May play a role in the apical hook development (Ref.6). Primarily localized in the nucleus. Expressed in roots, leaves and stems. During seedling growth expressed on the inner side of apical hook. No visible phenotype under normal growth conditions. Seedlings over-expressing SAUR32 display reduced hypocotyl elongation and are defective in apical hook maintenance when grown in the dark. Belongs to the ARG7 family.