The thylakoid membrane in land plants is organized into an appressed domain (grana), enriched in photosystem (PS) II, and a non-appressed domain (stroma lamellae) enriched in PSI. This ultrastructure ensures control over excitons spillover from PSII to PSI. The bulky machinery required for the repai...
ORGANISM(S): Arabidopsis thaliana (Mouse-ear cress)