Plant Diversity ›› 2014, Vol. 36 ›› Issue (03): 349-357.DOI: 10.7677/ynzwyj201413146

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Analyses of the UBX Protein Family in Populus and Vitis

LIU DeTuan1**, CAO Jun2**, XU Kun1***   

  1. 1 Lijiang Alpine Botanic Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;
    2 Institute of Life Sciences, Jiangsu University, Jiangsu 212013, China
  • Received:2013-07-02 Online:2014-05-25 Published:2013-08-20
  • Supported by:

    The “Strategic Priority Research Program” of the Chinese Academy of Sciences (XDA05050206)


The UBX (Ubiquitin regulatory X) protein family plays important roles in ubiquitinrelated processes including cellcycle control, transcriptional regulation, signal transduction, development, stress response, programmed cell death, endocytosis and DNA repair. However, this family has not been studied to date in Populus and Vitis. To better understand the UBX in these two plants, relevant analyses about gene structure, chromosomal location, duplication, phylogenetic relationships were performed. Our study provides the first systematic analysis of the Vitis and Populus UBX proteins. The exon/intron gene structure and motif composition were relatively conserved in the same group. Duplication analyses suggested that tandem duplication and segmental duplication contribute to the expansion of Populus and Vitis UBX gene family, while some gene loss has also occurred. The results presented basic information on UBX proteins, which may show a scaffold for future functional analysis of this family.

Key words: UBX, Gene structure, Gene duplication, Phylogeny

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