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CaCML13 Acts Positively in Pepper Immunity Against Ralstonia solanacearum Infection Forming Feedback Loop with CabZIP63.
Shen, Lei; Yang, Sheng; Guan, Deyi; He, Shuilin.
Afiliación
  • Shen L; National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Yang S; Key Laboratory of Applied Genetics of universities in Fujian Province, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Guan D; Agricultural College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • He S; National Education Ministry Key Laboratory of Plant Genetic Improvement and Comprehensive Utilization, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Int J Mol Sci ; 21(11)2020 Jun 11.
Article en En | MEDLINE | ID: mdl-32545368
Ca2+-signaling-which requires the presence of calcium sensors such as calmodulin (CaM) and calmodulin-like (CML) proteins-is crucial for the regulation of plant immunity against pathogen attack. However, the underlying mechanisms remain elusive, especially the roles of CMLs involved in plant immunity remains largely uninvestigated. In the present study, CaCML13, a calmodulin-like protein of pepper that was originally found to be upregulated by Ralstonia solanacearum inoculation (RSI) in RNA-seq, was functionally characterized in immunity against RSI. CaCML13 was found to target the whole epidermal cell including plasma membrane, cytoplasm and nucleus. We also confirmed that CaCML13 was upregulated by RSI in pepper roots by quantitative real-time PCR (qRT-PCR). The silencing of CaCML13 significantly enhanced pepper plants' susceptibility to RSI accompanied with downregulation of immunity-related CaPR1, CaNPR1, CaDEF1 and CabZIP63. In contrast, CaCML13 transient overexpression induced clear hypersensitivity-reaction (HR)-mimicked cell death and upregulation of the tested immunity-related genes. In addition, we also revealed that the G-box-containing CaCML13 promoter was bound by CabZIP63 and CaCML13 was positively regulated by CabZIP63 at transcriptional level. Our data collectively indicate that CaCML13 act as a positive regulator in pepper immunity against RSI forming a positive feedback loop with CabZIP63.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Capsicum / Ralstonia solanacearum / Factores de Transcripción con Cremalleras de Leucina de Carácter Básico Idioma: En Revista: Int J Mol Sci Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Capsicum / Ralstonia solanacearum / Factores de Transcripción con Cremalleras de Leucina de Carácter Básico Idioma: En Revista: Int J Mol Sci Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza