Cytokinin Perception Also Starts at the Plasma Membrane

编号 040026705

推送时间 20201130

研究领域 森林培育 

年份 2020 

类型 期刊 

语种 英语

标题 Cytokinin Perception Also Starts at the Plasma Membrane

来源期刊 Molecular Plant

期 第267期

发表时间 20200926

关键词 cytokinin perception;  plasma membrane;  endoplasmic reticulum (ER);  plasma membrane (PM); 

摘要 The plant hormone cytokinin regulates diverse biological processes, including embryogenesis, cell division and differentiation, root and shoot architecture, vascular development, and formation of shoot and root lateral organs. The endoplasmic reticulum (ER) is considered as the primary cytokinin perception site based on the known subcellular localization of the cytokinin receptors. In the canonical cytokinin signaling pathway, the perception of cytokinin starts with the CHASE domain- containing AHK ( Arabidopsis histidine kinase) receptors, which are located primarily in the ER. Upon perception through AHKs, AHPs ( Arabidopsis histidine phosphotransferases) act as intermediates to transfer a phosphate from AHKs to the downstream type B ARRs ( Arabidopsis response regulators) for initiating a cytokinin-mediated transcriptional response. A previous study, however, suggested that cytokinin signaling could also initiate from the plasma membrane (PM) ( Zürcher et al., 2016 ). Two recent reports confirmed the role of PM-localized AHKs in the perception of extracellular cytokinin

服务人员 孙小满

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