肌动蛋白
细胞生物学
转录因子
MYB公司
拟南芥
蛋白质丝
调节器
肌动蛋白细胞骨架
肌动蛋白结合蛋白
化学
细胞骨架
突变体
生物
生物化学
细胞
基因
作者
Lu Wang,Tianqi Qiu,Jianru Yue,Nannan Guo,Yunjian He,Xiaohu Han,Qiuyang Wang,Puyou Jia,Hongdan Wang,Muzi Li,Wang Che,Wang Xl
出处
期刊:Plant and Cell Physiology
[Oxford University Press]
日期:2021-06-04
卷期号:62 (9): 1387-1395
被引量:26
摘要
Actin cytoskeleton and transcription factors play key roles in plant response to salt stress; however, little is known about the link between the two regulators in response to salt stress. Actin-depolymerizing factors (ADFs) are conserved actin-binding proteins in eukaryotes. Here, we revealed that the expression level of ADF1 was induced by salt stress. The adf1 mutants showed significantly reduced survival rate, increased percentage of actin cable and reduced density of actin filaments, while ADF1 overexpression seedlings displayed the opposite results when compared with WT under the same condition. Furthermore, biochemical assays revealed that MYB73, a R2R3 MYB transcription factor, binds to the promoter of ADF1 and represses its expression via the MYB-binding site core motif ACCTAC. Taken together, our results indicate that ADF1 participates in salt stress by regulating actin organization and may also serve as a potential downstream target of MYB73, which is a negative regulator of salt stress.
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