Potassium carrier TRH1 is required for auxin transport in Arabidopsis roots.

@article{VicenteAgull2004PotassiumCT,
  title={Potassium carrier TRH1 is required for auxin transport in Arabidopsis roots.},
  author={Francisco Vicente-Agull{\'o} and Stamatis Rigas and Guilhem G Desbrosses and Liam Dolan and Polydefkis Hatzopoulos and Alexander Grabov},
  journal={The Plant journal : for cell and molecular biology},
  year={2004},
  volume={40 4},
  pages={523-35}
}
Disruption of the TRH1 potassium transporter impairs root hair development in Arabidopsis, and also affects root gravitropic behaviour. Rescue of these morphological defects by exogenous auxin indicates a link between TRH1 activity and auxin transport. In agreement with this hypothesis, the rate of auxin translocation from shoots to roots and efflux of [3H]IAA in isolated root segments were reduced in the trh1 mutant, but efflux of radiolabelled auxin was accelerated in yeast cells transformed… CONTINUE READING

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