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Orchestrated action of histone marks control reproductive development in Arabidopsis
Research Areas
  • Natural sciences and health sciences
The success of sexual reproduction in plants depends on an appropriate timing of flowering and a proper inflorescence growth and flower development to ensure the optimal balance between the number of seeds and the production of resources through photosynthesis. The plant specific chromatin protein EARLY BOLTING IN SHORT DAYS (EBS) is required for proper regulation of flowering time through the repression of the floral integrator gene FT. EBS specifically recognizes di- and trimethylated lysine 4 (K4) in histone H3 (H3K4me2/3), and binds regulatory regions of FT chromatin. In addition, EBS interacts with histone deacetylases such as HDA6 and mutations in the EBS gene cause an increase in the levels of histone H3 acetylation throughout the FT gene body [1]. Our recent studies have revealed a role for EBS in the control of additional developmental processes related to reproductive growth. Under short day conditions plants deficient in EBS function display multiple morphological alterations including reduced apical dominance and phyllotaxy abnormalities. Global gene expression profiling and chromatin immunoprecipitation techniques revealed deregulation of genetic networks controlling shoot apical meristem function and misexpression of class B, C and E floral identity genes that result in defects in flower development including the appearance of frequent floral reversion events. Most recent advances in our understanding of the molecular mechanisms underlying EBS activity in the chromatin-mediated modulation of different aspects of reproductive development will be presented.
Workshop New Frontiers in Plant Biology
Centro de Biotecnología y Genómica de Plantas
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Orchestrated action of histone marks control reproductive development in Arabidopsis
  • Autor: Dorota Komar . (UPM)
  • Autor: Jose Antonio Jarillo Quiroga (UPM)
  • Autor: Manuel Angel Piñeiro Galvin (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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