title: Identification of gene functions associated to active and dormant buds in Arabidopsis.
abstract: In Arabidopsis, axillary buds may become dormant in response to a far-red rich light or to increased apical dominance. BRANCHED1 (BRC1) is required for this response. Transcriptional profiling studies of wild-type and brc1 mutant buds allowed the identification of sets of BRC1-dependent genes including a group of ABA-related genes upregulated in dormant buds. By using BRC1 inducible lines we demonstrate that 2 of these ABA response factors, ABF3 and ABI5, are positively regulated in axillary buds by BRC1 after induction. To get further insight into the genetic control of the growth-to-dormancy transition in buds we have also compared this transcriptomic data with 2 additional "active vs dormant bud" transcriptomic data sets and found "core" co-regulated gene networks tightly associated to each condition.
authors: Departamento de Genética Molecular de Plantas; Centro Nacional de Biotecnología-CSIC; Campus Universidad Autónoma de Madrid; Madrid, Spain.
authors: Eduardo
authors: E
authors: González-Grandío
authors: Departamento de Genética Molecular de Plantas; Centro Nacional de Biotecnología-CSIC; Campus Universidad Autónoma de Madrid; Madrid, Spain.
authors: Pilar
authors: P
authors: Cubas
mesh_terms: D000040:Abscisic Acid / Q000494:pharmacology; D017360:Arabidopsis / Q000187:drug effects / Q000235:genetics*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D035264:Flowers / Q000187:drug effects / Q000235:genetics*; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D017343:Genes, Plant; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism
chemical_list: D029681:Arabidopsis Proteins; C521259:BRC1 protein, Arabidopsis; D012333:RNA, Messenger; D014157:Transcription Factors; D000040:Abscisic Acid
keywords: ABA; Arabidopsis; BRANCHED1; axillary bud; bud dormancy; cell cycle; shade avoidance; shoot branching