Transcriptional activator acting positively in the phytochrome B signaling pathway. Functions redundantly with VOZ2 to promote flowering downstream of phytochrome B (phyB). Down-regulates 'FLOWERING LOCUS C' (FLC) and up-regulates 'FLOWERING LOCUS T' (FT). Binds to the 38-bp cis-acting region of the AVP1 gene. Interacts with phyB in the cytoplasm and is translocated to the nucleus at signal transmission, where it is subjected to degradation in a phytochrome-dependent manner. Homodimer (By similarity). Interacts with phytochrome B (phyB). Cytoplasmic in darkness, and translocated to the nucleus depending on the light quality mediated by phytochromes. Ubiquitous. Expressed in the vascular bundles of various tissues, specifically in the phloem. By far-red light. The VOZ region includes a DNA-binding domain and a dimerization domain. Contains an atypical zinc-finger followed by a basic region structurally related to the NAC domain. No visible phenotype. Voz1 and voz2 double mutant displays a late flowering phenotype under long-day conditions.