SmJAZ3/4 positively and SmJAZ8 negatively regulates salt tolerance in transgenic Arabidopsis thaliana
文献类型： 外文期刊
作者： Wang, Mei 1 ; Wang, Tong 1 ; Kou, Jingyang 1 ; Wu, Jiafeng 1 ; Shao, Gaige 2 ; Wei, Jia 3 ; Liu, Jingying 1 ; Ma, Pengda 1 ;
作者机构： 1.Northwest A&F Univ, Coll Life Sci, Yangling 712100, Peoples R China
2.Xian Agr Technol Extens Ctr, Xian, Peoples R China
3.Jilin Acad Agr Sci, Northeast Agr Res Ctr China, Jilin Prov Key Lab Agr Biotechnol, Changchun 130033, Peoples R China
关键词： Salvia miltiorrhiza Bunge; SmJAZ3/4/8; Methyl jasmonate; Salt stress
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.7； 五年影响因子：6.4 ）
ISSN： 0981-9428
年卷期： 2024 年 216 卷
页码：
收录情况： SCI
摘要： Salvia miltiorrhiza Bunge, a model plant for medicinal research, is extensively utilized for its dried roots and rhizomes for treatment of various diseases. Soil salinization hinders the large-scale cultivation and industrial production of S. miltiorrhiza by affecting its active compounds. Methyl jasmonate (MeJA) is a crucial plant hormone that regulates plant responses under salt stress. Jasmonate zim domain (JAZ) proteins function as transcriptional repressors in jasmonic acid (JA) signaling pathways. This study explores the interaction between JA and salt stress by using transgenic Arabidopsis thaliana to elucidate the roles of SmJAZ3, , SmJAZ4, , and SmJAZ8. . We found that 2.5 mu M MeJA reduced the inhibitory effect of 150 mM NaCl on wild-type seed germination, and this effect was reversed by 15 mu M dihydroxyindole-2-carboxylic acid (DIECA). Similar results were observed in transgenic A. thaliana lines overexpressing SmJAZ3/4/8. . Inclusion of SmJAZ3/4 enhanced salt resistance by increasing antioxidant enzyme activity, chlorophyll content, proline content, and Na+/K+ + /K + content, while SmJAZ8 had the opposite effect. These findings suggest that appropriate concentrations of MeJA can alleviate the negative effect of salt stress on plant growth and development. Investigating the salt tolerance of SmJAZ3/4/8 is significant for cultivating high-quality salt-tolerant S. miltiorrhiza. .
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