Photocontrol of Mimosa pudica L. leaf movement.

1. Mimosa pudica L. pinnae close in darkness when phytochrome is predominantly in the far-red-absorbing form (Pfr) and remain open when Pfr is low [6].

Leaflet movement of Mimosa pudica L. Indicative of phytochrome action.

1. Closing movements of Mimosa pudica pinnae, upon change from light to darkness, depend upon the presence of phytochrome in the far-red-absorbing form. 2.