Genomic Survey and Gene Expression Analysis of the Basic Leucine Zipper Transcription Factor Family in Rice

• DOI: 10.1104/pp.107.112821
• Publication Date: 2007-12-08T01:53:40Z
• Authors: Aashima Nijhawan; Mukesh Jain; Akhilesh K. Tyagi; Jitendra P. Khurana
• Keywords: bZIP domain; ATF3

The basic leucine (Leu) zipper (bZIP) proteins compose a family of transcriptional regulators present exclusively in eukaryotes. bZIP characteristically harbor domain composed two structural features: DNA-binding region and the Leu dimerization region. They have been shown to regulate diverse plant-specific phenomena, including seed maturation germination, floral induction development, photomorphogenesis, are also involved stress hormone signaling. We identified 89 transcription factor-encoding genes rice (Oryza sativa) genome. Their chromosomal distribution sequence analyses suggest that factor has evolved via gene duplication. phylogenetic relationship among domains as well with from other plant factors suggests homologous exist plants. Similar intron/exon patterns were observed hinge regions their domains. Detailed analysis done identify additional conserved motifs outside predict site specificity properties, which helped classify them into different groups subfamilies, respectively. Expression analyzed by full-length cDNA expressed tag-based expression profiling. This profiling was complemented microarray analysis. results indicate specific or coexpression starting transition various stages panicle development. displayed differential seedlings response abiotic light irradiation. An effort made link structure pattern function, based on information obtained our earlier known results. will be important for functional characterization rice.