Transcription factor involved in the regulation of seed size (By similarity). Binds to DNA-specific sequences of CLPD1 and OAT promoters in vitro (PubMed:18813954). Forms heterodimers with NAC26. Expressed in stems and panicles (PubMed:16896793). Expressed in developing endosperm (PubMed:18813954). The NAC domain includes a DNA binding domain and a dimerization domain.