Rastonia solanacearum type III effectors target host 14-3-3 proteins to suppress plant immunity
文献类型: 外文期刊
第一作者: Zhang, Shuangxi
作者: Zhang, Shuangxi;Cao, Peng;Zhang, Qi;Qiang, Yi;An, Yuyan;Zhang, Meixiang;Xiao, Zhiliang;Meng, He;Yang, Aiguo
作者机构:
关键词: Ralstonia solanacearum; Effectors; Cell death; 14-3-3 protein
期刊名称:BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS ( 影响因子:3.1; 五年影响因子:3.2 )
ISSN: 0006-291X
年卷期: 2024 年 690 卷
页码:
收录情况: SCI
摘要: 14-3-3 proteins play important roles in plant metabolism and stress response. Tomato 14-3-3 proteins, SlTFT4 and SlTFT7, serve as hubs of plant immunity and are targeted by some pathogen effectors. Ralstonia solanacearum with more than 70 type III effectors (T3Es) is one of the most destructive plant pathogens. However, little is known on whether R. solanacearum T3Es target SlTFT4 and SlTFT7 and hence interfere with plant immunity. We first detected the associations of SlTFT4/SlTFT7 with R. solanacearum T3Es by luciferase complementation assay, and then confirmed the interactions by yeast two-hybrid approach. We demonstrated that 22 Ralstonia T3Es were associated with both SlTFT4 and SlTFT7, and five among them suppressed the hypersensitive response induced by MAPKKK alpha, a protein kinase which associated with SlTFT4/SlTFT7. We further demonstrated that suppression of MAPKKK alpha-induced HR and plant basal defense by the T3E RipAC depend on its association with 14-3-3 proteins. Our findings firstly demonstrate that R. solanacearum T3Es can manipulate plant immunity by target-ing 14-3-3 proteins, SlTFT4 and SlTFT7, providing new insights into plant-R. solanacearum interactions.
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