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一种具有动物病原体类型III分泌的海洋细菌在陆地植物中引起非宿主过敏反应

Boyoung Lee¹, Jeong-Im Lee², Soon-Kyeong Kwon³

¹Department of Systems Biology, Division of Life Sciences, and Institute for Life Science and Biotechnology, Yonsei University, Seoul 03722, Korea.

The plant pathology journal

|December 11, 2023

概括

海洋细菌效应剂可以触发植物免疫反应,导致它们从未遇到过的植物中的细胞死亡. 这表明植物可能会抵御意外的微生物威胁.

科学领域:

植物病理学植物病理学
微生物学微生物学
分子生物学分子生物学

背景情况:

植物免疫反应,如过敏反应 (HR),对于对病原体的防御至关重要.
通过III型分泌系统 (T3SS) 输送的微生物效应剂经常调节植物免疫力.

研究的目的:

为了研究海洋细菌Hahella chejuensis与陆地植物Nicotiana benthamiana之间的相互作用.
为了确定细菌III型分泌的效应剂是否能引起植物免疫反应.

主要方法:

使用了海洋细菌Hahella chejuensis和模型植物Nicotiana benthamiana.
分析了细胞死亡诱导和基因表达模式.
研究了SGT1和AvrPto1在观察到的植物反应中的作用.

主要成果:

哈赫拉奇尤南斯 (Hahella chejuensis) 的T3SSs诱导了Nicotiana benthamiana中类似HR的细胞死亡.
植物的反应由SGT1调解,并被AvrPto1.1抑制.
这表明了一个非主机HR的特殊案例.

结论:

来自海洋细菌的III型分泌效应物可以在天真的陆地植物中诱导非宿主HR.
植物可能拥有进化的机制来识别和响应来自进化遥远的微生物的效应因子.
这一发现扩大了对植物非宿主耐药性和潜在的跨王国信号传递的理解.

关键词:

过敏反应是一种过敏反应.非宿主的抵抗力.结合核酸的白蛋白丰富的重复蛋白质第三种类型的分泌系统.

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