Probable transcription factor that promotes flowering, especially in response to vernalization by short periods of cold, in an FLC-inpedendent manner. Interacts with SOC1 and AGL21. Mostly expressed in the outer layers of the root meristem (lateral root cap and epidermis) and in the central cylinder cells of mature roots. Also present in rosette leaves and seedlings and, to a lesser extent, in cauline leaves and flowers. Enriched in apices including the shoot apical meristem and developing leaf primordia. Maintained at very low levels by the polycomb-group (PcG) proteins MSI1, CLF, and EMF2 via histone methylation (H3K27me3). Derepressed upon cold treatment (vernalization). Decreased response to vernalization, the promotion of flowering by prolonged cold.