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Updated: Mar 2, 2026

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免疫激活重新编程生长mRNA稳定性,以塑造植物生长-防御权衡

Guilong Zhou¹, Ruixia Niu¹, Sitao Zhu¹

¹State Key Laboratory of Hybrid Rice, Hubei Provincial Research Center for Basic Biological Sciences, Hubei Hongshan Laboratory, RNA Institute, Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, China.

Cell host & microbe

|February 28, 2026

概括

植物的免疫反应通常会阻碍生长. 这项研究揭示了聚皮里米丁通路结合蛋白3 (PTBP3) 在免疫过程中破坏了生长mRNA的稳定性,并且破坏了这种增强疾病抵抗力和生长弹性.

科学领域:

植物的免疫和防御机制.
转录后的基因调节
植物的生长和发展.

背景情况:

植物的免疫激活可以增强防御能力,但会抑制生长,这是一种限制持久耐药性的权衡.
虽然已知免疫反应期间的选择性mRNA转化,但增长mRNA的转录后调节仍然不清楚.

研究的目的:

研究在植物免疫激活过程中调节生长mRNA的转录后机制.
为了确定参与控制生长防御权衡的RNA结合蛋白.

主要方法:

在Arabidopsis中进行网络层面的分析,以确定RNA结合蛋白质依赖的机制.
在mRNA不稳定中,聚胺管结合蛋白3 (PTBP3) 功能的表征.
对已识别的途径进行实验性干扰,以评估对疾病耐药性和生长的影响.

主要成果:

确定了一种机制,在免疫激活时,PTBP3可以选择性地破坏与生长相关的mRNA的稳定.
PTBP3 识别了富含胺的元素,在免疫诱导后凝结,并形成了针对生长基因的mRNA降解枢纽.
破坏 PTBP3 途径增强了疾病抵抗力,并在免疫应激下改善了生长弹性.

结论:

增长mRNA稳定性的转录后控制是平衡增长和防御的关键调节层.
增长mRNA的PTBP3介导的破坏稳定是增长防御权衡的关键组成部分.
针对这种途径提供了一种策略,可以在不影响生长的情况下加强植物免疫力.

关键词:

降解RNA的降解RNA的降解在RNA调节过程中,RNA调节 RNA结合蛋白质是RNA结合的蛋白质.基因表达的基因表达方式增长 mRNA 的增长 mRNA.增长的弹性增长的弹性增长-防御的权衡权衡.植物免疫策略植物免疫策略转录后的控制转录后的控制翻译控制的翻译控制

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