Journal
SCIENCE
Volume 289, Issue 5480, Pages 768-771Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.289.5480.768
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- NIGMS NIH HHS [GM 56006] Funding Source: Medline
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The toc1 mutation causes shortened circadian rhythms in Light-grown Arabidopsis plants. Here, we report the same toc1 effect in the absence of tight input to the clock. We also show that TOC1 controls photoperiodic flowering response through clock function. The TOC1 gene was isolated and found to encode a nuclear protein containing an atypical response regulator receiver domain and two motifs that suggest a role in transcriptional regulation: a basic motif conserved within the CONSTANS family of transcription factors and an acidic domain. TOC1 is itself circadianly regulated and participates in a feedback Loop to control its own expression.
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