Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Arabidopsis DOF transcription factors act redundantly to reduce CONSTANS expression and are essential for a photoperiodic flowering response.
Año:2009
Áreas de investigación
  • Biología molecular
Datos
Descripción
Abstract Flowering of Arabidopsis is induced by long summer days (LDs). The transcriptional regulator CONSTANS (CO) promotes flowering, and its transcription is increased under LDs. We systematically misexpressed transcription factors in companion cells and identified several DOF proteins that delay flowering by repressing CO transcription. Combining mutations in four of these, including CYCLING DOF FACTOR 2 (CDF2), caused photoperiod-insensitive early flowering by increasing CO mRNA levels. CO transcription is promoted to differing extents by GIGANTEA (GI) and the F-box protein FKF1. We show that GI stabilizes FKF1, thereby reducing CDF2 abundance and allowing transcription of CO. Despite the crucial function of GI in wild-type plants, introducing mutations in the four DOF-encoding genes into gi mutants restored the diurnal rhythm and light inducibility of CO. Thus, antagonism between GI and DOF transcription factors contributes to photoperiodic flowering by modulating an underlying diurnal rhythm in CO transcript levels.
Internacional
Si
JCR del ISI
Si
Título de la revista
DEVELOPMENTAL CELL
ISSN
1534-5807
Factor de impacto JCR
12,882
Información de impacto
Volumen
DOI
Número de revista
0
Desde la página
75
Hasta la página
86
Mes
ENERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Participante: F Fornara
  • Participante: N Sauerbrunn
  • Participante: M Rühl
  • Autor: Jose Antonio Jarillo Quiroga (UPM)
  • Participante: G Coupland
  • Participante: KC Panigrahi
  • Participante: L Gissot
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
S2i 2023 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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