和而不同:根毛发育过程中生长素与氧化还原信号  

Harmony in Diversity:Auxin and Redox Signaling During Root Hair Development

作　　者：谢彦杰 XIE Yan-jie(College of Life Sciences,Nanjing Forestry University,Nanjing 210037;College of Life Sciences,Nanjing Agricultural University,Nanjing 210095)

机构地区：[1]南京林业大学生命科学学院,南京210037 [2]南京农业大学生命科学学院,南京210095

出　　处：《生物技术通报》2024年第6期1-4,共4页Biotechnology Bulletin

基　　金：江苏省基础研究计划杰出青年基金项目(BK20220084)。

摘　　要：活性氧与生长素在植物生长发育过程中均发挥着重要作用,它们的信号转导与调控机制一直是植物科学研究的重要领域。细胞核内经典通路TIR1/AFB-Aux/IAA-ARF通过转录调控来介导生长素信号,然而生长素信号在细胞质和细胞核之间进行传递的过程尚不清楚。近期,华东师范大学李超团队发现氧化还原信号参与了受生长素调控的根毛发育过程。生长素受体蛋白TIR1/AFB2发生氧化后促进其向细胞核迁移,启动根毛发育的生长素转录信号,而这一过程同时受上游FER/LLG1-RAC/ROP-RBOHC分子模块的调控。该研究深入解析了根毛发育过程中生长素与氧化还原信号的交谈模式,是蛋白质氧化翻译后修饰调控生物学过程的经典范式。Reactive oxygen species and auxin play important roles in plant growth and development,and their signal transduction and regulatory mechanisms have always been an important field of plant science research.The classic pathway TIR1/AFB-Aux/IAA-ARF mediates nucleic auxin signaling through transcriptional regulation.However,how auxin signal is relayed from cytoplasm to nucleus is still unclear.Recently,Prof Li Chao's team from East China Normal University discovered that redox signals are involved in the auxin-regulated root hairing process.The auxin receptor protein TIR1/AFB2 undergoes Oxi-PTMs before migrating to the nucleus,which determines the initiation of the auxin transcriptional signal for root hair development,and this step is controlled by the upstream FER/LG1-RAC/ROP-RBOHC module.The results of this research have discovered the crosstalk mechanism between auxin and redox signals,and provide a paradigm for regulating biological processes through protein Oxi-PTMs.

关 键 词：氧化还原调控 氧化翻译后修饰 生长素受体 根毛发生 

分 类 号：Q945[生物学—植物学]