Probable transcription factor. May be required for spikelet (rice flower) development (PubMed:15682279). Transcription factor that functions to support the MADS55 in its function as negative regulator of brassinosteroid signaling (PubMed:18182025). Expressed in palea and stamen primordia (PubMed:15682279). Expressed in shoots and coleoptiles (PubMed:18182025). Expressed in the L1 cell layer of the embryo 2 days after pollination. No visible phenotype under normal growth conditions. Plants over-expressing MADS22 produce shortened panicles and stems.