Find in Library

The ubiquitination pathway is essential for several developmental phases in plants, and the U-box protein family of ubiquitin ligases plays an important role in this process. However, little is known about pomegranate’s <i>PUB</i> genes. In this investigation, the pomegranate <i>U-box</i> gene family was identified using whole-genome sequencing data. We identified a total of 56 members of the pomegranate <i>U-box</i> family based on the U-box domain, and the <i>PgPUBs</i> were classified into four groups. Chromosomal localization, phylogenetic analysis, motif distribution, gene duplications, cis-acting elements, and expression profiling were also investigated. The <i>PgPUB</i> genes were unevenly distributed among the eight pomegranate chromosomes, and collinear duplicated genes were identified between the <i>Arabidopsis thaliana</i> genome and the <i>Punica granatum</i> genome. Furthermore, the gene expression analysis revealed that expression of <i>U-box</i> genes in pomegranate was induced by abiotic stressors. Collectively, our findings provide insight into the <i>U-box</i> gene family and will assist in understanding the functional divergence of <i>U-box</i> genes in <i>Punica granatum</i> L.