Effects of Saline-Alkali Stress on Sugar Metabolism of Jujube Fruit: A Metabolomic Analysis

作者：Yan Wang, Yifeng Feng, Min Yan, Xiaofeng Zhou, Yuan Ze, Qiaoqiao Zhang, Haoyu Yan, Cuiyun Wu · 发表于：Agronomy · 年份：2023 · DOI：10.3390/agronomy13092239 · 被引用次数：10 · 研究领域：Ziziphus Jujuba Studies and Applications、Ginseng Biological Effects and Applications、Plant Physiology and Cultivation Studies

There have been numerous studies on the effects of salt stress on jujube fruit; however, only a few studies have reported the changes in fruit quality, particularly sugar content, under conditions of combined salt and alkali stress. Therefore, the present study aimed to investigate the performance of jujube fruits under Saline-Alkali stress and the changes in sugar content in fruits. To achieve this, jujube fruits were treated with varying concentrations of salt and alkali during five developmental periods. The content of relevant sugar components was determined, and metabolomics data were analyzed in combination with relevant quantitative gene data. The results indicated that 100 days after flowering, the surface color of jujube fruit gradually turned red, and the cell structure of the fruit gradually loosened with increasing salt and alkali concentration. The content of sugar components at each stage showed that glucose and fructose primarily accumulate in the early stage of development, while sucrose is the main component in the later stage of development. Metabolomic correlation network maps showed that six differentially accumulated metabolites were closely related to specific genes. Among these metabolites, sucrose was identified as the core metabolite in the metabolic pathway. Quantitative analysis of the related genes revealed that ZjvINV2 and ZjHK2 exhibited prolonged adaptability to stress. Additionally, the expression levels of ZjSS1 and ZjSPS2 under Saline-Alkali ...