Biotechnology Bulletin ›› 2025, Vol. 41 ›› Issue (5): 129-140.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0980

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Sequence Analysis and Induced Expression Analysis of GmGST Gene Cluster Genes in Soybean

ZHAO Jing1(), GUO Qian1, LI Rui-qi1, LEI Ying-yang1, YUE Ai-qin1, ZHAO Jin-zhong2, YIN Cong-cong2, DU Wei-jun1(), NIU Jing-ping3()   

  1. 1.College of Agriculture, Shanxi Agricultural University, Taigu 030801
    2.Basic Department of Shanxi Agricultural University, Taigu 030801
    3.College of Life Sciences, Shanxi Agricultural University, Taigu 030801
  • Received:2024-10-08 Online:2025-05-26 Published:2025-06-05
  • Contact: DU Wei-jun, NIU Jing-ping E-mail:z15517796474@163.com;duweijun68@126.com;niujingping@sxau.edu.cn

Abstract:

Objective To investigate the gene structure and expression characteristics of GmGST, laying the foundation for studying its function in soybean resistance to soybean mosaic virus. Method The gene GmGSTU12 (Glyma.07G139700), GmGSTU13 (Glyma.07G139800), GmGSTU16 (Glyma.07G140100), and GmGSTU47 (Glyma.07G140200) were cloned from the resistant material X149 using RT-PCR. The method of bioinformatics was used to analyze GmGST bioinformatics. RT-qPCR was used to analyze the expressions of GmGST genes induced by SC15, hormones (MeJA, ABA, ETH and SA), H2O2 and tissue-specific expression in the resistant material X149, and a UV spectrophotometer was used to detect the activities of glutathione S- transferase (GSTs). Result The results of gene amplification showed that the lengths of the open reading frames of GmGSTU12, GmGSTU13, GmGSTU16 and GmGSTU47 were 678, 678, 952, and 669 bp, respectively. Bioinformatics analysis showed that the four genes belonged to the Tau family of GSTs, which were cytoplasmic, cytoplasmic, chloroplast and nuclear proteins without signal peptides, among which GmGSTU12, GmGSTU13 and GmGSTU47 were stable hydrophilic proteins, and GmGSTU16 were hydrophobic proteins, all of which were non-transmembrane structural proteins. RT-qPCR analysis showed that the expression of GmGSTU13 was the highest in the leaves, and the expressions of GmGSTU12,GmGSTU16 and GmGSTU47 in the roots were the highest. All four genes were up-regulated by SC15 and H2O2. In addition, GmGSTU12 and GmGSTU13 were mainly expressed in response to MeJA induction. GmGSTU16 was mainly expressed in response to the induction of both MeJA and SA. GmGSTU47 was mainly expressed in response to the induction of both MeJA and ABA. The dectection of GSTs activity showed that GSTs activity increased significantly at 12 h after SC15 induction and reached its maximum at 48 h. Conclusion All four GmGST genes belong to the Tau class of the GST family and can be induced by SC15, exogenous hormones (MeJA, ABA, ETH, SA), and H2O2.

Key words: soybean, soybean mosaic virus, GmGST, gene amplification, bioinformatics analysis, expression analysis