一个甘粉碎真菌效应器劫持了植物真空分类受体介导贩运,以逃避宿主免疫检测
Hui Ling1,2, Xueqin Fu1, Ning Huang2
1Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture; Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops; Plant Immunity Center, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China.
Plant, cell & environment
|April 1, 2025
概括
甘污垢真菌Sporisorium scitamineum使用效应器SsPE15来逃避植物的免疫力. SsPE15 劫持了主机.
科学领域:
- 植物病理学 植物病理学
- 分子植物-微生物相互作用
- 在真菌病原体的产生过程中.
背景情况:
- 斯波里索里亚斯基塔米内姆 (Sporisorium scitamineum) 导致了大量的甘损失.
- 对于S. scitamineum效应物的分子机制尚不清楚.
- 宿主免疫逃避策略对于病原体的成功至关重要.
研究的目的:
- 研究甘真空分类受体1 (ScVSR1) 在植物防御中的作用.
- 确定与ScVSR1.1.相互作用的S. scitamineum效应体.
- 阐明了S. scitamineum效应体SsPE15.15的免疫逃避机制.
主要方法:
- 协同表达网络分析以识别ScVSR1相互作用基因.
- 在Arabidopsis thaliana中过度表达基因以评估ScVSR1功能.
- 蛋白质与蛋白质相互作用测试和亚细胞局部化研究.
- 在S. scitamineum病毒性中对SsPE15的功能分析.
- 效应器融合实验用于研究免疫逃避.
主要成果:
- ScVSR1的表达与S. scitamineum效应基因有负相关性.
- 过度表达scVSR1会降低植物对真菌病原体的抵抗力.
- S. scitamineum效应体SsPE15与ScVSR1相互作用,并向前腔区.
- 对SsPE15的删除增加了S. scitamineum的毒性.
- SsPE15 C端子域调解囊泡向的向,并抑制植物免疫力.
结论:
- S. scitamineum效应体SsPE15通过劫持宿主囊泡贩运系统,采用一种免疫逃避策略.
- ScVSR1在植物防御中发挥作用,并且是SsPE15.5的目标.
- SsPE15充当免疫诱导剂,其操纵可促进病原体感染.
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