NFASC and infection: This result was independently and quantitatively confirmed by real-time RT–PCR (Fig. 5g), indicating that the dominant active form of a DELLA protein expressed in the epidermis is sufficient to spontaneously activate a symbiotic infection pathway related to ENOD11. This suggests that the GA regulation of symbiotic infections and NF signalling depends on the cell autonomous action in the root epidermis of at least MtDELLA1.