Transcription regulator that may be involved in the control of the pre-rRNA processing machinery. Can rescue the phenotypes of slow growth and defective rRNA processing in the yeast fhl1 null mutant (PubMed:12149245). Shows transactivation activity in yeast (PubMed:23192389). Expressed in roots, stems, leaves, young flower buds and open flowers. Down-regulated in germinating seeds between 3 and 5 days after germination. Down-regulated in flowers from 5 days after pollination.