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GENES & DEVELOPMENT 21:2371-2384, 2007
©2007 by Cold Spring Harbor Laboratory Press; ISSN 0890-9369/ $5.00
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REVIEW

Move on up, it’s time for change—mobile signals controlling photoperiod-dependent flowering

Yasushi Kobayashi and Detlef Weigel1

Department of Molecular Biology, Max Planck Institute for Developmental Biology, D-72076, Tübingen, Germany

Plants do not bloom randomly—but how do they know when and where to make flowers? Here, we review molecular mechanisms that integrate spatial and temporal information in day-length-dependent flowering. Primarily through genetic analyses in two species, Arabidopsis thaliana and rice, we today understand the essentials of two central issues in plant biology: how the appropriate photoperiod generates an inductive stimulus based on an external coincidence mechanism, and the nature of the mobile flowering signal, florigen, which relays photoperiod-dependent information from the leaf to the growing tip of the plant, the shoot apex.

[Keywords: Flowering; floral induction; photoperiod; CONSTANS; FLOWERING LOCUS T; Arabidopsis]

1 Corresponding author.

E-MAIL weigel{at}weigelworld.org; FAX 49-7071-601-1412.

Article is online at http://www.genesdev.org/cgi/doi/10.1101/gad.1589007


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