Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

The quest for florigen: a review of recent progress

Laurent Corbesier and George Coupland
Journal of Experimental Botany
Vol. 57, No. 13, Special Issue: Major Themes in Flowering Research (2006), pp. 3395-3403
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/24036027
Page Count: 9
  • Download ($42.00)
  • Cite this Item
The quest for florigen: a review of recent progress
Preview not available

Abstract

The photoperiodic induction of flowering is a systemic process requiring translocation of a floral stimulus from the leaves to the shoot apical meristem. In response to this stimulus, the apical meristem stops producing leaves to initiate floral development; this switch in morphogenesis involves a change in the identity of the primordia initiated and in phyllotaxis. The physiological study of the floral transition has led to the identification of several putative floral signals such as sucrose, cytokinins, gibberellins, and reduced N-compounds that are translocated in the phloem sap from leaves to the shoot apical meristem. On the other hand, the genetic approach developed more recently in Arabidopsis thaliana allowed the discovery of many genes that control flowering time. These genes function in 'cascades' within four promotive pathways, the 'photoperiodic', 'autonomous', 'vernalization', and 'gibberellin' pathways, which all converge on the 'integrator' genes SUPPRESSOR OF OVEREXPRESSION OF CO 1 (SOC1) and FLOWERING LOCUS T (FT). Recently, several studies have highlighted a role for a product of FT as a component of the floral stimulus or 'florigen'. These recent advances and the proposed mode of action of FT are discussed here.

Page Thumbnails

  • Thumbnail: Page 
[3395]
    [3395]
  • Thumbnail: Page 
3396
    3396
  • Thumbnail: Page 
3397
    3397
  • Thumbnail: Page 
3398
    3398
  • Thumbnail: Page 
3399
    3399
  • Thumbnail: Page 
3400
    3400
  • Thumbnail: Page 
3401
    3401
  • Thumbnail: Page 
3402
    3402
  • Thumbnail: Page 
3403
    3403