Genome-wide Analysis of Plant-specific Dof Transcription Factor Family in Tomato
Genome-wide Analysis of Plant-specific Dof Transcription Factor Family in Tomato
复制标题
番茄植物特异性 Dof 转录因子家族的全基因组分析
DOI：
10.1111/jipb.12043
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发表时间：
2013-06-01
影响因子：
11.4
通讯作者：
Ye, Zhibiao
中科院分区：
文献类型：
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作者：
Cai, Xiaofeng;Zhang, Yuyang;Ye, Zhibiao
Dof （DNA binding with One Finger）家族编码单锌指蛋白，是植物特异性转录因子家族。这些转录因子在植物的不同生物过程中起着重要的作用。本研究在番茄中鉴定出34个Dof家族基因，分布在11条染色体上。对番茄SlDof基因的结构、染色体位置、系统发育、蛋白基序和进化模式等方面进行了全面的综述。对34个SlDof蛋白进行系统发育分析，得到4类6簇。此外，还对这些基因在番茄、拟南芥和水稻中的表达进行了比较分析。番茄Dof家族的扩展可以追溯到最近的重复事件，片段重复是SlDof基因的主要特征。此外，在正常生长条件下，SlDof基因在转录物丰度或表达模式上都表现出差异。这是对番茄Dof基因进行全基因组分析的第一步。本研究为该基因家族成员在番茄和其他物种中的克隆和功能分析提供了有益的参考。
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.