Photosynthetic quantum efficiency (conversion of absorbed photons to transported electrons)

Range 0-0.83 Electrons transported/photon
Organism Biosphere
Reference Schurr U, Walter A, Rascher U. Functional dynamics of plant growth and photosynthesis from steady-state to dynamics from homogeneity to heterogeneity. Plant Cell Environ. 2006 Mar29(3):340-52.PubMed ID17080590
Primary Source 1) Björkman O. & Demmig B. (1987) Photon yield of O2 evolution and chlorophyll fluorescence characteristics at 77K among vascular plants of diverse origins. Planta 170, 489–504. (2) Rascher U., Liebig M. & Lüttge U. (2000) Evaluation of instant light-response curves of chlorophyll-fluorescence parameters obtained with a portable chlorophyll fluorometer on site in the field. Plant, Cell and Environment 23, 1397–1405.
Comments Efficiency of light reaction is commonly measured using chlorophyll fluorescence techniques or oxygen evolution and denoted photosynthetic ‘quantum efficiency’ (also ? F/ F m ' using fluorescence terminology), which quantifies the conversion of absorbed photons to transported electrons. Quantum efficiency of photosynthesis varies between 0.83 and close to zero at leaves of dark-adapted higher plants and depends primarily on light intensity (Björkman & Demmig 1987 Rascher, Liebig & Lüttge 2000). See BNID 105037
Entered by Uri M
ID 104649