Determination of Auxin-Dependent pH Changes in Coleoptile Cell Walls by a Null-Point Method.

@article{Schopfer1993DeterminationOA,
  title={Determination of Auxin-Dependent pH Changes in Coleoptile Cell Walls by a Null-Point Method.},
  author={Peter Schopfer},
  journal={Plant physiology},
  year={1993},
  volume={103 2},
  pages={351-357}
}
The present debate on the validity of the "acid-growth theory" of auxin (indole-3-acetic acid, IAA) action concentrates on the question of whether IAA-induced proton excretion into the cell wall is quantitatively sufficient to provide the shift in pH that is required to explain IAA-induced growth (see D.L. Rayle, R.E. Cleland [1992] Plant Physiol 99:1271-1274 for a recent apologetic review of the acid-growth theory). In the present paper a null-point method has been employed for determining the… CONTINUE READING