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A Glycine soja S1 group bZIP transcription factor GsbZIP43 is a positive regulator of sodium bicarbonate stress tolerance

文献类型： 外文期刊

作者： Jia, Bowei 1 ; Ren, Hao 2 ; Wu, Shengyang 2 ; Wu, Tong 1 ; Li, Yuan 1 ; Cui, Hongli 1 ; Chen, Chao 3 ; Chen, Xi 1 ; Bi, Yingdong 4 ; Sun, Xiaoli 1 ; Sun, Mingzhe 1 ;

作者机构： 1.Heilongjiang Bayi Agr Univ, Coll Agr, Crop Stress Mol Biol Lab, Daqing 163319, Peoples R China

2.Northeast Agr Univ, Key Lab Germplasm Enhancement Physiol & Ecol Food, Minist Educ, Harbin 150030, Peoples R China

3.Harbin Normal Univ, Harbin 150500, Peoples R China

4.Heilongjiang Acad Agr Sci, Inst Crop Cultivat & Tillage, Harbin 150028, Peoples R China

关键词： GsbZIP43; Wild soybean; Sodium bicarbonate stress; Transcription factor

期刊名称：ENVIRONMENTAL AND EXPERIMENTAL BOTANY （ 影响因子：5.7； 五年影响因子：6.0 ）

ISSN： 0098-8472

年卷期： 2024 年 217 卷

页码：

收录情况： SCI

摘要： Soil salinization-alkalization has long restricted the yield and quality of crops. As a key factor in the regulation of gene expression, transcription factor (TF) controls the growth and development of crops. The basic leucine zipper (bZIP) family is one of the largest TF families in plants and has been widely reported regulating plant growth and development and stress responses. Here, in this study, we identified a sodium bicarbonate tolerance gene, GsbZIP43, by screening the cDNA library generated from the wild soybean G07256 with sodium bicarbonate tolerance. Sequence analysis revealed that GsbZIP43 is a member of S1 bZIP subfamily. The subcellular localization of GsbZIP43-RFP (red fluorescent protein) fusion protein in tobacco leaf cells suggested that GsbZIP43 localizes in cell nucleus. Further transactivation assay uncovered that GsbZIP43 acts as a transcriptional activator and the C-terminal region is vital for transcriptional activation. Overexpression of GsbZIP43 in BY-2 cells, Arabidopsis, and soybean hairy roots enhanced tolerance to sodium bicarbonate stress. Consistently, the loss of its close Arabidopsis homologous gene AtbZIP44 decreased tolerance to sodium bicarbonate stress. Taken together, the above results illustrate the positive role of GsbZIP43 in responding to sodium bicarbonate stress.

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