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Plant NAC domain proteins are one of the largest groups of plant-specific transcriptional factors and play crucial roles in plant growth, development and stress responses.We isolated a novel peanut NAC gene, named as AhNAC4, from a cDNA library of peanut immature seeds.AhNAC4 protein had a conserved NAC domain in the N-terminus and showed high similarity to other NACs, especially ATAF subgroup members.