Elevated O2 alleviated anaerobic metabolism in postharvest winter jujube fruit by regulating pyruvic acid and energy metabolism

文献类型： 外文期刊

第一作者： Bao, Nina

作者： Bao, Nina;Zhang, Xingtao;Li, Dong;Li, Li;Li, Wenxuan;Xu, Yanqun;Luo, Zisheng;Xu, Yanqun;Luo, Zisheng;Han, Xueyuan;Sheng, Zhanwu;Yuan, Yaya;Luo, Zisheng

作者机构：

关键词： Elevated O 2; Winter jujube fruit; Ethanol and acetaldehyde; Pyruvic acid metabolism; Energy metabolism

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：7.0； 五年影响因子：6.9 ）

ISSN： 0925-5214

年卷期： 2023 年 203 卷

页码：

收录情况： SCI

摘要： Over-accumulation of anaerobic metabolites is a typical characteristic of postharvest senescence in winter jujube fruit. Here, elevated O2 was applied during cold storage to investigate its regulation on anaerobic respiration. The results found 60 % O2 was the optimal concentration to inhibit anaerobic respiration, which showed 83.82 % lower acetaldehyde and 57.13 % lower ethanol compared with control. Elevated O2 maintained energy status by activating succinate dehydrogenase and cytochrome C oxidase, with 1.11-fold higher energy charge observed as compared with the control. In addition, activated aerobic respiration also accelerated the consumption of pyruvic acid, and pyruvic acid content was reduced by 63 % in elevated O2-treated fruit. Sufficient energy supply and reduced pyruvic acid content in elevated O2-treated fruit induced the alleviation of anaerobic respiration, leading to attenuating the accumulation of ethanol and acetaldehyde as a result. The study proved elevated O2 repressed anaerobic metabolism by regulating pyruvic acid level and energy metabolism.

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