Accumulation of inorganic carbon (Ci) within cell that enables high rates of photosynthesis (even) at low extracellular Ci concentrations

Range 2 to 6 fold that of extracellular concentrations
Organism Microalgae
Reference Hopkinson, B.M., 2014. A chloroplast pump model for the CO2 concentrating mechanism in the diatom Phaeodactylum tricornutum. Photosynthesis research 121, 223-233 p.224 left column top paragraph
Primary Source Burns BD, Beardall J (1987) Utilization of inorganic carbon by marine microalgae. J Exp Mar Biol Ecol 107 :75–86 link AND Colman B, Rotatore C (1995) Photosynthetic inorganic carbon uptake and accumulation in two marine diatoms. Plant Cell Environ 18 :919–924 link
Method Primary source Burns & Beardall (1987) abstract: "Six species of marine microalgae, namely Phaeodactylum tricornutum Bohlin, Dunaliella tertiolecta Butcher, Isochrysis galbana Parke, Porphyridium purpureum (Bory) Ross, Chroomonas sp., and Oscillatoria woronichinii Aniss., have been examined with respect to their gas exchange characteristics and the inorganic carbon species taken up by the cells from the bulk medium." Primary source Colman & Rotatore (1995) abstract: "Some physiological characteristics of photosynthetic inorganic carbon uptake have been examined in the marine diatoms Phaeodactylum tricornutum and Cyclotella sp."
Comments P.224 left column top paragraph: "High rates of photosynthesis, even at low extracellular Ci concentrations, are accomplished with a modest accumulation of Ci within the cell, of 2- to 6-fold that of extracellular concentrations (primary sources)."
Entered by Uri M
ID 116864