磷酸化依赖性激活 bHLH 转录因子 ICE1/SCRM 可促进拟南芥子实体的极化。

IF 8.1 1区 生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2024-11-14 DOI:10.1111/nph.20265
Houming Chen, Feng Xiong, Alexa-Maria Wangler, Torren Bischoff, Kai Wang, Yingjing Miao, Daniel Slane, Rebecca Schwab, Thomas Laux, Martin Bayer
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引用次数: 0

摘要

在拟南芥中，合子的不对称细胞分裂（ACD）分别产生胚胎本体和胚外悬丝。这一过程受 ERECTA-YODA-MPK3/6 受体激酶-MAP 激酶信号通路的控制，该通路还协调表皮中的不对称细胞分裂。在这种情况下，bHLH 转录因子 ICE1/SCRM 受 MPK3/6 引导的磷酸化负向控制。然而，这一调控模块是否同样参与了合子ACD的调控尚不清楚。我们通过分析功能缺失等位基因和不能被MPK3/6磷酸化的变体的影响、蛋白积累和靶基因表达，研究了SCRM在子代极化中的功能。我们的研究结果表明，SCRM 在子代极化过程中具有关键功能，并与已知的 MPK3/6 靶标 WRKY2 在激活 WOX8 的过程中并行发挥作用。我们的工作进一步证明，SCRM 在早期胚胎中的活性受到 MPK3/6 介导的磷酸化的积极控制。因此，MAP 激酶引导的磷酸化对同一靶蛋白的影响在胚胎和表皮之间存在本质区别，从而揭示了细胞类型特异性、共同信号通路对不同基因的调控。
本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Phosphorylation-dependent activation of the bHLH transcription factor ICE1/SCRM promotes polarization of the Arabidopsis zygote

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来源期刊
New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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