The type B phosphatidylinositol-4-phosphate 5-kinase 3 is essential for root hair formation in Arabidopsis thaliana.

@article{Stenzel2008TheTB,
  title={The type B phosphatidylinositol-4-phosphate 5-kinase 3 is essential for root hair formation in Arabidopsis thaliana.},
  author={Irene Stenzel and Till Ischebeck and Sabine Koenig and Anna Hołubowska and Marta Sporysz and Bettina Hause and Ingo Heilmann},
  journal={The Plant cell},
  year={2008},
  volume={20 1},
  pages={124-41}
}
Root hairs are extensions of root epidermal cells and a model system for directional tip growth of plant cells. A previously uncharacterized Arabidopsis thaliana phosphatidylinositol-4-phosphate 5-kinase gene (PIP5K3) was identified and found to be expressed in the root cortex, epidermal cells, and root hairs. Recombinant PIP5K3 protein was catalytically active and converted phosphatidylinositol-4-phosphate to phosphatidylinositol-4,5-bisphosphate [PtdIns(4,5)P2]. Arabidopsis mutant plants… CONTINUE READING

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