Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Arabidopsis COP1 suppresses root hair development by targeting type I ACS proteins for ubiquitination and degradation
Developmental Cell ( IF 10.7 ) Pub Date : 2024-07-24 , DOI: 10.1016/j.devcel.2024.06.021 Gui-Min Yin 1 , Shan-Shan Dun 2 , En Li 2 , Fu-Rong Ge 2 , Yi-Ru Fang 1 , Dan-Dan Wang 2 , Dongping Lu 3 , Ning Ning Wang 1 , Yan Zhang 1 , Sha Li 2
Developmental Cell ( IF 10.7 ) Pub Date : 2024-07-24 , DOI: 10.1016/j.devcel.2024.06.021 Gui-Min Yin 1 , Shan-Shan Dun 2 , En Li 2 , Fu-Rong Ge 2 , Yi-Ru Fang 1 , Dan-Dan Wang 2 , Dongping Lu 3 , Ning Ning Wang 1 , Yan Zhang 1 , Sha Li 2
Affiliation
Root hairs (RHs) are an innovation of vascular plants whose development is coordinated by endogenous and environmental cues, such as ethylene and light conditions. However, the potential crosstalk between ethylene and light conditions in RH development is unclear. We report that Arabidopsis constitutive photomorphogenic 1 (COP1) integrates ethylene and light signaling to mediate RH development. Darkness suppresses RH development largely through COP1. COP1 inhibits both cell fate determination of trichoblast and tip growth of RHs based on pharmacological, genetic, and physiological analyses. Indeed, COP1 interacts with and catalyzes the ubiquitination of ACS2 and ACS6. COP1- or darkness-promoted proteasome-dependent degradation of ACS2/6 leads to a low ethylene level in underground tissues. The negative role of COP1 in RH development by downregulating ethylene signaling may be coordinated with the positive role of COP1 in hypocotyl elongation by upregulating ethylene signaling, providing an evolutionary advantage for seedling fitness.
中文翻译:
拟南芥 COP1 通过靶向 I 型 ACS 蛋白进行泛素化和降解来抑制根毛发育
根毛 (RH) 是维管植物的一种创新,其发育由内源和环境线索(如乙烯和光照条件)协调。然而,乙烯和光条件在 RH 开发中的潜在串扰尚不清楚。我们报道了拟南芥组成型光形态发生 1 (COP1) 整合乙烯和光信号传导以介导 RH 发育。黑暗主要通过 COP1 抑制 RH 的发展。COP1 根据药理学、遗传学和生理学分析抑制毛孢母细胞的细胞命运决定和 RHs 的尖端生长。事实上,COP1 与 ACS2 和 ACS6 相互作用并催化泛素化。COP1 或黑暗促进的蛋白酶体依赖性降解 ACS2/6 导致地下组织中的乙烯水平低。COP1 通过下调乙烯信号传导在 RH 发育中的负作用可能与 COP1 通过上调乙烯信号传导在下胚轴伸长中的积极作用相协调,为幼苗适应性提供进化优势。
更新日期:2024-07-24
中文翻译:
拟南芥 COP1 通过靶向 I 型 ACS 蛋白进行泛素化和降解来抑制根毛发育
根毛 (RH) 是维管植物的一种创新,其发育由内源和环境线索(如乙烯和光照条件)协调。然而,乙烯和光条件在 RH 开发中的潜在串扰尚不清楚。我们报道了拟南芥组成型光形态发生 1 (COP1) 整合乙烯和光信号传导以介导 RH 发育。黑暗主要通过 COP1 抑制 RH 的发展。COP1 根据药理学、遗传学和生理学分析抑制毛孢母细胞的细胞命运决定和 RHs 的尖端生长。事实上,COP1 与 ACS2 和 ACS6 相互作用并催化泛素化。COP1 或黑暗促进的蛋白酶体依赖性降解 ACS2/6 导致地下组织中的乙烯水平低。COP1 通过下调乙烯信号传导在 RH 发育中的负作用可能与 COP1 通过上调乙烯信号传导在下胚轴伸长中的积极作用相协调,为幼苗适应性提供进化优势。