Effect of methyl jasmonate on the quality and antioxidant capacity by modulating ascorbate-glutathione cycle in peach fruit
文献类型： 外文期刊
作者： Zhu, Lijuan 1 ; Yu, Haitao 1 ; Dai, Xiaomei 1 ; Yu, Mingliang 2 ; Yu, Zhifang 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Pomol, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing 210014, Jiangsu, Peoples R China
关键词： Peach fruit; Postharvest; MeJA; Reactive oxygen species; AsA-GSH cycle; Quality
期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.342； 五年影响因子：4.342 ）
ISSN： 0304-4238
年卷期： 2022 年 303 卷
页码：
收录情况： SCI
摘要： We investigated the effect of methyl jasmonate (MeJA) on the quality and antioxidant capacity in 'Xiahui 8' peach fruit during storage at 20 degrees C and 90-95% relative humidity (RH) for 7 days. Exogenous MeJA maintained better fruit quality during storage, as indicated by reduced weight loss, respiration rate, ethylene production and total soluble solids, as well as maintained appearance and firmness. MeJA treatment significantly improved the activities of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) in peach fruit, therefore, reducing the accumulation of superoxide anion (O-2(-)), hydrogen peroxide (H2O2) and malondialdehyde (MDA). Additionally, MeJA treatment enhanced the metabolic intensity of AsA-GSH cycle, as key enzyme activities involved in AsA-GSH cycle were markedly increased. These MeJA-promoting effect increased the content of reduced ascorbate (AsA) and glutathione (GSH), and the ratios of reduced to oxidized forms of AsA and GSH, contributing to higher redox status in peach fruit. Collectively, these results suggest that MeJA can maintain better fruit quality and improve antioxidant ability through enhancing AsA-GSH cycle, thus suitable for postharvest application.
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