Mechanisms of Litchi Response to Postharvest Energy Deficiency via Energy and Sugar Metabolisms

文献类型： 外文期刊

第一作者： Zhao, Kunkun

作者： Zhao, Kunkun;Gao, Zhaoyin;Wang, Jiabao;Nizamani, Mir Muhammad;Hu, Meijiao;Li, Min;Li, Xiaohui

作者机构：

关键词： litchi; quality; 2,4-dinitrophenol; energy metabolism; sugar metabolism

期刊名称：FOODS （ 影响因子：4.7； 五年影响因子：5.1 ）

ISSN：

年卷期： 2024 年 13 卷 14 期

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收录情况： SCI

摘要： In the post-harvest phase, fruit is inexorably subjected to extrinsic stressors that expedite energy expenditure and truncate the storage lifespan. The present study endeavors to elucidate the response strategies of litchi to the alterations of energy state caused by 2,4-Dinitrophenol (DNP) treatment through energy metabolism and sugar metabolism. It was observed that the DNP treatment reduced the energy state of the fruit, exacerbated membrane damage and triggered rapid browning in the pericarp after 24 h of storage. Furthermore, the expression of genes germane to energy metabolism (LcAtpB, LcAOX1, LcUCP1, LcAAC1, and, LcSnRK2) reached their peak within the initial 24 h of storage, accompanied by an elevation in the respiratory rate, which effectively suppressed the rise in browning index of litchi pericarp. The study also posits that, to cope with the decrease of energy levels and membrane damage, litchi may augment the concentrations of fructose, glucose, inositol, galactose, and sorbose, thus safeguarding the canonical metabolic functions of the fruit. Collectively, these findings suggest that litchi can modulate energy and sugar metabolism to cope with fruit senescence under conditions of energy deficiency. This study significantly advances the understanding of the physiological responses exhibited by litchi fruit to post-harvest external stressors.

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