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The DNA-binding with one zinc finger ( Dof ) family of plant-specific transcription factors has a variety of important functions in gene transcriptional regulation, development, and stress responses. However, the structure and expression patterns of  Dof  family have not been identified in  Cleistogenes songorica , which is an important xerophytic and perennial gramineous grass in desert grassland. In this study, 50  Dof  genes were identified in  C. songorica  and could be classified into four groups. According to genome-wide analysis, 46 of 50  Dof  genes were located on 20 chromosomes, and the gene structure and conserved protein motif of these proteins were analyzed. In addition, phylogenetic analysis of  Dof  genes in  C. songorica ,  Arabidopsis thaliana ,  Oryza sativa , and  Brachypodium distachyon  estimated the evolutionary relationships, and these genes were grouped into seven clusters. Moreover, the expression profiles of these  Dof  genes in  C. songorica  were analyzed in response to high/low temperature, salinity, and ABA treatments. These results will provide valuable information for future studies on gene classification, cloning, and functional characterization of this family in  C. songorica .

Genome-Wide Analysis and Expression Profiles of the Dof Family in Cleistogenes songorica under Temperature, Salt and ABA Treatment