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Cell. 2000 Apr 28;101(3):331-40.

FKF1, a clock-controlled gene that regulates the transition to flowering in Arabidopsis.

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1
Department of Biochemistry and Cell Biology, Rice University, Houston, Texas 77005, USA.

Abstract

Plant reproduction requires precise control of flowering in response to environmental cues. We isolated a late-flowering Arabidopsis mutant, fkf1, that is rescued by vemalization or gibberellin treatment. We positionally cloned FKF1, which encodes a novel protein with a PAS domain similar to the flavin-binding region of certain photoreceptors, an F box characteristic of proteins that direct ubiquitin-mediated degradation, and six kelch repeats predicted to fold into a beta propeller. FKF1 mRNA levels oscillate with a circadian rhythm, and deletion of FKF1 alters the waveform of rhythmic expression of two clock-controlled genes, implicating FKF1 in modulating the Arabidopsis circadian clock.

PMID:
10847687
[Indexed for MEDLINE]
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