Transcriptional regulator required for the maintenance of the plant vegetative phase. In association with CHR11 or CHR17 may prevent the early activation of the vegetative-to-reproductive transition by regulating key genes that contribute to flower timing, such as FT, SEP1, SEP3, AGL8/FUL, SOC1 and FLC (PubMed:22694359). Involved in the transcriptional regulation of seed-specific gene expression (PubMed:23872538). Interacts with CHR11 (PubMed:22694359). Interacts (via the DDT domain) with CHR11 (via C-terminus) (PubMed:23691993). A number of isoforms are produced. According to EST sequences. Highly expressed in growing tissues such as inflorescence and flower meristems, young leaves and floral organs. Expressed in roots, rosette and cauline leaves, stems, flowers, inflorescences and siliques. No visible phenotype under normal growth conditions, but the double mutant plants rlt-1 and rlt2-1 are small and display early flowering. Truncated N-terminus.