Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
A regulatory module controlling GA-mediated endosperm cell expansion is critical for seed germination in Arabidopsis
Year:2018
Research Areas
  • Molecular, cellular and genetic biology,
  • Plants and animal biology and ecology
Information
Abstract
A key component of seed germination is the interplay of mechanical forces governing embryo growth and the surrounding restraining endosperm tissue. Endosperm cell separation is therefore thought to play a critical role in the control of this developmental transition. Here we demonstrate that in Arabidopsis thaliana seeds, endosperm cell expansion is a key component of germination. Endosperm cells expand to accommodate embryo growth prior to germination. We show that this is an actively regulated process supported by spatiotemporal control of the cell expansion gene EXPANSIN 2 ( EXPA2). The NAC transcription factors NAC25 and NAC1L were identified as upstream regulatory effectors of EXPA2 expression, GA-mediated endosperm expansion and seed germination. The DELLA protein RGL2 repressed activation of EXPA2 promoter by NAC. Our findings demonstrate a key role of this gene network in regulating endosperm cell-expansion to control the seed to seedling transition.
International
Si
JCR
Si
Title
Molecular Plant
ISBN
1674-2052
Impact factor JCR
9,326
Impact info
Datos JCR del año 2017/2018
Volume
10.1016/j.molp.2018.10.009
Journal number
In press
From page
In press
To page
In press
Month
SIN MES
Ranking
4/222 = 1,8%
Participants
  • Autor: Rocío Sánchez Montesinos (UPM)
  • Autor: Laura Bouza Morcillo (UPM)
  • Autor: Julietta Marquez (Universidad de Nottingham)
  • Autor: Melania Ghita (Universidad de Nottingham)
  • Autor: Salva Duran-Nebreda (Universidad de Birmingham)
  • Autor: Luis Gomez Fernandez (UPM)
  • Autor: Michael J. Holdsworth (Universidad de Nottingham)
  • Autor: George Bassel (Universidad de Birmingham)
  • Autor: Luis Oñate Sanchez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Centro de Biotecnología y Genómica de Plantas, CBGP
  • Departamento: Sistemas y Recursos Naturales
  • Departamento: Biotecnología - Biología Vegetal
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)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)