Probable transcription factor involved in the negative regulation of flowering time, probably through the photoperiodic and vernalization pathways; more efficient in cv. Landsberg erecta than in cv. Columbia background. Prevents premature flowering (PubMed:12724541, PubMed:25339407). Involved in the modulation of vernalization impact on flowering according to genotype acclimation to altitude (PubMed:25339407). Mostly expressed in roots, leaves and flowers, and, to a lower extent, in inflorescence, siliques, pollen and shoots. Repressed during vernalization (PubMed:12724541). Regulated by HAM1 and HAM2 via epigenetic modification of chromatins at H4K5 acetylation during flowering (PubMed:23273925).