Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (4): 586-594.DOI: 10.3969/j.issn.1004-1524.2021.04.03

• Crop Science • Previous Articles     Next Articles

Identification of soybean LAZ1 gene family and functional analysis of GmLAZ1-9

YANG Xinxiaa(), ZHANG Binb,*()   

  1. a. Department of Logistics
    b. College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China
  • Received:2020-10-11 Online:2021-04-25 Published:2021-04-25
  • Contact: ZHANG Bin

Abstract:

In the present study, the BLAST search was performed in the soybean genome database and LAZ1 gene family members were obtained. Bioinformatics analysis and expression pattern detection were performed, and transgenic Arabidopsis was used to verify gene function. It was shown that a total of 17 soybean LAZ1 genes were identified, namely GmLAZ1-1 to GmLAZ1-17. All of the GmLAZ1 genes were unevenly distributed on 12 chromosomes. The LAZ1 family members in soybean were phylogenetically divided into three evolutionary clades, and the members in the same clades shared similar gene and protein structures. The analysis of cis-regulatory elements indicated that multiple abiotic stress-related cis-acting elements presented in the promoters of soybean LAZ1 genes, such as ABRE, ARE, LTR, G-box, etc. Semi-quantitative PCR results showed that the expression of GmLAZ1-5, GmLAZ1-9, GmLAZ1-11, and GmLAZ1-13 was up-regulated after salt treatment. Moreover, GmLAZ1-9 enhanced salinity tolerance in transgenic Arabidopsis, which provided basis for further exploration of the functions and molecular mechanisms of other LAZ1 genes.

Key words: soybean, LAZ1 family, salt stress, gene expression

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