The Soybean Gene J Contributes to Salt Stress Tolerance by Up-Regulating Salt-Responsive Genes

文献类型： 外文期刊

第一作者： Cheng, Qun

作者： Cheng, Qun;Gan, Zhuoran;Lu, Sijia;Hou, Zhihong;Li, Haiyang;Liu, Baohui;Kong, Fanjiang;Dong, Lidong;Wang, Yanping;Xiang, Hongtao;Liu, Baohui;Kong, Fanjiang

作者机构：

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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