Transcription factor involved in the regulation of seed size (PubMed:27872632). Possesses transactivation activity in yeast (PubMed:27872632). Forms heterodimers with NAC26. Expressed in stems and panicles (PubMed:16896793). Expressed in developing seeds (PubMed:27872632). The NAC domain includes a DNA binding domain and a dimerization domain.