Genome-wide identification and expression analysis of the SRS gene family in Brassica napus
The plant-specific transcription factor family,shi-related sequence(SRS),plays crucial roles in plant growth,development,hormone signaling,and stress response.To explore the potential functions of the SRS gene family in Brassica napus and its evolutionary history,a comparative genomics approach identified 38,16,and 20 SRS genes in B.napus,B.rapa,and B.oleracea,respectively.Analysis of physicochemical properties,phyloge-netic relationships,gene structure,collinearity,cis-regulatory elements,and expression patterns revealed that all SRS proteins were grouped into nine subgroups,with intron/exon loss events occurring during B.napus SRS gene family evolution.Ka/Ks analysis showed purifying selection following gene duplication events.Most SRS gene pro-moters contained cis-regulatory elements related to light response,anaerobic induction,and abscisic acid response,with B.napus SRS gene promoters having more endosperm expression and light response elements than their diploid progenitors.Transcriptome analysis demonstrated diverse expression patterns for B.napus SRS genes under various treatments,with preferential expression in roots.This study offers a foundation for understanding the functions and roles of the B.napus SRS gene family,serving as a reference for gene evolution between B.napus and its diploid pro-genitors.
SRSgene familyevolutiontranscriptomeBrassica napus L
万方数据
维普
