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iTRAQ-based protein profiling of peach fruit during ripening and senescence under different temperatures

文献类型： 外文期刊

作者： Huan, Chen 1 ; Xu, Yin 2 ; An, Xiujuan 2 ; Yu, Mingliang 3 ; Ma, Ruijuan 3 ; Zheng, Xiaolin 1 ; Yu, Zhifang 2 ;

作者机构： 1.Zhejiang Gongshang Univ, Coll Food Sci & Biotechnol, Hangzhou 310035, Zhejiang, Peoples R China

2.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Pomol, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing 210095, Jiangsu, Peoples R China

关键词： Peach fruit; ITRAQ; Proteomics; Temperature; Ripening and senescence

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：5.537； 五年影响因子：5.821 ）

ISSN： 0925-5214

年卷期： 2019 年 151 卷

页码：

收录情况： SCI

摘要： Ripening and senescence of postharvest fruit under different storage conditions involve different physiological and biochemical processes, but there is still limited knowledge available at proteomic level. In this study, an iTRAQ-based proteomic study was carried out to investigate the protein changes involved in peach fruit ripening and senescence at room temperature (RT, 25 +/- 1 degrees C) and low temperature (LT, 4 +/- 1 degrees C), respectively. A total of 325 proteins were identified as differentially expressed proteins (DEPs) which were mainly related to carbohydrate and energy metabolism, lipid metabolism, amino acid metabolism, signal transduction and stress response and defence. The changes of DEPs indicated that LT storage could significantly affect conversion of starch to fructose and glucose, regulate antioxidant ability and suppress transduction of Ca2+ signal, which might contribute to the extension of storage life in peach fruit. Meanwhile, long term LT storage could cause oxidative stress, cell wall degradation and flavor loss in peach fruit during the late stage of storage. In contrast, only limited metabolic processes could be affected in peach fruit during RT storage, including suppression of sucrose synthesis and fructose phosphorylation, as well as enhancement of ABA signal and oxidative stress.

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