atranorin

The accumulation of the protective pigment parietin in Xanthoria parietina is induced specifically by UV-B radiation [124], while in Cladonia uncialis and Cladina rangiferina only UV-A radiation had a stimulating effect on the accumulation of usnic acid and atranorin, respectively.

General characteristics of arctic species and their adaptations in the context of changes in climate and ultraviolet-B radiation levels 2009