Probable transcription factor. May be involved in the control of flowering time. May interact with the K-box of MADS1 and MADS6. Highly expressed in sterile lemmas, at intermediate levels in stamens, and weakly in lemmas, paleas and carpels. Expressed at early stage of flower development in the spikelet (rice flower) apical meristem and later in developing stamens, pistil primordia and differentiated anthers.