Sweetpotato (Ipomoea batatas [L.] Lam) is highly adaptable to different soils and climates, but it is more sensitive to cold due to its tropical origin. Low‐temperature stress is a key factor affecting storage and has a significant impact on sweetpotato quality. During sweetpotato storage, prolonged exposure to low temperatures causes chilling damage to the root system, altering its physiological functions. This is manifested by wilting of the tuberous roots, nutrient loss, and reduced antioxidant enzyme activity. At the same time, it leads to a significant downregulation of genes associated with cold signaling pathways. Understanding the physiological and molecular mechanisms of sweetpotato's response to low‐temperature stress, which is crucial for improving its quality during storage. In addition, methods such as high‐voltage alternating electric field, controlled atmosphere, hot water treatment, and hot air treatment can better preserve the nutrients of sweetpotato and maintain their high commercial quality during low‐temperature storage. This article reviews and summarizes key studies on the nutrient and physiological changes, as well as the molecular regulatory mechanisms of sweetpotato during low‐temperature storage, and identifies unresolved questions in this field. It provides insights for further research on low‐temperature stress in sweetpotato.

中文翻译：

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甘薯对低温胁迫反应的生理变化和分子调控


甘薯 （Ipomoea batatas [L.] Lam） 对不同的土壤和气候具有很强的适应性，但由于它起源于热带，因此对寒冷更敏感。低温胁迫是影响甘薯贮藏的关键因素，对甘薯品质有重大影响。在甘薯贮藏过程中，长时间暴露在低温下会对根系造成寒冷的损害，从而改变其生理功能。这表现为块茎根枯萎、养分流失和抗氧化酶活性降低。同时，它导致与冷信号通路相关的基因显著下调。了解甘薯对低温胁迫反应的生理和分子机制，这对于提高其储存质量至关重要。此外，高压交变电场、气调、热水处理和热风处理等方法可以更好地保存甘薯的营养成分，并在低温贮藏期间保持其较高的商业品质。本文综述和总结了甘薯低温贮藏过程中营养物质和生理变化以及分子调控机制的关键研究，并确定了该领域尚未解决的问题。它为进一步研究甘薯低温胁迫提供了见解。