Encodes a member of the AP2/EREBP transcription factor family that has only one AP2 domain. It is a positive regulator of disease defense that functions upstream of SA accumulation.
The Arabidopsis thaliana At4g13040 gene, a unique member of the AP2/EREBP family, is a positive regulator for salicylic acid accumulation and basal defense against bacterial pathogens.
At4g13040 (referred herein as Apetala 2 family protein involved in SA mediated disease defense 1 - APD1) is a positive regulator of disease defense that functions upstream of salicylic acid (SA) accumulation.