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Acta Horticulturae Sinica ›› 2024, Vol. 51 ›› Issue (10): 2281-2296.doi: 10.16420/j.issn.0513-353x.2023-0569

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Genome-Wide Identification and Stress-Responsive Expression Analysis of the Cucumber SRS Gene Family

HAN Shiwen1, LIU Tao1, WANG Liping1,2, LI Nanyang1,2, WANG Suna1,2, WANG Xing1,2,3,*()   

  1. 1 Department of Horticulture,Hebei University of Engineering,Handan,Hebei 056038,China
    2 Hebei Engineering Research Center for Breeding of Solanaceous Vegetable Seedlings,Handan,Hebei 056038,China
    3 Handan Vegetable Improvement and Breeding Technology Innovation Center,Handan,Hebei 056038,China
  • Received:2023-10-31 Revised:2024-07-22 Online:2024-10-25 Published:2024-10-21
  • Contact: WANG Xing

Abstract:

The SHORT INTERNODESSHI-related sequenceSRS)gene family is a crucial group of transcription factors involved in plant growth and development. A genome-wide screening and functional analysis of the SRS gene family in cucumber were conducted. A total of nine members of CsSRS gene family were identified,which unevenly distributed across seven chromosomes in the cucumber genome. Based on phylogenetic relationships,the CsSRS genes were classified into three subfamilies. Gene structure and motif composition analysis revealed that members of the same subfamily contained similar intron/exon patterns and motifs. Sequence analysis indicated that the N-terminal of CsSRS possessed a highly conserved RING domain,while the IGGH domain of C-terminal exhibited signs of loss during evolution. Further analysis of the promoter regions of CsSRS genes uncovered various cis-acting elements related to growth,development,and stress responses. Tissue expression pattern analysis demonstrated significant tissue-specific expression of CsSRS genes. Additionally,transcriptomic expression analysis revealed that CsSRS genes exhibited diverse responses to various biotic and abiotic stresses,indicating functional divergence. Among them,the cucumber CsSRS6 showed high expression in most tissues and displayed differential expression under stress conditions.

Key words: cucumber, SRS gene family, systematic evolution, gene expression, stress responses