Exogenous γ-Aminobutyric Acid Delays Chilling Injury of Harvested Kiwifruit and Relates with Reactive Oxygen Species Metabolism

被引：2

作者：

Xia M. ^{[1
]}

Zhang S. ^{[1
]}

Zhao Y. ^{[2
,3
]}

Wang Y. ^{[1
]}

He F. ^{[1
]}

Chen F. ^{[1
]}

Lin Y. ^{[3
,4
]}

Chen F. ^{[1
]}

机构：

[1] College of Ocean Food and Biological Engineering, Jimei University, Xiamen

[2] College of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng

[3] Key Laboratory of Postharvest Biology of Subtropical Special Agricultural Products, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou

[4] College of Food Science, Fujian Agriculture and Forestry University, Fuzhou

来源：

Shipin Kexue/Food Science | 2023年 / 44卷 / 19期

关键词：

ascorbate-glutathione cycle; chilling injury; kiwifruit; reactive oxygen species; γ-aminobutyric acid;

D O I：

10.7506/spkx1002-6630-20230110-066

中图分类号：

学科分类号：

摘要：

The effect of γ-aminobutyric acid (GABA) treatment on chilling injury in cold-stored kiwifruit and its relationship with reactive oxygen species (ROS) metabolism were investigated. Postharvest kiwifruit were treated with 2.0 mmol/L GABA solution for 20 min and stored at (4 ± 1) ℃ and (85 ± 5)% relative humidity. Chilling injury development was evaluated and the changes in the dynamic balance between the production and removal of ROS were analyzed. The results showed that compared with the control group, GABA treatment could delay the increases in the chilling injury index, cell membrane permeability and malondialdehyde (MDA) content of cold-stored kiwifruit, inhibit the rate of superoxide anion radical production and the increase in hydrogen peroxide content, and increase and maintain superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR) activities. Moreover, GABA treatment slowed down the decrease in the contents of ascorbic acid and glutathione, which contributed to higher antioxidant capacity levels in the fruit. The above findings indicated that exogenous GABA treatment could maintain dynamic redox balance, attenuate membrane lipid peroxidation and preserve cell membrane integrity in cold-stored kiwifruit by inhibiting the accumulation of ROS, and increasing the activities of the enzymatic and non-enzymatic ROS systems, thereby enhancing cold stress resistance and ultimately delaying chilling injury. © 2023 Chinese Chamber of Commerce. All rights reserved.

引用

页码：198 / 206

页数：8

共 23 条

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