The timing of developmental transitions in plants

Cell. 2006 May 19;125(4):655-64. doi: 10.1016/j.cell.2006.05.005.


Plants rely heavily on environmental cues to control the timing of developmental transitions. We are beginning to better understand what determines the timing of two of these transitions, the switch from juvenile to adult vegetative development and the transition to flowering. In this review, we discuss how RNA silencing mechanisms may influence the juvenile-to-adult vegetative switch. We also describe the discovery and regulation of a component of "florigen," the mobile flowering promotion signal that is involved in the transition to flowering. Parallel themes are beginning to emerge from a molecular comparison of these two developmental transitions.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Biological Clocks
  • Circadian Rhythm / physiology
  • Environment*
  • Flowers / physiology
  • Light
  • Photoperiod
  • Plant Development*
  • Plant Proteins / metabolism
  • Plants / genetics
  • RNA Interference
  • RNA, Small Interfering / genetics
  • RNA, Small Interfering / metabolism
  • Signal Transduction / physiology
  • Time Factors


  • Plant Proteins
  • RNA, Small Interfering