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FD, a bZIP Protein Mediating Signals from the Floral Pathway Integrator FT at the Shoot Apex
FLOWERING LOCUS T (FT) is a conserved promoter of flowering that acts downstream of various regulatory pathways, including one that mediates photoperiodic induction through CONSTANS (CO), and is…
Hd3a, a rice ortholog of the Arabidopsis FT gene, promotes transition to flowering downstream of Hd1 under short-day conditions.
Results indicate that Hd 3a encodes a protein closely related to Arabidopsis FT and that the function and regulatory relationship with Hd1 and CO, respectively, of Hd3a and FT are conserved between rice (an SD plant) andArabidopsis (a long-day plant).
TWIN SISTER OF FT (TSF) acts as a floral pathway integrator redundantly with FT.
- A. Yamaguchi, Yasushi Kobayashi, K. Goto, M. Abe, T. Araki
- Environmental SciencePlant and Cell Physiology
- 1 August 2005
This work proposes that the phloem is the site where multiple regulatory pathways are integrated at the transcriptional regulation of FT and TSF and reveals additional complexity and spatial aspects of the regulatory network at the pathway integration level.
Move on up, it's time for change--mobile signals controlling photoperiod-dependent flowering.
Primarily through genetic analyses in two species, Arabidopsis thaliana and rice, the essentials of two central issues in plant biology are understood: how the appropriate photoperiod generates an inductive stimulus based on an external coincidence mechanism, and the nature of the mobile flowering signal, florigen.
Ectopic Expression of an FT Homolog from Citrus Confers an Early Flowering Phenotype on Trifoliate Orange (Poncirus trifoliata L. Raf.)
- T. Endo, T. Shimada, H. Fujii, Yasushi Kobayashi, T. Araki, M. Omura
- Biology, MedicineTransgenic research
- 1 October 2005
It was showed that constitutive expression of CiFT can reduce the generation time in trifoliate orange and segregated in F1 progeny in a Mendelian fashion.
Functional divergence of the TFL1‐like gene family in Arabidopsis revealed by characterization of a novel homologue
The TERMINAL FLOWER 1 (TFL1) gene of Arabidopsis plays an important role in regulating flowering time and in maintaining the fate of inflorescence meristem (IM). TFL1 is a homologue of CENTRORADIALIS…
CRYPTIC PRECOCIOUS/MED12 is a Novel Flowering Regulator with Multiple Target Steps in Arabidopsis
This work analyzed the CRYPTIC PRECOCIOUS (CRP) gene for the Arabidopsis counterpart of the MED12 subunit of the Mediator to suggest that MED12/CRP is a novel flowering regulator with multiple regulatory target steps both upstream and downstream of the key flowering regulators including FT florigen.
Cis-regulatory Changes at FLOWERING LOCUS T Mediate Natural Variation in Flowering Responses of Arabidopsis thaliana
Results indicate that allelic variation at pathway integrator genes such as FT can underlie phenotypic variability and that this may be achieved through cis-regulatory changes.
Molecular basis of late-flowering phenotype caused by dominant epi-alleles of the FWA locus in Arabidopsis.
- Yoko Ikeda, Yasushi Kobayashi, A. Yamaguchi, M. Abe, T. Araki
- BiologyPlant and Cell Physiology
- 1 February 2007
Yeast two-hybrid analysis and in vitro pull-down assay showed that FWA protein can specifically interact with FT protein, and tissue-specific ectopic expression of FWA provided further support for the shoot apex being the site of action of FT protein.
Transcriptional changes in CiFT-introduced transgenic trifoliate orange (Poncirus trifoliata L. Raf.).
Constitutive expression of each gene caused early flowering in transgenic Arabidopsis, suggesting that these genes could function as regulators of flowering time.