the family of dof transcription factors in brachypodium distachyon phylogenetic comparison with rice and barley dofs and expression profiling景深转录因子家族在brachypodium distachyon系统发育与大米和大麦自由度和表达分析.pdfVIP

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the family of dof transcription factors in brachypodium distachyon phylogenetic comparison with rice and barley dofs and expression profiling景深转录因子家族在brachypodium distachyon系统发育与大米和大麦自由度和表达分析.pdf

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the family of dof transcription factors in brachypodium distachyon phylogenetic comparison with rice and barley dofs and expression profiling景深转录因子家族在brachypodium distachyon系统发育与大米和大麦自由度和表达分析

Hernando-Amado et al. BMC Plant Biology 2012, 12:202 /1471-2229/12/202 RESEARCH ARTICLE Open Access The family of DOF transcription factors in Brachypodium distachyon: phylogenetic comparison with rice and barley DOFs and expression profiling † † * Sara Hernando-Amado , Virginia González-Calle , Pilar Carbonero and Cristina Barrero-Sicilia Abstract Background: Transcription factors (TFs) are proteins that have played a central role both in evolution and in domestication, and are major regulators of development in living organisms. Plant genome sequences reveal that approximately 7% of all genes encode putative TFs. The DOF (DNA binding with One Finger) TF family has been associated with vital processes exclusive to higher plants and to their close ancestors (algae, mosses and ferns). These are seed maturation and germination, light-mediated regulation, phytohormone and plant responses to biotic and abiotic stresses, etc. In Hordeum vulgare and Oryza sativa, 26 and 30 different Dof genes, respectively, have been annotated. Brachypodium distachyon has been the first Pooideae grass to be sequenced and, due to its genomic, morphological and physiological characteristics, has emerged as the model system for temperate cereals, such as wheat and barley. Results: Through searches in the B. distachyon genome, 27 Dof genes have been identified and a phylogenetic comparison with the Oryza sativa and the Hordeum vulgare DOFs has been performed. To explore the evolutionary relationship among these DOF proteins, a combined phylogenetic tree has been constructed with the Brachypodium DOFs and those from rice and barley. This phylogenetic analysis has classified the DOF proteins into four Major Cluster of Orthologous Group