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多任务方法定位树生物三型分泌系统在真核细胞内部的效应蛋白

Irene Jiménez-Guerrero¹, Francisco Javier López-Baena¹, Carlos Medina¹

¹Departamento de Microbiología, Universidad de Sevilla, Avenida de Reina Mercedes, 6, 41012 Sevilla, Spain.

Plants (Basel, Switzerland)

|June 10, 2023

概括

研究人员开发了一种新方法来追踪宿主细胞内的称为III型分泌因子 (T3E) 的细菌蛋白. 这种技术成功地在植物和动物细胞中定位了特定的T3E,NopL,有助于研究根茎植物和豆类相互作用.

科学领域:

微生物学微生物学
植物科学植物科学
细胞生物学细胞生物学

背景情况:

树菌与豆类形成共生关系,将大气中的固定在根结节中.
细菌III型分泌的效应因子 (T3E) 对于在共生过程中调节宿主反应至关重要.
在宿主细胞内定位T3E是具有挑战性的,因为其度低,分泌时间不明.

研究的目的:

开发和验证一种多任务方法,用于在体内定位根茎菌T3E.
在异质宿主模型中研究NopL效应物的亚细胞局部.
为了证明该方法在不同类型的真核细胞中具有广泛的适用性.

主要方法:

使用多任务方法来跟踪NopL效应器.
在烟草植物叶细胞 (异质宿主) 中检查了局部化.
在感染过和感染沙门氏菌的动物细胞中研究局部化 (新应用).

主要成果:

成功地将NopL效应器定位在烟草叶细胞中.
在动物细胞中首次实现了根茎菌T3E的体内定位.
在各种主机系统中展示了一致的结果.

结论:

开发的多任务方法对于研究各种真核细胞中的T3E定位是有效的.
这种方法为了解植物-微生物和病原体-宿主相互作用中的效应因子功能提供了有价值的工具.
这些发现有助于研究共生和致病过程的特异性和效率.

关键词:

细菌效应剂是一种细菌效应剂.不同类的表达系统.第三种类型的分泌系统.第三种类型的分泌效应器.

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