Abstract
The effect of auxin on membrane-bound ATPase activity was studied in a plasma membrane-enriched fraction from zucchini hypocotyls. The apparent KM of ATPase activity for ATP was decreased in the presence of 10-6 M auxin so that at very low ATP concentrations the stimulation of ATPase activity was most obvious. The weak auxin analogue, 2,3-dichlorophenoxyacetic acid, stimulated much less than the active auxin 2,4-dichlorophenoxyacetic acid.
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Scherer, G.F.E. Stimulation of ATPase activity by auxin is dependent on ATP concentration. Planta 161, 394–397 (1984). https://doi.org/10.1007/BF00394568
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DOI: https://doi.org/10.1007/BF00394568