Transcriptional repressor that regulates multiple aspects of plant growth and development through the regulation of BEL1-LIKE (BLH) and KNOX TALE (KNAT) homeodomain transcription factors. Required for embryo development. Interacts with BLH1, BLH2, BLH3, BLH4, BLH6 and BLH10. Expressed in roots, rosette and cauline leaves, and flower buds. Embryonic lethality when homozygous. Plants over-expressing OFP5 show kidney-shaped cotyledons, round and curled leaves, small rosette size, late flowering, reduced fertilization and round seeds. Truncated N-terminus. Truncated N-terminus.