The SlWRKY57-SlVQ21/SlVQ16 module regulates salt stress in tomato  

作　　者：Jilin Ma Chonghua Li Lulu Sun Xuechun Ma Hui Qiao Wenchao Zhao Rui Yang Susheng Song Shaohui Wang Huang Huang 

机构地区：[1]Plant Science and Technology College,Beijing University of Agriculture,Beijing 102206,China [2]Beijing Key Laboratory for Agricultural Application and New Technique,Beijing University of Agriculture,Beijing 102206,China [3]College of Life Sciences,Capital Normal University,Beijing 100048,China

出　　处：《Journal of Integrative Plant Biology》2023年第11期2437-2455,共19页植物学报（英文版）

基　　金：supported by the Project of Cultivation for young top-notch Talents of Beijing Municipal Institutions (Grant No.BPHR202203099)。

摘　　要：Salt stress is a major abiotic stress which severely hinders crop production.However,the regulatory network controlling tomato resistance to salt remains unclear.Here,we found that the tomato WRKY transcription factor WRKY57 acted as a negative regulator in salt stress response by directly attenuating the transcription of salt-responsive genes(Sl RD29B and Sl DREB2)and an ion homeostasis gene(Sl SOS1).We further identified two VQ-motif containing proteins Sl VQ16 and Sl VQ21as Sl WRKY57-interacting proteins.Sl VQ16 positively,while Sl VQ21 negatively modulated tomato resistance to salt stress.Sl VQ16 and Sl VQ21 competitively interacted with Sl WRKY57 and antagonistically regulated the transcriptional repression activity of Sl WRKY57.Additionally,the Sl WRKY57-Sl VQ21/Sl VQ16 module was involved in the pathway of phytohormone jasmonates(JAs)by interacting with JA repressors JA-ZIM domain(JAZ)proteins.These results provide new insights into how the Sl WRKY57-Sl VQ21/Sl VQ16 module finely tunes tomato salt tolerance.

关 键 词：JASMONATES salt stress TOMATO VQ protein WRKY transcription factor 

分 类 号：S641.2[农业科学—蔬菜学]