The molecular basis of superficial scald development related to ethylene perception and alpha-farnesene metabolism in 'Wujiuxiang' pear

文献类型： 外文期刊

第一作者： Zhou, Shuo

作者： Zhou, Shuo;Cheng, Yudou;Guan, Junfeng;Zhou, Shuo;Cheng, Yudou;Guan, Junfeng

作者机构：

关键词： Superficial scald;Ethylene;1-Methylcyclopropene;alpha-Farnesene;Glutathione S-transferase

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

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收录情况： SCI

摘要： Superficial scald is a major disorder that may occur in pear fruits following long-term cold storage. In this study, harvested Wujiuxiang' pears (Pyrus communis L) were treated with 1.0 mu L/L 1-methylcyclopropene (1-MCP), stored at 0 degrees C for 120 days, and transferred to 25 +/- 2 degrees C for seven days to simulate shelf life. The effects of 1-MCP on scald development, the expression of ethylene perception genes, and alpha-famesene metabolism and the expression of its associated genes were investigated. Compared with the control, 1-MCP reduced the scald index after 120 days of cold storage and during shelf life, suppressed the accumulation of alpha-farnesene and conjugated trienols (CTols), inhibited the expression of PcETR2, PcERS1, PcHMGR2, PcAFS1, PcGPX5, PcGSTU7, and PcGSTU17, and delayed the maximum expression of PcETR1, PcERS2, PcHMGR1, and PcGPX6. These results indicate that 1-MCP regulates the expression of target genes to inhibit ethylene action and alpha-farnesene metabolism, which contributes to slower scald development. These findings suggest that PcGPX5, PcGPX6, PcGSTU7, and PcGSTU17 are involved in CTol accumulation and scald development in 'Wujiuxiang' pear fruit. (C) 2016 Elsevier B.V. All rights reserved.

分类号： S6

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