Auxin-regulated cell polarity: an inside job?

  title={Auxin-regulated cell polarity: an inside job?},
  author={Eric M. Kramer},
  journal={Trends in plant science},
  volume={14 5},
Auxin is now known to be a key regulator of polar events in plant cells. The mechanism by which auxin conveys a polar signal to the cell is unknown, but one well-known hypothesis is that the auxin flux across the plasma membrane regulates vesicle trafficking. This hypothesis remains controversial because of its reliance on an as-yet-undiscovered membrane flux sensor. In this article I suggest instead that the polar signal is the auxin gradient within the cell cytoplasm. A computer model of… CONTINUE READING

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