Salicylic acid promotes quiescent center cell division through ROS accumulation and down-regulation of PLT1,PLT2,and WOX5

作     者：Zhuqing Wang Duoyan Rong Dixing Chen Yang Xiao Renyi Liu Shuang Wu Chizuko Yamamuro Zhuqing Wang;Duoyan Rong;Dixing Chen;Yang Xiao;Renyi Liu;Shuang Wu;Chizuko Yamamuro

作者机构：College of Life SciencesFujian Agriculture and Forestry UniversityFuzhou 350002China FAFU‐UCR Joint Center for Horticultural Biology and MetabolomicsHaixia Institute of Science and TechnologyFujian Agriculture and Forestry UniversityFuzhou 350002China Hunan Engineering Research Centre of Lily Germplasm Resource in Novation and Deep ProcessingCollege of Life Sciences and ChemistryHunan University of TechnologyZhuzhou 412007China Center for Agroforestry Mega Data ScienceHaixia Institute of Science and TechnologyFujian Agriculture and Forestry UniversityFuzhou 350002China 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2021年第63卷第3期

页      面：583-596页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种] 

基　　金：supported by the National Natural Science Foundation of China Grant(31670187 and 31972388 to C.Y.) 

主　　题：PLT1 PLT2 QC cell division reactive oxygen species salicylic acid WOX5 

摘      要：Salicylic acid(SA)plays a crucial role in plant ***,its function in plant development is poorly *** quiescent center(QC),which maintains columella stem cells(CSCs)in the root apical meristem and typically exhibits low levels of cell division,is critical for root growth and ***,we show that the Arabidopsis thaliana SA overaccumulation mutant constitutively activated cell death 1(cad1),which exhibits increased cell division in the QC,is rescued by additional mutations in genes encoding the SA biosynthetic enzyme SALICYLIC ACID INDUCTION DEFFICIENT2(SID2)or the SA receptor NONEXPRESSER OF PR GENES1(NPR1),indicating that QC cell division in the cad1 mutant is promoted by the NPR1-dependent SA signaling *** application of exogenous SA also promoted QC cell division in wild-type plants in a dose-dependent manner and largely suppressed the expression of genes involved in QC maintenance,including those encoding the APETALA2(AP2)transcription factors PLETHORA1(PLT1)and PLT2,as well as the homeodomain transcription factor WUSCHEL-RELATED HOMEOBOX5(WOX5).Moreover,we showed that SA promotes reactive oxygen species(ROS)production,which is necessary for the QC cell division phenotype in the cad1 *** results provide insight into the function of SA in QC maintenance.