Identification, Evolutionary Analysis, and Stress-Responsive Roles of the Dirigent (DIR) Gene Family in Sorghum bicolor

Liu et al. systematically identified and characterized 53 DIR genes in Sorghum bicolor, revealing their evolutionary diversification, tissue-specific expression, and key roles in lignin biosynthesis and abiotic stress tolerance, with SbDIR39 and SbDIR53 highlighted as promising targets for crop improvement.