The transcription factor FUSCA3 controls developmental timing in Arabidopsis through the hormones gibberellin and abscisic acid

Developmental Cell
Sonia GazzarriniPeter McCourt

Abstract

Although plants continually produce different organs throughout their life cycle, little is known about the factors that regulate the timing of a given developmental program. Here we report that the restricted expression of FUS3 to the epidermis is sufficient to control foliar organ identity in Arabidopsis by regulating the synthesis of two hormones, abscisic acid and gibberellin. These hormones in turn regulate the rates of cell cycling during organ formation to determine whether an embryonic or adult leaf will emerge. We also show that FUS3 expression is influenced by the patterning hormone, auxin, and therefore acts as a nexus of hormone action during embryogenesis. The identification of lipophillic hormones downstream of a heterochronic regulator in Arabidopsis has parallels to mechanisms of developmental timing in animals and suggests a common logic for temporal control of developmental programs between these two kingdoms.

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Citations

Jan 13, 2006·Planta·P C Bonham-SmithS R Abrams
May 25, 2007·Planta·Hongyun WangYun Lin
Sep 19, 2009·Journal of Chemical Biology·Omid KaramiAghil Mahmoudi Pour
Feb 22, 2008·Proceedings of the National Academy of Sciences of the United States of America·Sandra L StoneJohn J Harada
Jun 10, 2008·The Journal of Biological Chemistry·Heng ZhangJoe Ogas
Aug 15, 2008·Plant & Cell Physiology·Jérôme Verdier, Richard D Thompson
Jan 15, 2013·Plant Physiology·Fangfang Wang, Sharyn E Perry
May 30, 2006·The Plant Cell·Alexandra ToFrançois Parcy
May 3, 2005·Annual Review of Plant Biology·Eiji Nambara, Annie Marion-Poll
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May 3, 2011·BMC Plant Biology·Prakash VenglatRaju Datla
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