Transcription activator involved in xylem formation (PubMed:25265867, PubMed:25535195). Promotes the expression of the secondary wall-associated transcription factor MYB46 (PubMed:25265867). Functions upstream of NAC030/VND7, a master switch of xylem vessel differentiation (PubMed:25265867, PubMed:25535195). Acts as upstream regulator of NAC101/VND6 and LBD30/ASL19 (PubMed:25535195). Expressed in the vascular cylinder of roots. Expressed in the differentiation zone of the root stele. The NAC domain includes a DNA binding domain and a dimerization domain. Overexpression of NAC075 induces the formation of ectopic xylem vessel-like elements.