Genome-wide identiffcation of the WRKY gene family in poplar and the positive role of PsnWRKY95 in response to cadmium stress.

ABSTRACT: WRKY is a crucial transcription factor family in plants, participating in a variety of physiological processes and stress responses. In this study, we identified 102 WRKY genes from the poplar genome, randomly distributed on 18 chromosomes and one scaffold, and classified them into three subgroups based on phylogenetic analysis. Members of the same subgroup form similar structures due to their shared relatively conservative domains. All poplar WRKY proteins are hydrophilic, located in the cell nucleus, and form target relationships with a large number of miRNAs, with their promoter containing a large number of stress defense elements. The expansion of the poplar WRKY family mainly occurs through segmental duplication, and they also have abundant cross-species collinearity. Based on RNA-Seq

SUBMITTER: Ma Y 

PROVIDER: S-EPMC12431293 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature