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Effects of 1-methylcyclopropene on surface wax and related gene expression in cold-stored 'Hongxiangsu' pears

文献类型： 外文期刊

作者： Li, Dan 1 ; Cheng, Yudou 2 ; Guan, Junfeng 2 ;

作者机构： 1.Hebei Normal Univ, Coll Life Sci, Shijiazhuang, Hebei, Peoples R China

2.Hebei Acad Agr & Forestry Sci, Inst Genet & Physiol, Shijiazhuang 050051, Hebei, Peoples R China

3.Plant Genet Engn Ctr Hebei Prov, Shijiazhuang, Hebei, Peoples R China

关键词： 1-methylcyclopropene; Cuticular wax; Gene expression; Cold storage

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： 2019 年 99 卷 5 期

页码：

收录情况： SCI

摘要： BACKGROUND Surface wax protects fruit from dehydration and pathogen erosion during storage. The surface wax of pears changes greatly during storage. In this work, the effect of ethylene action inhibitor 1-methylcyclopropene on wax accumulation and related gene expression in 'Hongxiangsu' pears during cold storage was investigated. RESULTS The alkanes, alkenes, fatty acids, esters, aldehydes and triterpenoids on the fruit surface accumulated and peaked at day 180, but fatty alcohols decreased before day 90 and then increased in the control. Treatment with 1-MCP (1.0 mu L L-1) reduced surface wax at day 180 of storage. Compared with the control, the wax crystals became smaller in 1-MCP-treated fruit on days 90 and 270. The 1-MCP decreased the expression levels of ethylene synthesis, perception and signal genes ACS1, ACO1, ERS1, ETR2, ERF1 and wax-related genes (LACS1, LACS2, KCS2, KCS9, KCS20, FDH, CER6, CER10, LTPG1, LTP3, LTP4, ABCG11 and ABCG12). CONCLUSION These results suggested that 1-MCP suppressed ethylene synthesis and signal-pathway and wax-related gene expression; it also reduced the wax and the size of crystals on the fruit surface in cold-stored 'Hongxiangsu' pears. (c) 2018 Society of Chemical Industry

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