The Soybean Gene J Contributes to Salt Stress Tolerance by Up-Regulating Salt-Responsive Genes
文献类型： 外文期刊
作者： Cheng, Qun 1 ; Gan, Zhuoran 1 ; Wang, Yanping 2 ; Lu, Sijia 1 ; Hou, Zhihong 1 ; Li, Haiyang 1 ; Xiang, Hongtao 3 ; Liu, 1 ;
作者机构： 1.Guangzhou Univ, Innovat Ctr Mol Genet & Evolut, Sch Life Sci, Guangzhou, Peoples R China
2.Heilongjiang Acad Agr Sci, Mudanjiang, Peoples R China
3.Heilongjiang Acad Agr Sci, Inst Farming & Cultivat, Harbin, Peoples R China
4.Chinese Acad Sci, Innovat Acad Seed Design, Northeast Inst Geog & Agroecol, Key Lab Soybean Mol Design Breeding, Harbin, Peoples R China
关键词： Soybean; J; transcription factor; hairy roots; salt tolerance; RNA-seq
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2020 年 11 卷
页码：
收录情况： SCI
摘要： Soybean [Glycine max (L.) Merr.] is an important crop for oil and protein resources worldwide, and its farming is impacted by increasing soil salinity levels. In Arabidopsis the gene EARLY FLOWERING 3 (ELF3), increased salt tolerance by suppressing salt stress response pathways. J is the ortholog of AtELF3 in soybean, and loss-of-function J-alleles greatly prolong soybean maturity and enhance grain yield. The exact role of J in abiotic stress response in soybean, however, remains unclear. In this study, we showed that J expression was induced by NaCl treatment and that the J protein was located in the nucleus. Compared to NIL-J, tolerance to NaCl was significantly lower in the NIL-j mutant. We also demonstrated that overexpression of J increased NaCl tolerance in transgenic soybean hairy roots. J positively regulated expression of downstream salt stress response genes, including GmWRKY12, GmWRKY27, GmWRKY54, GmNAC, and GmSIN1. Our study disclosed a mechanism in soybean for regulation of the salt stress response. Manipulation of these genes should facilitate improvements in salt tolerance in soybean.
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