Glutaredoxins regulate maize inflorescence meristem development via redox control of TGA transcriptional activity
Glutaredoxins regulate maize inflorescence meristem development via redox control of TGA transcriptional activity
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谷氧还蛋白通过氧化还原控制 TGA 转录活性来调节玉米花序分生组织发育
DOI:
10.1038/s41477-021-01029-2
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发表时间:
2021-12
期刊:
影响因子:
18
通讯作者:
Fang Yang
中科院分区:
文献类型:
--
作者:
Ruoshu Yang;Fang Xu;Yiming Wang;Wanshun Zhong;Yanni Shi;Liang Dong;Tianjiao Tang;Huangjun Sheng;David Jackson;Fang Yang
Glutaredoxins (GRXs) are small oxidoreductases that can modify target protein activities through control of the redox (reduction/oxidation) state by reducing or glutathionylating disulfide bridges. Although CC-type GRXs are plant specific and play important roles in many processes, the mechanisms by which they modulate the activity of target proteins in vivo are unknown. In this study, we show that a maize CC-type GRX,MALE STERILE CONVERTED ANTHER1(MSCA1), acts redundantly with two paralogues,ZmGRX2andZmGRX5, to modify the redox state and the activity of its putative target, the TGA transcription factorFASCIATED EAR4(FEA4) that acts as a negative regulator of inflorescence meristem development. We used CRISPR–Cas9 to create aGRXtriple knockout, resulting in severe suppression of meristem, ear and tassel growth and reduced plant height. We further show that GRXs regulate the redox state, DNA accessibility and transcriptional activities of FEA4, which acts downstream ofMSCA1and its paralogues to control inflorescence development. Our findings reveal the function ofGRXsin meristem development, and also provide direct evidence for GRX-mediated redox modification of target proteins in plants.
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