May encode a transcription factor involved in the elaboration of shoot apical meristems (SAM) (Probable). Together with NAC056/NARS1, regulates embryogenesis by regulating the development and degeneration of ovule integuments, a process required for intertissue communication between the embryo and the maternal integument (PubMed:18849494). Restricted primarily to the region of the embryo including the SAM (PubMed:12175016). Expressed in the outer integument, but seems not expressed in the embryo at the torpedo stage (PubMed:18849494). The NAC domain includes a DNA binding domain and a dimerization domain. When associated with disruption in NAC056/NARS1, abnormally shaped seeds, defect in embryogenesis arrested at the torpedo-shaped embryo stage, markedly delayed integuments degeneration, and delay of silique senescence.