Analysis of the UDP-Glucosyltransferase ( UGT ) Gene Family and Its Functional Involvement in Drought and Salt Stress Tolerance in Phoebe bournei

Uridine diphosphate glycosyltransferases (UDP-GTs, UGTs), which are regulated by genes, play a crucial role in glycosylation. In vivo, the activity of genes can affect the availability of metabolites and the rate at which they can be eliminated from the body. genes can exert their regulatory effects through mechanisms such as post-transcriptional modification, substrate subtype specificity, and drug interactions. is an economically significant tree species that is endemic to southern China. Despite extensive studies on the gene family in various species, a comprehensive investigation of the family in . has not been reported. Therefore, we conducted a systematic analysis to identify 156 genes within the entire . genome, all of which contained the PSPG box. The family consists of 14 subfamilies, consistent with . We observed varying expression levels of genes across different tissues in . , with the following average expression hierarchy: leaf > stem xylem > stem bark > root xylem > root bark. Covariance analysis revealed stronger covariance between . and closely related species. In addition, we stressed the seedlings with 10% NaCl and 10% PEG-6000. The genes exhibited differential expression under drought and salt stresses, with specific expression patterns observed under each stress condition. Our findings shed light on the transcriptional response of factors to drought and salt stresses, thereby establishing a foundation for future investigations into the role of transcription factors.