biostudies-literatureWang CModern Agro-industry Technology Research SystemForage Breeding Project of Sichuan ProvinceSichuan Province’s Science Fund for International CooperationNational Natural Science Foundation of ChinaSichuan Province’s Science Fund for Distinguished Young Scholars925https://www.ebi.ac.uk/biostudies/studies/S-EPMC10138293biostudies-literatureUnknown14(4)Plant-specific TCP transcription factors regulate several plant growth and development processes. Nevertheless, little information is available about the TCP family in orchardgrass (<i>Dactylis glomerata</i> L.). This study identified 22 <i>DgTCP</i> transcription factors in orchardgrass and determined their structure, phylogeny, and expression in different tissues and developmental stages. The phylogenetic tree classified the <i>DgTCP</i> gene family into two main subfamilies, including class I and II supported by the exon-intron structure and conserved motifs. The <i>DgTCP</i> promoter regions contained various cis-elements associated with hormones, growth and development, and stress responses, including MBS (drought inducibility), circadian (circadian rhythms), and TCA-element (salicyliGenesGenome-Wide Identification, Characterization, and Expression of <i>TCP</i> Genes Family in Orchardgrass.PMC101382932021YFYZ00132022YFH00582021JDJQ001no. CARS-34NSFC 32101422Li DWang CZhang XFeng GHuang LXu XNie GfalseGenome-Wide Identification, Characterization, and Expression of <i>TCP</i> Genes Family in Orchardgrass.Plant-specific TCP transcription factors regulate several plant growth and development processes. Nevertheless, little information is available about the TCP family in orchardgrass (<i>Dactylis glomerata</i> L.). This study identified 22 <i>DgTCP</i> transcription factors in orchardgrass and determined their structure, phylogeny, and expression in different tissues and developmental stages. The phylogenetic tree classified the <i>DgTCP</i> gene family into two main subfamilies, including class I and II supported by the exon-intron structure and conserved motifs. The <i>DgTCP</i> promoter regions contained various cis-elements associated with hormones, growth and development, and stress responses, including MBS (drought inducibility), circadian (circadian rhythms), and TCA-element (salicyli2023-01-01T00:00:00Z2023 Apr2026-04-08T13:33:43.853Z2025-02-19T04:46:14.394ZS-EPMC101382933710768210.3390/genes14040925