Journal article

Kinetics of Rubisco activation as determined from gas-exchange measurements in antisense plants of Arabidopsis thaliana containing reduced levels of Rubisco activase

KA Mott, GW Snyder, IE Woodrow

Functional Plant Biology | Published : 1997

Abstract

The kinetics of the increase in photosynthesis rate following an increase in PFD were determined in wildtype Arabidopsis thaliana plants and in two antisense plants that contained reduced levels of Rubisco activase. Experiments were conducted over a range of intercellular CO2 mole fractions (ci). The rate at which photosynthesis approached steady-state following an increase in PFD was similar for wildtype and transformed plants at low values of ci. At higher values of ci, however, wildtype plants approached steady state more rapidly than did the antisense plants. Photosynthesis time courses were used to calculate Rubisco activation rates for the three types of plants, and Rubisco activation ..

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