Regulation of ADPGlucose Synthesis in Guard Cells of Commelina communis
- 1 November 1983
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 73 (3), 862-864
- https://doi.org/10.1104/pp.73.3.862
Abstract
The activator specificity of the ADPglucose pyrophosphorylase from Commelina communis guard cells is the same as observed for the mesophyll cell enzyme. 3-Phosphoglycerate was found to be the most effective activator. Fifty per cent of maximal stimulation was observed at about 100 micromolar. Inorganic phosphate was found to be a potent inhibitor giving 50% inhibition at 0.3 millimolar. These results are discussed with respect to regulation of starch synthesis in guard cells.Keywords
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