Kinase activity is required for the receptor kinase DROOPY LEAF1 to control leaf droopiness

Kinase activity is required for the receptor kinase DROOPY LEAF1 to control leaf droopiness
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受体激酶 DROOPY LEAF1 需要激酶活性来控制叶片下垂

DOI:
10.1080/15592324.2021.1976561
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发表时间:
2021-09
影响因子:
2.9
通讯作者:
Zhao meicheng
Zhao meicheng
中科院分区:
生物学4区
文献类型:
--
作者:
Wang chunfang;Tang sha;Zhang qi;Shang zhonglin;Liu xigang;Diao xianmin;Zhao meicheng

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植物进化出许多富含亮氨酸的重复序列受体样激酶(LRR-RLKs),它们以激酶依赖或非依赖的方式控制植物生命的各个方面。DROOPY LEAF 1(DPY 1)是一个亚家族II .LRR-RLK真实激酶,通过负调控谷子早期油菜素类固醇(BR)信号来控制叶片下垂。在这项研究中,我们证明过表达激酶失活的DPY 1不能挽救dpy 1植物的下垂叶表型,因为突变的DPY 1不能抑制BR信号传导,这表明DPY 1控制BR信号传导需要激酶活性。此外,7个DPY 1位点。潜在的转磷酸化SiBAK 1被确定为DPY 1激活的关键。这些发现突出了激酶活性对于DPY 1功能的重要性。
Plants have evolved many leucine-rich repeat receptor-like kinases (LRR-RLKs) that control all aspects of .plant life in a kinase-dependent or -independent manner. DROOPY LEAF1 (DPY1), which is a subfamily II .LRR-RLK authentic kinase, controls leaf droopiness by negatively regulating early brassinosteroid (BR) .signaling in foxtail millet. In this study, we proved that overexpressing kinase-inactive DPY1 does not .rescue the droopy leaf phenotype of dpy1 plants because the mutated DPY1 cannot repress BR signaling, .suggesting that kinase activity is required for DPY1 to control BR signaling. Moreover, seven DPY1 sites .potentially transphosphorylated by SiBAK1 were identified as crucial for DPY1 activation. These findings .highlight the importance of kinase activity for the functionality of DPY1.
拟南芥富含亮氨酸的重复受体激酶 BIR3 负向调节 BAK1 受体复合物的形成并稳定 BAK1
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