Epibrassinolide enhanced chilling tolerance of postharvest banana fruit by regulating energy status and pyridine nucleotide homeostasis
文献类型： 外文期刊
作者： Li, Dong 1 ; Wu, Xiaohan 1 ; Li, Li 1 ; Wang, Yansheng 2 ; Xu, Yanqun 1 ; Luo, Zisheng 1 ;
作者机构： 1.Zhejiang Univ, Natl Local Joint Engn Lab Intelligent Food Techno, Key Lab Agroprod Postharvest Handling,Minist Agr, Coll Biosystems Engn & Food Sci,Zhejiang Key Lab, Hangzhou 310058, Zhejiang, Peoples R China
2.Shandong Acad Agr Sci, Inst Agrofood Sci & Technol, Jinan 250100, Shandong, Peoples R China
3.Zhejiang Univ, Ningbo Res Inst, Ningbo 315100, Zhejiang, Peoples R China
4.Fuli Inst Food Sci, Hangzhou 310058, Zhejiang, Peoples R China
关键词： Epibrassinolide; Banana fruit; Chilling; Energy metabolism; Pyridine nucleotide homeostasis
期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）
ISSN： 0308-8146
年卷期： 2022 年 382 卷
页码：
收录情况： SCI
摘要： Chilling injury occurs in banana fruit under cold storage, which decreases commercial value and limits the shelf life. Here, exogenous epibrassinolide was applied to investigate its regulation on chilling tolerance. The results found 2.5 mu mol/L epibrassinolide was the optimal concentration to reduce chilling injury, which showed 23% lower chilling injury index compared with the control. Epibrassinolide alleviated the symptoms of chilling injury, including maintaining total chlorophyll, as well as reducing browning index, electrolyte leakage, and MDA. Energy status assay showed 7% higher energy charge was observed in epibrassinolide-treated fruit, which was due to the increase of SDH, CCO, and NADH/NAD(+)& nbsp;ratio. In addition, the activation of NADK and PPP pathway induced the increase of NADPH and NADPH/NADP(+) ratio, which inhibited H2O2 accumulation and O-2(.)- production rate, and thus alleviated chilling injury. This study clarified the potential regulation of epibrassinolide on the balance of energy metabolism and pyridine nucleotide homeostasis.
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