中国农业科学2012，Vol.45Issue(11)：2242-2248,7.DOI:10.3864/j.issn.0578-1752.2012.11.013
硅酸钠处理对厚皮甜瓜果实采后病害的控制及活性氧代谢的作用
Control of Postharvest Diseases and Potentiation of Reactive Oxygen Species Metabolism in Muskmelon (Cucumis melo L.) Fruits Treated by Sodium Silicate
摘要
Abstract
[Objective] Dipping treatment with sodium silicate on control of postharvest diseases and potentiation of reactive oxygen species metabolism in muskmelon fruits was investigated in this paper. [Method] Muskmelon (Cucumis melo L. cv. Yujinxiang) fruits were dipped at 100 mmol·L-1 of sodium silicate for 10 min, and inoculated with Trichothecium roseum 12 h after treatment. Effect of sodium silicate treatment on postharvest diseases and reactive oxygen species metabolism in muskmelon fruits was determined. [Result] Sodium silicate significantly decreased (P<0.05) the lesion diameter of fruits inoculated with T. roseum, and the natural incidence of fruits during storage at room temperature. Sodium silicate induced the accumulation of hydrogen peroxide (H2O2), and promoted the generation rate of superoxide anion (O2-). Furthermore, sodium silicate increased the catalase (CAT) activity, but inhibited the superoxide dismutase (SOD) activity in the earlier period. Sodium silicate promoted the accumulation of malondiadehyde (MDA). however, decreased the cell membrane integrity in muskmelon fruits. Inoculation sodium silicate treated fruits enhanced the generation of H2O2 and O2- and CAT activity, and maintained SOD activity. Sodium silicon-treatment also induced higher production of MDA. [Conclusion] Sodium silicate treatment decreased postharvest diseases of muskmelon fruits by regulating reactive oxygen species metabolism.关键词
甜瓜/硅酸钠/果实/采后病害/活性氧Key words
Cucumis melo L./ sodium silicate/ fruit/ postharvest diseases/ reactive oxygen species引用本文复制引用
王云飞,毕阳,任亚琳,王毅,范存斐,李大强,杨志敏..硅酸钠处理对厚皮甜瓜果实采后病害的控制及活性氧代谢的作用[J].中国农业科学,2012,45(11):2242-2248,7.基金项目
国家自然科学基金面上项目(31071835) （31071835）
