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Fig. 3 | Genome Biology

Fig. 3

From: Molecular memories in the regulation of seasonal flowering: from competence to cessation

Fig. 3

Regulatory modes of FLOWERING LOCUS T (FT). A 5.7-kb region upstream of the TSS is required for LD-mediated activation of FT. a Repressed state before floral induction. Repressive factors with evidence of DNA binding properties are depicted as squares, and their cognate DNA motifs are indicated. Repressive factors proposed to bind to chromatin marks or recruited by other factors are depicted as ovals. Below is diagrammed the H3K27me3 pattern [31] and DNase-I hypersensitivity profile [54] of the FT locus. Not mentioned in the text is CYCLIC DOF FACTOR 1 (CDF1), a protein that has been reported to repress FT expression through direct binding of the proximal promoter [2]. b Active state upon floral induction by LDs. Activating factors with evidence of DNA binding properties are depicted as squares. Activating factors proposed to bind to chromatin marks or recruited by other factors are depicted as ovals. Not mentioned in the text are GIGANTEA (GI), FLAVIN KELCH F BOX 1 (FKF1) and Cryptochrome Interacting Basic-helix-loop-helix 1 (CIB1), FT-inducing proteins that have been reported to bind directly to the proximal promoter [2]. LD long day. See main text for details of the protein identities

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