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Memorias de investigación
Artículos en revistas:
EARLY IN SHORT DAYS 7 (ESD7) encodes the catalytic subunit of the DNA polymerase epsilon and is required for flowering repression through a mechanism involving epigenetic gene silencing.
Año:2009
Áreas de investigación
  • Biología molecular
Datos
Descripción
We have characterized a mutation affecting the Arabidopsis EARLY IN SHORT DAYS 7 (ESD7) gene encoding the catalytic subunit of DNA polymerase epsilon (¿), AtPOL2a. The esd7-1 mutation causes early flowering independently of photoperiod, shortened inflorescence internodes and altered leaf and root development. esd7-1 is a hypomorphic allele whereas knockout alleles displayed an embryo-lethal phenotype. The esd7 early flowering phenotype requires functional FT and SOC1 proteins and might also be related to the misregulation of AG and AG-like gene expression found in esd7. Genes involved in the modulation of chromatin structural dynamics, such as LHP1/TFL2 and EBS, which negatively regulate FT expression, were found to interact genetically with ESD7. In fact a molecular interaction between the carboxy terminus of ESD7 and TFL2 was demonstrated in vitro. Besides, fas2 mutations suppressed the esd7 early flowering phenotype and ICU2 was found to interact with ESD7. Discrete regions of the chromatin of FT and AG loci were enriched in activating epigenetic marks in the esd7-1 mutant. We concluded that ESD7 might be participating in processes involved in chromatinmediated cellular memory. Received 10 August 2009; revised 4 November 2009; accepted 9 November 2009; published online 31 December 2009.
Internacional
Si
JCR del ISI
Si
Título de la revista
PLANT JOURNAL
ISSN
0960-7412
Factor de impacto JCR
6,493
Información de impacto
Volumen
DOI
10.1111/j.1365-313X.2009.04093.x
Número de revista
0
Desde la página
623
Hasta la página
636
Mes
ENERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Participante: Maria M. Martín-Trillo
  • Autor: Ivan Del Olmo Montoro (UPM)
  • Autor: Manuel Angel Piñeiro Galvin (UPM)
  • Participante: José M. Martínez-Zapater
  • Autor: Gemma López García (UPM)
  • Autor: Jose Antonio Jarillo Quiroga (UPM)
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
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