NPQ activation reduces chlorophyll triplet state formation in the moss Physcomitrella patens

► A measure of Chlorophyll and Carotenoid triplets upon NPQ induction is presented. ► All the PSII components undergo a decrease on triplet yield upon NPQ activation. ► The reduction on Chl triplet yield is reversible and correlated to qE. ► The structural rearrangements following NPQ do not lead to new triplet populations.