How far can a molecule of weak acid travel in the apoplast or xylem?

@article{Kramer2006HowFC,
  title={How far can a molecule of weak acid travel in the apoplast or xylem?},
  author={Eric M. Kramer},
  journal={Plant physiology},
  year={2006},
  volume={141 4},
  pages={1233-6}
}
The plant hormones auxin, abscisic acid (ABA), and the gibberellins (GAs) are all weak acids subject to the ion-trapping mechanism that tends to remove them from the extracellular space and concentrate them in the cytoplasm of plant cells. If a molecule of one of these compounds enters the extracellular space, it can therefore travel only a limited distance before reentering a cell. Influx carriers can only shorten this distance. Here I present a simple but quantitative estimate of this… CONTINUE READING

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Dissociation constants of the gibberellins

  • S Yamaguchi, Y Kamiya, T Sun
  • 2001
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