Journal
PLANT JOURNAL
Volume 49, Issue 1, Pages 103-114Publisher
WILEY
DOI: 10.1111/j.1365-313X.2006.02939.x
Keywords
CREB-binding protein/p300; histone acetyltransferase; Histone deacetylase; FLOWERING LOCUS C; flowering; transcription
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CREB-binding protein (CBP) and its homolog p300 possess histone acetyltransferase activity and function as key transcriptional co-activators in the regulation of gene expression that controls differentiation and development in animals. However, the role of CBP/p300-like genes in plants has not yet been elucidated. Here, we show that Arabidopsis CBP/p300-like genes promote flowering by affecting the expression of a major floral repressor FLOWERING LOCUS C (FLC). Although animal CBP and p300 generally function as co-activators, Arabidopsis CBP/p300-like proteins are required for the negative regulation of FLC. This CBP/p300-mediated FLC repression may involve reversible protein acetylation independent of histone modification within FLC chromatin.
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