Effects of 1-methylcyclopropene on superficial scald and related metabolism in 'Wujiuxiang' pear during cold storage

文献类型： 外文期刊

第一作者： Gao, Manman

作者： Gao, Manman;Zhou, Shuo;Guan, Junfeng;Zhang, Yingying;Gao, Manman;Zhou, Shuo;Guan, Junfeng;Zhang, Yingying

作者机构：

期刊名称：JOURNAL OF APPLIED BOTANY AND FOOD QUALITY （ 影响因子：1.451； 五年影响因子：1.73 ）

ISSN： 1439-040X

年卷期： 2015 年 88 卷

页码：

收录情况： SCI

摘要： 'Wujiuxiang' (Pyrus bretschneideri R. x Pyrus communis L.) pear often suffers from superficial scald after a long-term of cold storage. In this study, harvested 'Wujiuxiang' pear fruits were fumigated with 1-methylcyclopropene (1-MCP) at concentrations of 0.5 mu L/L and 1.0 mu L/L and subsequently stored at low temperature (0 degrees C). The superficial scald index; flesh firmness; total soluble solids (TSS) content; respiration and ethylene production rates; relative membrane permeability; contents of alpha-farnesene, conjugated trienols (CTols) and hydrogen peroxide (H2O2); and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and lipoxygenase (LOX) of the peel were investigated. The results showed that compared with control, 1-MCP reduced the index of superficial scald; maintained a higher firmness and a lower TSS content; inhibited the accumulation of H2O2, alpha-farnesene and conjugated trienols and the increase in cell membrane permeability; and maintained a higher activity of APX, SOD and CAT and a lower activity of LOX. These findings indicate that 1-MCP regulates the activities of H2O2-scavenging enzymes to inhibit the accumulation of H2O2 and thereby reduces cell membrane damage and inhibits the accumulation of conjugated trienols. Thus, 1-MCP could decrease the incidence of superficial scald in 'Wujiuxiang' pear.

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