Genome-wide identification, characterization, evolution and expression analysis of the gene family in potato ().

The () gene is a key player in environmental stress response and has been identified in many multidimensional tube plant species. However, there are few studies on the gene in potato. In this study, we used genome-wide identification to identify 31 genes in potato. Among the 12 potato chromosomes, the gene was distributed on 11 chromosomes, among which the third chromosome did not have a family member, while the tenth chromosome had the most members with 11 members. 22 of the 31 had a classical gene structure, with one exon and no intron. The conserved DIR domain accounts for most of the proteins in the 27 . The structure of the gene was analyzed and ten different motifs were detected. The gene was divided into three groups according to its phylogenetic relationship, and 22 duplicate genes were identified. In addition, four kinds of cis-acting elements were detected in all 31 promoter regions, most of which were associated with biotic and abiotic stress. The findings demonstrated that the StDIR gene exhibited specific responses to cold stress, salt stress, ABA, and drought stress. This study provides new candidate genes for improving potato's resistance to stress.