On the exceptional gauged WZW theories

We consider two different versions of gauged WZW theories with the exceptio nal groups and gauged with any of their null subgroups. By constructing sui table automorphism, we establish the equivalence of these two theories. On the other hand our automorphism, relates the two dual irreducible Riemannia n globally symmetric spaces with different characters based on the correspo nding exceptional Lie groups.