Genome-wide Transcription Factor Gene Prediction and their Expressional Tissue-Specificities in Maize

查看全文 作　　者：Yi [1]Jiang;Biao [1]Zeng;Hainan [1]Zhao;Mei [1]Zhang;Shaojun [1]Xie;Jinsheng [1]Lai

机构地区：[1]State Key Laboratory of Agrobiotechnology and National Maize Improvement Center,Department of Plant Genetics and Breeding,China Agricultural University,Beijing 100193,China

出　　处：《Journal of Integrative Plant Biology》索引2012年第54卷第9期,共15页

基　　金：supported by the National Basic Research Program of China (973 Program: 2009CB118400) 摘　　要：Transcription factors (TFs) are important regulators of gene expression. To better understand TF-encoding genes in maize (Zea mays L.), a genome-wide TF prediction was performed using the updated B73 reference genome. A total of 2 298 TF genes were identified, which can be classified into 56 families. The largest family, known as the MYB superfamily, comprises 322 MYB and MYB-related TF genes. The expression patterns of 2014 (87.64%) TF genes were examined using RNA-seq data, which resulted in the identification of a subset of TFs that are specifically expressed in particular tissues (including root, shoot, leaf, ear, tassel and kernel). Similarly, 98 kernel-specific TF genes were further analyzed, and it was observed that 29 of the kernel-specific genes were preferentially expressed in the early kernel developmental stage, while 69 of the genes were expressed in the late kernel developmental stage. Identification of these TFs, particularly the tissue-specific ones, provides important information for the understanding of development and transcriptional regulation of maize. 关键词：转录因子基因组织特异性全基因组玉米预测写意发育阶段 F基因

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Genome-wide Transcription Factor Gene Prediction and their Expressional Tissue-Specificities in Maize

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