Genome-Wide Identification and Expression Profiling of the Transcription Factor Family in Response to Abiotic Stress in Centipedegrass.

SQUAMOSA promoter-binding protein-like (SPL) transcription factors play a critical role in the regulation of gene expression and are indispensable in orchestrating plant growth and development while also improving resistance to environmental stressors. Although it has been identified across a wide array of plant species, there have been no comprehensive studies on the gene family in centipedegrass [ (Munro) Hack.], which is an important warm-season perennial C4 turfgrass. In this study, 19 potential genes in centipedegrass were identified and assigned the names -. Gene structure and motif analysis demonstrated that there was relative consistency among the branches of the phylogenetic tree. Five pairs of segmental duplication events were detected within centipedegrass. Ten genes were predicted to be targeted by miR156. Additionally, the genes were found to be predominantly expressed in leaves and demonstrated diverse responses to abiotic stress (salt, drought, glufosinate ammonium, aluminum, and cold). This study offers a comprehensive insight into the gene family in centipedegrass, creating a foundation for elucidating the functions of genes and investigating their involvement in abiotic stress responses.