Spatial control of Rho (Rac-Rop) signaling in tip-growing plant cells

Journal article

Publication Details

Author(s): Kost B
Journal: Trends in Cell Biology
Publisher: Elsevier (Cell Press)
Publication year: 2008
Volume: 18
Journal issue: 3
Pages range: 119-127
ISSN: 0962-8924


Spatially restricted signaling by Rho GTPases is essential for the polarization of eukaryotic cells, which is required for the morphogenesis, mobility and division of single cells, and for the development of multicellular organisms. Rac-Rop GTPases, which constitute a plant-specific Rho GTPase subfamily, accumulate at the apical plasma membrane of pollen tubes and root hairs, where they control rapid polar cell expansion by a process known as tip growth. Here, recent insights into the spatial control of Rac-Rop-dependent signaling in tip-growing plant cells by regulatory proteins (i.e. Rho GTPase-activating proteins, Rho guanine nucleotide dissociation inhibitors, Rho guanine nucleotide-exchange factors and phosphoinositide-specific phospholipase C) and lipids [phosphatidylinositol (4,5)-bisphosphate and diacyl glycerol] are summarized. A model is presented, which integrates the current knowledge concerning the molecular mechanisms that maintain the polarization of Rho signaling in plant cells.

External institutions with authors

University of Warwick

How to cite

Kost, B. (2008). Spatial control of Rho (Rac-Rop) signaling in tip-growing plant cells. Trends in Cell Biology, 18(3), 119-127.

Kost, Benedikt. "Spatial control of Rho (Rac-Rop) signaling in tip-growing plant cells." Trends in Cell Biology 18.3 (2008): 119-127.


Last updated on 2018-08-08 at 16:10