium nitroprusside,SNP)对低温[(3 ± 1)℃]贮藏期间哈密瓜品质和活性氧代谢的影响。与对照相比,1.0 mmol · L-1 SNP浸泡30 min处理的果实在贮藏期间(28 ~ 42 d)维持了较高的可溶性糖、可溶性蛋白、可滴定酸及抗坏血酸含量;有效抑制了丙二醛(MDA)积累和细胞膜透性上升,降低了过氧化氢(H2O2)和超氧阴离子生成速率;显著提高了过氧化氢酶(CAT)和超氧化物歧化酶(SOD)等抗氧化酶的活性,并显著促进CmSODCmCATCmAPXCmPOD等基因的表达,降低了哈密瓜果实的冷害指数,减缓了膜脂过氧化程度。表明1.0 mmol · L-1 SNP处理可通过调控哈密瓜采后活性氧代谢平衡,降低冷害及保持果实品质。

关键词: 哈密瓜, 采后, 一氧化氮, 硝普钠, 品质, 活性氧代谢

Abstract:

To investigate the effects of sodium nitroprusside(SNP),a nitric oxide(NO)donor,on the quality and reactive oxygen species(ROS)metabolism of Hami melon during low-temperature storage[(3 ± 1)℃],‘Xizhoumi 25’Hami melons were used as test materials. Compared with the control,the fruits treated with 1.0 mmol · L-1 SNP maintained higher contents of soluble sugars,soluble proteins,titratable acids,and ascorbic acid during storage(28-42 days). This treatment effectively inhibited the accumulation of malondialdehyde(MDA)and the increase in cell membrane permeability,reduced the production rates of hydrogen peroxide(H2O2)and superoxide anion,and significantly enhanced the activities of antioxidant enzymes such as catalase(CAT)and superoxide dismutase(SOD). Additionally,it remarkably promoted the expression of genes including CmSODCmCATCmAPX,and CmPOD,thereby decreasing the cold damage index of Hami melon fruits and alleviating the degree of membrane lipid peroxidation. These results indicate that 1.0 mmol · L-1 SNP treatment can reduce cold damage and maintain fruit quality by regulating the balance of postharvest ROS metabolism in Hami melons.

Key words: Hami melon, postharvest, NO, SNP, quality, reactive oxygen species metabolism