文献类型： 外文期刊

作者： Gao, Shuai-Ping ¹ ; Hu, Kang-Di ¹ ; Hu, Lan-Ying ¹ ; Li, Yan-Hong ¹ ; Han, Yi ¹ ; Wang, Hui-Li ¹ ; Lv, Kai ² ; Liu, Yong- ¹ ;

作者机构： 1.Hefei Univ Technol, Sch Biotechnol & Food Engn, Hefei 230009, Peoples R China

2.Anhui Acad Agr Sci, Inst Informat, Hefei 230031, Peoples R China

关键词： antioxidative enzymes;gaseous signals;nutrients;reactive oxygen species

期刊名称：HORTSCIENCE （ 影响因子：1.455； 五年影响因子：1.617 ）

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收录情况： SCI

摘要： Hydrogen sulfide (H2S) was recently recognized as an endogenous gaseous molecule involved in seed germination, root organogenesis, abiotic stress tolerance, guard cell movement, and delay of senescence in plants. In the present study, we show that H2S participates in the regulation of postharvest ripening and senescence in fresh-cut kiwifruit, Actinidia deliciosa. Fumigation of fresh-cut kiwifruit with the H2S donor sodium hydrosulfide (NaHS) solution prolonged kiwifruit storage time and alleviated senescence and tissue softening in a dose-dependent manner at an optimal concentration of 1.0 mmol.L-1 NaHS. H2S treatment maintained higher levels of reducing sugars, soluble proteins, free amino acids, ascorbate, and chlorophyll and lowered carotenoid levels. H2S treatment also significantly decreased the contents of malondialdehyde (MDA), hydrogen peroxide (H2O2) and superoxide anion (O-center dot(2)-) during fruit storage compared with water controls. Furthermore, the activities of guaiacol peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) were increased by H2S treatment, whereas the activity of lipoxygenase (LOX) was decreased compared with untreated controls. Taken together, these results suggest that H2S is involved in prolonging postharvest shelf life and plays an antioxidative role in fresh-cut kiwifruit.