title: Repressors of photomorphogenesis.
abstract: The internal programs of plant development are informed in a profound way by environmental light conditions. This review summarizes the contribution of repressor proteins to the light-signaling machinery during seedling development, and discusses the integration of repressors with other, positively acting, light-signaling pathways and auxin and brassinosteroid hormone-signaling pathways. The main focus is placed on the mode of action of the COP/DET/FUS proteins, which were first identified in Arabidopsis but are now emerging in other plants. Their role in regulating protein turnover through ubiquitination is reviewed in light of parallel ongoing investigations of COP/DET/FUS homologues in metazoans and fungi.
authors.affiliation: Department of Botany, The University of Tennessee, Knoxville 37996, USA.
authors.forename: Tae-Houn
authors.initials: TH
authors.lastname: Kim
authors.forename: Byung-Hoon
authors.initials: BH
authors.lastname: Kim
authors.forename: Albrecht G
authors.initials: AG
authors.lastname: von Arnim
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D010777:Photochemistry; D010788:Photosynthesis / Q000502:physiology*; D010937:Plant Growth Regulators / Q000235:genetics / Q000378:metabolism; D021381:Protein Transport / Q000502:physiology; D012097:Repressor Proteins / Q000235:genetics / Q000378:metabolism*; D036226:Seedlings / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology
chemical_list: D029681:Arabidopsis Proteins; D010937:Plant Growth Regulators; D012097:Repressor Proteins