Photorespiration and Internal CO(2) Accumulation in Chara corallina as Inferred from the Influence of DIC and O(2) on Photosynthesis.

Abstract

An O(2) electrode system with a specially designed chamber for ;whorl' cell complexes of Chara corallina was used to study the combined effects of inorganic carbon and O(2) concentrations on photosynthetic O(2) evolution. At pH = 5.5 and 20% O(2), cells grown in HCO(3) (-) medium (low CO(2), pH >/= 9.0) exhibited a higher affinity for external CO(2) (K((1/2… (More)

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