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Analysis of Brassica rapa ESTs: gene discovery and expression patterns of AP2/ERF family genes

文献类型: 外文期刊

作者: Zhuang, Jing 1 ; Xiong, Ai-Sheng 1 ; Peng, Ri-He 1 ; Gao, Feng 1 ; Zhu, Bo 1 ; Zhang, Jian 3 ; Fu, Xiao-Yan 1 ; Jin, Xiao 1 ;

作者机构: 1.Shanghai Acad Agr Sci, Shanghai 201106, Peoples R China

2.Nanjing Agr Univ, Nanjing 210095, Peoples R China

3.Alberta Res Council Canada, Edmonton Vegreville, AB T9C 1T4, Canada

4.Yangzhou Univ, Yangzhou 225009, Peoples R China

关键词: Brassica rapa;Arabidopsis thaliana.;AP2/ERF;Transcription factor;Expression pattern;Internet resource.

期刊名称:MOLECULAR BIOLOGY REPORTS ( 影响因子:2.316; 五年影响因子:2.357 )

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收录情况: SCI

摘要: Chinese cabbage (Brassica rapa subsp. pekinensis) is among the most important vegetables and is widely cultivated in world. Genes in the AP2/ERF family encode transcriptional regulators that serve a variety of functions in the plants. Expressed sequence tags (ESTs) are created by partially sequencing randomly isolated gene transcripts and have proved valuable in molecular biology. Starting from the database with 142 947 ESTs of B. rapa, 62 putative AP2/ERF family genes were identified by in silico cloning using the conserved AP2/ERF domain amino acid sequence of Arabidopsis thaliana as a probe. Based on the number of AP2/ERF domains and functions of the genes, the AP2/ERF transcription factors from B. rapa were classified into four subfamilies (DREB, ERF, AP2 and RAV). Using large-scale available EST information as a source of expression data for digital expression profiling, differentially detected genes were identified among diverse plant tissues. Roots contained the largest number of transcripts of the AP2/ERF family genes, followed by leaves and seeds. Only a few of the 62 AP2/ERF family genes were detected in all tissues: most were detected only in some tissues but not in others. The maximum detected was that of BraERF-B2-5, and it was recorded from seed tissue.

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