J Integr Plant Biol. ›› 2013, Vol. 55 ›› Issue (6): 552-566.DOI: 10.1111/jipb.12043

• Molecular Ecology and Evolution • Previous Articles    

Genome-wide Analysis of Plant-specific Dof Transcription Factor Family in Tomato

Xiaofeng Cai1,2†, Yuyang Zhang1,2†, Chanjuan Zhang1, Tingyan Zhang1, Tixu Hu1, Jie Ye1, Junhong Zhang1, Taotao Wang1, Hanxia Li1 and Zhibiao Ye1,2*   

  1. 1The Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
    2The National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
  • Received:2012-08-27 Accepted:2013-02-19 Published:2013-06-12
  • About author:These authors contributed equally to this research.
    *Corresponding author Tel: +86 27 8728 6867; Fax: +86 27 8728 0016; E-mail: zbye@mail.hzau.edu.cn

Abstract:

The Dof (DNA binding with One Finger) family encoding single zinc finger proteins has been known as a family of plant-specific transcription factors. These transcription factors are involved in a variety of functions of importance for different biological processes in plants. In the current study, we identified 34 Dof family genes in tomato, distributed on 11 chromosomes. A complete overview of SlDof genes in tomato is presented, including the gene structures, chromosome locations, phylogeny, protein motifs and evolution pattern. Phylogenetic analysis of 34 SlDof proteins resulted in four classes constituting six clusters. In addition, a comparative analysis between these genes in tomato, Arabidopsis and rice was also performed. The tomato Dof family expansion has been dated to recent duplication events, and segmental duplication is predominant for the SlDof genes. Furthermore, the SlDof genes displayed differential expression either in their transcript abundance or in their expression patterns under normal growth conditions. This is the first step towards genome-wide analyses of the Dof genes in tomato. Our study provides a very useful reference for cloning and functional analysis of the members of this gene family in tomato and other species.

Cai X, Zhang Y, Zhang C, Zhang T, Hu T, Ye J, Zhang J, Wang T, Li H, Ye Z (2013) Genome-wide analysis of plant-specific dof transcription factor family in tomato. J. Integr. Plant Biol. 55(6), 552–566.

Key words: Dof, Tomato, duplication, gene expression, motif, phylogenetic analysis

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