Genome-Wide and Comprehensive Analysis of the Multiple Stress-Related CAF1 (CCR4-Associated Factor 1) Family and Its Expression in Poplar.

Poplar is one of the most widely used tree in afforestation projects. However, it is susceptible to abiotic and biotic stress. CCR4-associated factor 1 () is a major member of CCR4-NOT, and it is mainly involved in transcriptional regulation and mRNA degradation in eukaryotes. However, there are no studies on the molecular phylogeny and expression of the gene in poplar. In this study, a total of 19 genes were identified in the genome. Phylogenetic analysis of the gene family was performed with two closely related species ( and ) to investigate the evolution of the gene. The tissue expression of the gene showed that 19 genes were present in different tissues of poplar. Additionally, the analysis of the expression of the gene showed that the family was up-regulated to various degrees under biotic and abiotic stresses and participated in the poplar stress response. The results of our study provide a deeper understanding of the structure and function of the gene and may contribute to our understanding of the molecular basis of stress tolerance in poplar.