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Methane delays the senescence and browning in daylily buds by re-established redox homeostasis

文献类型： 外文期刊

作者： Hu, Huali 1 ; Liu, Dan 2 ; Li, Pengxia 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Jiangsu, Peoples R China

2.Nanjing Agr Univ, Coll Life Sci, Lab Ctr Life Sci, Nanjing, Jiangsu, Peoples R China

3.Jiangsu Acad Agr Sci, Engn Lab Hort Prod Postharvest Treatment, Nanjing, Jiangsu, Peoples R China

关键词： daylily buds; methane-rich water; degree of browning; reactive oxygen species; unsaturated; saturated fatty acid ratio; energy charge

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：3.638； 五年影响因子：3.802 ）

ISSN： 0022-5142

年卷期： 2018 年 98 卷 5 期

页码：

收录情况： SCI

摘要： BACKGROUNDDuring the postharvest senescence of fruits and vegetables, redox imbalance occurs. Although the release of methane (CH4) has been observed for a long time and its antioxidant properties have recently been demonstrated in animals and plants, the corresponding physiological role of CH4 in regulating plant senescence has not yet been elucidated. RESULTSOur results indicate that the postharvest deterioration of daylily buds during storage is greatly ameliorated by the exogenous application of CH4, particularly in the inhibition of tissue browning. The results are supported by a decrease in the degree of browning and by the corresponding phenotype, which are correlated with the suppressed polyphenoloxidase activity. CH4 also maintains the re-establishment of redox balance, as indicated by the lower relative leakage rate, lipid peroxidation level, and reactive oxygen species accumulation in daylily buds. Furthermore, the decrease of the unsaturated/saturated fatty acid ratio and energy charge during storage was also attenuated. CONCLUSIONThese results clearly suggest that the postharvest treatment with CH4 is an effective means of prolonging the storage life of daylily buds. (c) 2017 Society of Chemical Industry

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