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

作     者：Yi Jiang Biao Zeng Hainan Zhao Mei Zhang Shaojun Xie Jinsheng Lai 

作者机构：State Key Laboratory of Agrobiotechnology and National Maize Improvement CenterDepartment of Plant Genetics and BreedingChina Agricultural UniversityBeijing 100193China 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2012年第54卷第9期

页      面：616-630页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 090102[农学-作物遗传育种] 071002[理学-动物学] 

基　　金：supported by the National Basic Research Program of China (973 Program: 2009CB118400) 

主　　题：Genome-wide maize tissue-specific transcription factor. 

摘      要：Transcription factors （TFs） are important regulators of gene expression. To better understand TFencoding 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.