Lysine inhibition of expression of genes encoding type III secretion system in Ralstonia pseudosolanacearum and its virulence in host plants
文献类型： 外文期刊
作者： Han, Liangliang 1 ; Li, Runxiao 1 ; Huang, Jiajun 1 ; Xiao, Xia 2 ; Ouyang, Ping 2 ; Liang, Tao 3 ; Guo, Tao 1 ; Hikichi, Yasufumi 4 ; Ohnishi, Kouhei 4 ; Zhang, Yong 1 ;
作者机构： 1.Southwest Univ, Coll Resources & Environm, Chongqing, Peoples R China
2.Chongqing Technol & Business Univ, Engn Res Ctr Waste Oil Recovery Technol & Equipmen, Minist Educ, Chongqing 400067, Peoples R China
3.Chongqing Acad Agr Sci, Chongqing, Peoples R China
4.Kochi Univ, Fac Agr & Marine Sci, Nankoku, Japan
关键词：
期刊名称：JOURNAL OF GENERAL PLANT PATHOLOGY （ 影响因子：1.2； 五年影响因子：1.2 ）
ISSN： 1345-2630
年卷期： 2025 年 91 卷 5 期
页码：
收录情况： SCI
摘要： The type III secretion system (T3SS) is essential for Ralstonia pseudosolanacearum to infect host plants. Transcription of the T3SS genes was not activated in nutrient-rich casamino acid-peptone-glucose (CPG) broth, but activated in a minimal medium that might mimic metabolic signals of the host plant. CPG broth at 5% substantially impaired expression of T3SS genes. In tests of T3SS gene expression, l-lysine was found to be a novel inhibitor of expression of T3SS genes in non-acidic conditions and significantly impaired their expression via a PrhG-HrpB pathway and their motility and biofilm formation, which are also important for pathogenicity, and led to significant inhibition of symptom development in tomato plants.
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