Arabidopsis thaliana Rop GTPases are localized to tips of root hairs and control polar growth.

@article{Molendijk2001ArabidopsisTR,
  title={Arabidopsis thaliana Rop GTPases are localized to tips of root hairs and control polar growth.},
  author={Arthur J. Molendijk and Friedrich Bischoff and C. S. V. Rajendrakumar and Jiřı́ Friml and Markus Braun and Simon Gilroy and Klaus Palme},
  journal={The EMBO journal},
  year={2001},
  volume={20 11},
  pages={2779-88}
}
Plants contain a novel unique subfamily of Rho GTPases, vital components of cellular signalling networks. Here we report a general role for some members of this family in polarized plant growth processes. We show that Arabidopsis AtRop4 and AtRop6 encode functional GTPases with similar intrinsic GTP hydrolysis rates. We localized AtRop proteins in root meristem cells to the cross-wall and cell plate membranes. Polar localization of AtRops in trichoblasts specifies the growth sites for emerging… CONTINUE READING
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