Postharvest 24-epibrassinolide treatment improves chilling resistance of peach fruit via PpHDT1 modulating brassinosteroid metabolism
文献类型： 外文期刊
作者： Hu, Shunqing 1 ; Xie, Bing 2 ; Hou, Yuanyuan 3 ; Zhao, Liangyi 4 ; Zheng, Yonghua 4 ; Jin, Peng 4 ;
作者机构： 1.Shandong Inst Pomol, Tai An 271000, Peoples R China
2.Tarim Univ, Coll Food Sci & Engn, Alaer 843300, Peoples R China
3.Xinjiang Univ, Coll Life Sci & Technol, Urumqi 830046, Peoples R China
4.Nanjing Agr Univ, Coll Food Sci & Technol, Nanjing 210095, Peoples R China
关键词： Peach; 24-Epibrassinolide; Chilling injury; PpHDT1; Brassinosteroid metabolism
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.5； 五年影响因子：6.4 ）
ISSN： 0981-9428
年卷期： 2023 年 204 卷
页码：
收录情况： SCI
摘要： Brassinosteroids (BRs) exhibit a positive effect on facilitating chilling resistance in fruits and vegetables. However, the change and regulatory mechanism of BR metabolism in fruits and vegetables are poorly understood. This study aimed to explore the underlying relationship among chilling injury (CI), BR metabolism and regulatory factor PpHDT1. The results showed that exogenous 24-epibrassinolide (EBR) retarded peaches CI, reduced endogenous brassinolide (BL) accumulation, repressed the transcriptions of BR synthesis-related genes, promoted expression of BR signal-related genes. The results of molecular assays in vivo demonstrated that PpHDT1 downregulated BR synthesis gene PpDWF4 and up-regulated BR signal transduction gene PpBZR1. Moreover, EBR treatment enhanced PpHDT1 expression, revealing that EBR treatment might alleviate peaches CI through PpHDT1 modulating BL metabolism and signal pathway. Our study provides a new insight into the underlying mechanism of EBR on regulating chilling resistance in postharvest peaches.
- 相关文献
