Genome-wide analysis of WRKY transcription factor genes in Toona sinensis : An insight into evolutionary characteristics and terpene synthesis.

transcription factors (TFs), one of the largest TF families, serve critical roles in the regulation of secondary metabolite production. However, little is known about the expression pattern of genes during the germination and maturation processes of buds. In the present study, the new assembly of the genome was used for the identification of 78 genes, including gene structures, phylogenetic features, chromosomal locations, conserved protein domains, cis-regulatory elements, synteny, and expression profiles. Gene duplication analysis revealed that gene tandem and segmental duplication events drove the expansion of the family, with the latter playing a key role in the creation of new genes. The synteny and evolutionary constraint analyses of the proteins among and several distinct species provided more detailed evidence of gene evolution for . Besides, the expression patterns and co-expression network analysis show may multi-genes co-participate in regulating terpenoid biosynthesis. The findings revealed that potentially play a regulatory role in secondary metabolite synthesis, forming the basis for further functional characterization of genes with the intention of improving .