γ-Aminobutyric acid treatment reduces the chilling injury and quality deterioration of Chinese olives during cold storage through regulating the metabolisms of respiration and energy

IF 3.9 2区农林科学 Q1 HORTICULTURE

Scientia Horticulturae Pub Date : 2025-02-15 DOI:10.1016/j.scienta.2025.114046

Yunman Chen , Bin Lin , Yifan Wen , Yueying Sang , Mengshi Lin , Shucheng Li , Zhongqi Fan , Yifen Lin , Hetong Lin

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引用次数: 0

Abstract

Chilling injury (CI) is one of the main symptoms of quality deterioration in cold-stored Chinese olives, leading to the rapid declines of nutrition and commercial value. This work explored the efficacy of 1.0 mM γ-aminobutyric acid (GABA) treatment on the respiratory and energy metabolisms in Chinese olives during cold storage at 2 °C and its relationship with CI development and quality attributes. The Chinese olives were immersed in distilled water and 1.0 mM GABA solution for 10 min, respectively. Compared with the control samples, the GABA-treated Chinese olives presented lower levels of fruit CI index and weight loss percentage, and lower contents of pericarp carotenoid and pulp reducing sugar. Conversely, the GABA-treated samples showed a higher percentage of the commercially acceptable fruit, a higher pericarp h° value, higher levels of pericarp chlorophyll and pulp total soluble solids, titratable acidity, tannin, vitamin C, total soluble sugar, and sucrose. Additionally, the GABA-treated samples showed lower respiration rate, lower activities of phosphoglucose isomerase, succinate dehydrogenase, cytochrome C oxidase, and ascorbic acid oxidase, lower values of nicotinamide adenine dinucleotide (NAD) and the reduced form of NAD (NADH), and lower content of adenosine monophosphate, but higher activities of glucose-6-phosphate dehydrogenase + 6-phosphogluconate dehydrogenase, nicotinamide adenine dinucleotide kinase, H⁺, Ca²⁺, and Mg²⁺-ATPase, higher values of nicotinamide adenine dinucleotide phosphate (NADP) and the reduced form of NADP (NADPH), and higher contents of adenosine triphosphate, adenosine diphosphate, and energy charge. These findings elucidate that the alleviating effects of GABA on the CI occurrence and quality deterioration in Chinese olives during cold storage are related to the inhibition of respiratory metabolism and the maintenance of a higher energy status.

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来源期刊

Scientia Horticulturae 农林科学-园艺

CiteScore

8.60

自引率

4.70%

发文量

796

审稿时长

47 days

期刊介绍： Scientia Horticulturae is an international journal publishing research related to horticultural crops. Articles in the journal deal with open or protected production of vegetables, fruits, edible fungi and ornamentals under temperate, subtropical and tropical conditions. Papers in related areas (biochemistry, micropropagation, soil science, plant breeding, plant physiology, phytopathology, etc.) are considered, if they contain information of direct significance to horticulture. Papers on the technical aspects of horticulture (engineering, crop processing, storage, transport etc.) are accepted for publication only if they relate directly to the living product. In the case of plantation crops, those yielding a product that may be used fresh (e.g. tropical vegetables, citrus, bananas, and other fruits) will be considered, while those papers describing the processing of the product (e.g. rubber, tobacco, and quinine) will not. The scope of the journal includes all horticultural crops but does not include speciality crops such as, medicinal crops or forestry crops, such as bamboo. Basic molecular studies without any direct application in horticulture will not be considered for this journal.