The occurrence of chilling injury is closely related to changes in wax. In this study, we investigated the relationship in plum fruit between wax presence (CK) and removal of epicuticular wax (REW) based on micromorphology and metabolomics. The results showed that wax reduced the incidence of chilling injury in plum fruit and slowed down the rate of loss of fruit firmness, and that the abundant wax structure not only protected the epidermal cells but also inhibited high-intensity respiration of the fruit. The correlation analysis between wax components and chilling injury illustrated that triterpene components were positively correlated with the occurrence of chilling injury. In summary, the present study revealed that wax components were involved in regulating chilling injury in plums, which provides a research idea to delay and reduce the occurrence of chilling injury in plums.

中文翻译：

---

揭示表皮蜡成分在李子采后寒冷损伤中的关键作用 （Prunus Salicina Lindl.）


冷伤的发生与蜡的变化密切相关。在这项研究中，我们基于微形态学和代谢组学研究了李子果实中蜡质存在 （CK） 和表皮蜡去除 （REW） 之间的关系。结果表明，蜡质降低了李子果实冷害的发生率，减缓了果实硬度的丧失速度，丰富的蜡质结构不仅保护了李子果实的表皮细胞，还抑制了果实的高强度呼吸。蜡成分与冷害的相关性分析表明，三萜成分与冷害的发生呈正相关。综上所述，本研究揭示了蜡成分参与调节李子冷害，为延缓和减少李子冷害的发生提供了研究思路。