脱落酸
茉莉酸
串扰
茉莉酸
拟南芥
细胞生物学
生物
拟南芥
警卫室
信号转导
突变体
植物激素
转录因子
生物化学
化学
双分子荧光互补
非生物胁迫
生长素
MYB公司
水杨酸
基因
物理
光学
作者
Jianping An,Rui Xu,Xin Liu,Ling Su,Kuo Yang,Xiaofei Wang,Gui-Luan Wang,Chun‐Xiang You
摘要
Abscisic acid is involved in the regulation of cold stress response, but its molecular mechanism remains to be elucidated. In this study, we demonstrated that the APETALA2/ethylene responsive factor (AP2/ERF) family protein MdABI4 positively regulates abscisic acid-mediated cold tolerance in apple. We found that MdABI4 interacts with MdICE1, a key regulatory protein involved in the cold stress response, and enhances the transcriptional regulatory function of MdICE1 on its downstream target gene MdCBF1, thus improving abscisic acid-mediated cold tolerance. The jasmonate-ZIM domain (JAZ) proteins MdJAZ1 and MdJAZ2 negatively modulate MdABI4-improved cold tolerance in apple by interacting with the MdABI4 protein. Further investigation showed that MdJAZ1 and MdJAZ2 interfere with the interaction between the MdABI4 and MdICE1 proteins. Together, our data revealed that MdABI4 integrates jasmonic acid and abscisic acid signals to precisely modulate cold tolerance in apple through the JAZ-ABI4-ICE1-CBF regulatory cascade. These findings provide insights into the crosstalk between jasmonic acid and abscisic acid signals in response to cold stress.
科研通智能强力驱动
Strongly Powered by AbleSci AI