Mengyun Guo, Yingjun Yao, Kangqun Yin, Luna Tan, Meng Liu, Jing Hou, Han Zhang, Ruyun Liang, Xinran Zhang, Heng Yang, Xiaoxiao Chen, Jinrui Tan, Yan Song, Shangling Lou, Liyang Chen, Xuejing Liu, Si Tang, Yongqi Hu, Jin Yan, Wensen Fu, Kai Yang, Ruijia Zhang, Xuerui Li, Yao Liu, Zhen Yan, Wei Liu, Yu Han, Jianquan Liu, Kangshan Mao, Huanhuan Liu
ACYL-CoA-BINDING PROTEINs (ACBPs) play crucial regulatory roles during plant response to hypoxia, but their molecular mechanisms remain poorly understood. Our study reveals that ACBP4 serves as a positive regulator of the plant hypoxia response by interacting with WRKY70, influencing its nucleocytoplasmic shuttling in Arabidopsis thaliana. Furthermore, we demonstrate the direct binding of WRKY70 to the ACBP4 promoter, resulting in its upregulation and suggesting a positive feedback loop. Additionally, we pinpointed a phosphorylation site at Ser638 of ACBP4, which enhances submergence tolerance, potentially by facilitating WRKY70's nuclear shuttling...
March 19, 2024: Journal of Integrative Plant Biology