Emerging insights into florigen transport

Curr Opin Plant Biol. 2013 Oct;16(5):607-13. doi: 10.1016/j.pbi.2013.06.001. Epub 2013 Jun 28.

Abstract

The photoperiodic control of flowering in plants begins with the perception of seasonal changes in day length and consequential induction of a mobile floral stimulus in leaves. This stimulus called florigen is transported from leaves to the shoot apical meristem to provoke the initiation of floral meristems. Decades of efforts have identified that the proteins encoded by FLOWERING LOCUS T (FT) in Arabidopsis and its orthologs in other plant species are part of the long-sought florigen. Emerging evidence suggests that long-distance transport of FT towards the shoot apical meristem occurs through the phloem in a regulated manner. This review summarizes the recent advances in understanding florigen transport and discusses the proven and potential regulators required for this process.

Publication types

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

MeSH terms

  • Arabidopsis / metabolism
  • Arabidopsis Proteins / metabolism*
  • Florigen / metabolism*
  • Flowers / metabolism
  • Meristem / metabolism
  • Photoperiod
  • Plant Leaves / metabolism
  • Plants / metabolism*
  • Protein Structure, Tertiary
  • Protein Transport
  • Signal Transduction*

Substances

  • Arabidopsis Proteins
  • FT protein, Arabidopsis
  • Florigen