The International Journal of Developmental Biology

Int. J. Dev. Biol. 49: 585 - 593 (2005)

Vol 49, Issue 5-6

Special Issue: Plant Development

Flowering: a time for integration

Published: 1 August 2005

François Parcy*

Physiologie Cellulaire Végétale. CNRS UMR5168- CEA- INRA- UJF, Grenoble, France


Flowering time is under the control of multiple environmental cues such as photoperiod and exposure to cold temperatures (vernalization). A few regulators named integrators of flowering time signals (LEAFY, SOC1 /AGL20 and FT ) integrate inputs from the different flowering cascades and convey the resulting outcome to floral meristem identity genes at the shoot apex. Here we review the current knowledge about the expression of integrators, their mode of action, their potential target genes and the nature of their mutual interactions. We emphasize the questions that have been generated by recent progress in this field and that remain to be addressed.


flowering, floral pathway integrator, LEAFY, SOC1, FT

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