CsWRKY11 cooperates with CsNPR1 to regulate SA-triggered leaf de-greening and reactive oxygen species burst in cucumber
文献类型： 外文期刊
作者： Zhang, Dingyu 1 ; Zhu, Ziwei 2 ; Yang, Bing 1 ; Li, Xiaofeng 1 ; Zhang, Hongmei 1 ; Zhu, Hongfang 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Shanghai Key Lab Protected Hort Technol, Hort Res Inst, 1000 Jinqi Rd, Shanghai 201403, Peoples R China
2.Fudan Univ, State Key Lab Genet Engn, Shanghai 200438, Peoples R China
3.Fudan Univ, Fudan Ctr Genet Divers & Designing Agr, Sch Life Sci, Shanghai 200438, Peoples R China
关键词： Salicylic acid; CsNPR1; CsWRKY11; Chlorophyll degradation; ROS burst
期刊名称：MOLECULAR HORTICULTURE （ 影响因子：8.1； 五年影响因子：11.0 ）
ISSN： 2730-9401
年卷期： 2024 年 4 卷 1 期
页码：
收录情况： SCI
摘要： Salicylic acid (SA) is a multi-functional phytohormone, regulating diverse processes of plant growth and development, especially triggering plant immune responses and initiating leaf senescence. However, the early SA signaling events remain elusive in most plant species apart from Arabidopsis, and even less is known about the multi-facet mechanism underlying SA-regulated processes. Here, we report the identification of a novel regulatory module in cucumber, CsNPR1-CsWRKY11, which mediates the regulation of SA-promoted leaf senescence and ROS burst. Our analyses demonstrate that under SA treatment, CsNPR1 recruits CsWRKY11 to bind to the promoter of CsWRKY11 to activate its expression, thus amplifying the primary SA signal. Then, CsWRKY11 cooperates with CsNPR1 to directly regulate the expression of both chlorophyll degradation and ROS biosynthesis related genes, thereby inducing leaf de-greening and ROS burst. Our study provides a solid line of evidence that CsNPR1 and CsWRKY11 constitute a key module in SA signaling pathway in cucumber, and gains an insight into the interconnected regulation of SA-triggered processes.
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