豆类结节和固需要DnaJ样蛋白和脂质转移蛋白的相互作用
Dasong Chen1, Dongzhi Li1, Ziqi Li1
1National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
Plant physiology
|August 23, 2023
概括
一种新的类似DnaJ的蛋白质,AsDJL1,促进脂质运输到共生体膜,这对于中国牛奶的根茎菌感染和结节发育至关重要. 它与AsE246的相互作用对共生至关重要.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物与微生物的相互作用
- 豆类的共生关系是豆类的共生关系.
背景情况:
- 脂质运输蛋白 (LTP) 对于植物发育至关重要.
- 豆类中的结节器官生成需要脂质运输到交生体膜 (SMs).
- 结节特异性LTPs的具体机制尚未得到充分理解.
研究的目的:
- 为了识别和描述参与脂质运输的新型蛋白质,用于结节器官生成.
- 为了阐明AsDJL1在中国牛奶 (Astragalus sinicus) 中的共生相互作用中的作用.
主要方法:
- 对AsDJL1.1.的基因鉴定和表征
- 同焦点免疫光和免疫电子显微镜用于蛋白质定位.
- 在Nicotiana benthamiana中进行协同转化测试.
- 同免疫沉以确认蛋白质相互作用.
- 在中国牛奶兽医中进行的RNA干扰 (RNAi) 和过度表达研究.
- 脂质含量和结节生理参数的分析.
主要成果:
- 一种类似DnaJ的蛋白质AsDJL1与LTP AsE246.6相互作用.
- AsDJL1局部化到感染线程和共生体膜,与根茎菌共局部化.
- AsDJL1对于根茎菌感染,结节形成和酶活性至关重要.
- AsDJL1影响了根和结节中的脂质丰富度,特别是二甲基糖醇.
- 过度表达AsDJL1可增强结节生物质和酶活性.
结论:
- AsDJL1通过促进脂质运输到SMs,在共生固定中发挥关键作用.
- AsDJL1的C端指域对于其与AsE246.6的相互作用至关重要.
- AsDJL1是豆类中根茎菌感染和结节器官生成的关键调节者.
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