SlTPP4 participates in ABA-mediated salt tolerance by enhancing root architecture in tomato

作     者：DU Dan HU Xin SONG Xiao-mei XIA Xiao-jiao SUN Zhen-yu LANG Min PAN Yang-lu ZHENG Yu PAN Yu DU Dan;HU Xin;SONG Xiao-mei;XIA Xiao-jiao;SUN Zhen-yu;LANG Min;PAN Yang-lu;ZHENG Yu;PAN Yu

作者机构：Key Laboratory of Horticulture Science for Southern Mountainous RegionsMinistry of Education/College of Horticulture and Landscape Architecture/Academy of Agricultural SciencesSouthwest UniversityChongqing 400715P.R.China Chongqing Vocational Institute of EngineeringChongqing 402260P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2023年第22卷第8期

页      面：2384-2396页

核心收录：

学科分类：09[农学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

基　　金：supported by the National Natural Science Foundation of China(32172597) the Chongqing Post Doctoral Special Support Project,China(2112012724652268) the Chongqing Exceptional Young Talents Project,China(CQYC202005097) the Chongqing Natural Science Foundation,China(cstc2018jcyjAX0730) 

主　　题：trehalose-6-phosphate phosphatase(TPP) salt tolerance root ABA tomato(Solanum lycopersicum) 

摘      要：Salinity tolerance is an important physiological index for crop *** are typically the first plant tissue to withstand salt *** this study,we found that the tomato(Solanum lycopersicum)trehalose-6-phosphate phosphatase(SlTPP4)gene is induced by abscisic acid(ABA)and salt,and is mainly expressed in *** of SlTPP4 in tomato enhanced tolerance to salt stress,resulting in better growth *** saline conditions,SlTPP4 overexpression plants demonstrated enhanced sucrose metabolism,as well as increased expression of genes related to salt *** the same time,expression of genes related to ABA biosynthesis and signal transduction was enhanced or altered,***-depth exploration demonstrated that SlTPP4 enhances Casparian band development in roots to restrict the intake of Na^(+).Our study thus clarifies the mechanism of SlTPP4-mediated salt tolerance,which will be of great importance for the breeding of salt-tolerant tomato crops.