Abstract
The signal perceotion of auxin was investigated by in vitro binding assays using both microsomal and purified plasma membrane preparations obtained from auxin-dependent carrot suspension cultures at the logarithmic growth phase. All the results presented point to the occurrence of an IAA-influx, but not to an auxin receptor, at the plant plasma membrane. Furthermore it is assumed that the activity of the IAA-influx carrier is regylated by a GTP-binding protein. At take the physicochemical properties of IAA into considertion the experimental findings will be discussed in order to suggest that the IAA-influ carrier at the plasmalemma is the site responsible for signal perception and transduction of auxin by plant cells.
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© 1996 Kluwer Academic Publishers
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Zbell, B. (1996). The IAA-influx carrier at the plasmalemma: Properties, regulation, and function in auxin transduction. In: Smith, A.R., et al. Plant Hormone Signal Perception and Transduction. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0131-5_8
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DOI: https://doi.org/10.1007/978-94-009-0131-5_8
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6546-7
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