The SHORT INTERNODES(SHI)-related sequence(SRS)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.
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