对翻译后修改动态的分析揭示了对大米对MSP1反应的新见解
Gi Hyun Lee1, Cheol Woo Min1, Jeong Woo Jang1
1Department of Plant Bioscience, Pusan National University, Miryang 50463, South Korea.
Journal of proteomics
|July 19, 2023
概括
麦格纳波特米 (Magnaporthe oryzae snodprot1) 同源蛋白 (MSP1) 触发了大米的免疫力. 这项研究揭示了MSP1如何改变蛋白质酸化,无化和乙化,揭示了大米防御信号中的关键调节机制.
科学领域:
- 植物病理学和分子生物学
- 植物免疫和翻译后的修改
背景情况:
- 麦格纳波特或瑞泽斯诺德普罗特1同源蛋白 (MSP1) 作为一种病原体关联分子模式 (PAMP),在米中启动PAMP触发免疫力 (PTI).
- 虽然转化后修饰 (PTM) 对植物免疫至关重要,但它们在MSP1诱导的信号传递中的具体作用在很大程度上是未知的.
研究的目的:
- 为了研究MSP1诱导的蛋白质组,ubiquitinome和酸酶组在米中的变化.
- 阐明MSP1介导的米免疫反应中PTMs的调节机制.
主要方法:
- 对MSP1过度表达和野生型大米叶的比较蛋白质组分析.
- 识别和量化矿,无处不在的化场所和乙化场所.
- 使用MapMan分析对差异修饰的功能注释.
主要成果:
- 确定了4666个PTM位点,其中437个化,53个无化和68个乙化的MSP1诱导的显著变化.
- MSP1调节的主要参与细胞免疫反应,信号传递,转录和蛋白质代谢.
- 发现PTAC16是MSP1诱导信号的关键组成部分,并确定了调节蛋白酸化的潜在激酶.
结论:
- 这项研究为PTM介导的米蛋白调节提供了新的见解,以应对M. oryzae分泌的PAMPs.
- 这些发现有助于更好地理解米中的MSP1诱导信号通路,可能有助于提高作物免疫力和产量.
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