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Auxin carriers in Cucurbita vesicles : II. Evidence that carrier-mediated routes of both indole-3-acetic acid influx and efflux are electroimpelled


Planta 171(4): 507-513
Auxin carriers in Cucurbita vesicles : II. Evidence that carrier-mediated routes of both indole-3-acetic acid influx and efflux are electroimpelled
The association at 0 degrees C of IAA with membrane vesicles prepared from C. pepo hypocotyls at pH 7.9 and resuspended at pH 6.0 was greatly diminished by osmotic shrinkage. Nonradioactive IAA inhibited a large proportion of this association thus revealing a saturable component, also decreased by osmotic shrinkage, which mainly represents operation of an auxin uptake carrier, with saturable binding having only a minor role.

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Accession: 001534131

PMID: 24225713

DOI: 10.1007/BF00392299



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