title: Flowering time regulation: photoperiod- and temperature-sensing in leaves.
abstract: Plants monitor changes in photoperiod and temperature to synchronize their flowering with seasonal changes to maximize fitness. In the Arabidopsis photoperiodic flowering pathway, the circadian clock-regulated components, such as FLAVIN-BINDING, KELCH REPEAT, F-BOX 1 and CONSTANS, both of which have light-controlled functions, are crucial to induce the day-length specific expression of the FLOWERING LOCUS T (FT) gene in leaves. Recent advances indicate that FT transcriptional regulation is central for integrating the information derived from other important internal and external factors, such as developmental age, amount of gibberellic acid, and the ambient temperature. In this review, we describe how these factors interactively regulate the expression of FT, the main component of florigen, in leaves.
authors.affiliation: Department of Biology, University of Washington, Seattle, WA 98195-1800, USA.
authors.forename: Young Hun
authors.initials: YH
authors.lastname: Song
authors.forename: Shogo
authors.initials: S
authors.lastname: Ito
authors.forename: Takato
authors.initials: T
authors.lastname: Imaizumi
mesh_terms: D035264:Flowers / Q000235:genetics / Q000502:physiology*; D017440:Photoperiod; D018515:Plant Leaves / Q000502:physiology*; D015398:Signal Transduction; D013696:Temperature; D013997:Time Factors
keywords: FLOWERING LOCUS T; ambient temperature; florigen; flowering; gibberellic acid; photoperiod