Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (2): 207-220.DOI: 10.3969/j.issn.1004-1524.2022.02.01

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Identification of soybean PP2C family genes and transcriptome analysis in response to salt stress

YANG Xinxiaa(), TANG Manshengb, ZHANG Binb,*()   

  1. a. Department of Logistics, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, China
    b. College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, Hunan, China
  • Received:2021-05-21 Online:2022-02-25 Published:2022-03-02
  • Contact: ZHANG Bin

Abstract:

Protein phosphatases (PP2Cs) plays important roles in response to environmental stress by affecting a variety of biological processes in plants. In order to explore the function of members of PP2C family of cultivated soybeans in salt stress, PP2C family of cultivated soybeans was systematically explored through bioinformatics and transcriptom analysis. A total of 126 PP2C members were identified in this study and were divided into 11 subfamilies, and PP2Cs in the same subfamily have similar gene and protein structures. Transcriptome sequencing results showed that 9 GmPP2Cs were differentially expressed genes (DEGs) under salt stress, of which GmPP2C41, GmPP2C48, GmPP2C72, GmPP2C84, GmPP2C89, GmPP2C107 and GmPP2C113 were up-regulated after salt treatment, while GmPP2C27 and GmPP2C114 were down-regulated. qRT-PCR results showed that GmPP2C89 and GmPP2C113 had the highest expression level at 6 h after salt treatment. GO enrichment analysis found that the nine DEGs mainly had ion binding and phosphatase activity. The Y2H results showed that GmPP2C113 and GmPP2C47 could interact. Therefore, the above results would provide a theoretical basis for further research on the functions and molecular mechanisms of soybean PP2C family members in response to salt stress and provide important candidate genes for the genetic improvement of soybean salt tolerance.

Key words: soybean (Glycine max), type 2C protein phosphatase, salt stress, transcriptome analysis, differentially expressed genes

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