A freezing responsive UDP-glycosyltransferase improves potato freezing tolerance via modifying flavonoid metabolism

文献类型: 外文期刊

第一作者: Bao, Huihui

作者: Bao, Huihui;Luo, Yongchao;Zhang, Zhenjie;Wang, Jinglei;Zhu, Guangtao;Yuan, Li;Jing, Xinyu

作者机构:

关键词: Solanum commersonii; Cold stress; Freezing tolerance; UDP-glycosyltransferase; Flavonoid metabolism; ROS

期刊名称:HORTICULTURAL PLANT JOURNAL ( 影响因子:6.2; 五年影响因子:6.1 )

ISSN: 2095-9885

年卷期: 2025 年 11 卷 4 期

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收录情况: SCI

摘要: Potato (Solanum tuberosum) is a globally important staple crop. However, cultivated potato varieties are highly sensitive to low temperatures. The molecular mechanisms underlying freezing resistance in potatoes remain poorly understood. Through comparative metabolome and transcriptome analyses of freezing-tolerant (CM, Solanum commersonii) and freezing-sensitive (DM, DM1-3 516R44) varieties, we identified a cold-induced UDP-glycosyltransferase gene, ScUGT73B4, which is associated with the accumulation of glycosylated flavonoids in wild CM varieties. Overexpression of ScUGT73B4 led to increased accumulation of glycosylated flavonoids and enhanced antioxidant capacity, resulting in improved freezing tolerance in potato plantlets. These findings reveal a UDP-glycosyltransferase in the flavonoid pathway and offer a potential valuable genetic resource for breeding potatoes with improved freezing tolerance.

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