Transcriptome and metabolome integrated analysis revealed the effects and potential mechanism of hydrogen peroxide on antioxidant system in postharvest broccoli
文献类型： 外文期刊
作者： Zhang, Yuxiao 1 ; Chen, Ying 1 ; Guo, Yanyin 1 ; Sun, Yupeng 1 ; Wang, Zhengli 1 ; Wang, Yunqiao 1 ; Guan, Lingxing 1 ; Wang, Liang 2 ; Zhou, Qingxin 2 ;
作者机构： 1.Shandong Univ Technol, Coll Agr Engn & Food Sci, Zibo 255049, Peoples R China
2.Shandong Acad Agr Sci, Inst Food & Nutr Sci & Technol, Jinan 250100, Peoples R China
关键词： Ascorbic acid; Broccoli; Glucosinolate; Glutathione; Multi-omics; Reactive oxygen species
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：7.0； 五年影响因子：6.9 ）
ISSN： 0925-5214
年卷期： 2023 年 206 卷
页码：
收录情况： SCI
摘要： To investigate the effects and potential mechanism of exogenous H2O2 on antioxidant metabolism and yellowing in postharvest broccoli, the transcriptome and metabolome integrated analysis were performed. A total of 61 differentially expressed genes and 6 differentially accumulated metabolites identified among of H2O2 and diphenylene iodonium (DPI) treatments on 2 and 4 d. Exogenous H2O2 promoted the accumulation of endogenous H2O2 within 1 d by activating RBOHs expressions.H2O2 treatment up-regulated the expressions of SOD, CAT and peroxiredoxin (Prx) genes and APX, DHAR and GPX genes involved in ascorbic acid-glutathione (AsA-GSH) cycle, thereby promoting the scavenging of O-2 '(-) and H2O2 and alleviating the oxidative damage. Additionally, H2O2 treatment promoted the biosynthesis of AsA and GSH, and increased the content of AsA, GSH, oxidized glutathione, and.-glutamylcysteine.H2O2 treatment also promoted glucosinolate biosynthesis, the accumulation of 3-(6'-methylthio)hexylmalic acid, and the production of sulforaphane by up-regulating MYS expression, thereby enhancing the health-care function of postharvest broccoli. This study provided the new insights into regulatory mechanism of H2O2 on antioxidant system.
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