Transcription factor of the NAC family associated with male fertility. Involved in anther development, but not in senescence. Reduced expression of NAC5 via RNAi leads to male-sterility. Highest expression in stamens. Expressed in leaves. Up-regulated during anther and flower development and leaf senescence. Up-regulated by drought, salt and cold treatments. The NAC domain includes a DNA binding domain and a dimerization domain.