article published yes Xu Chen author 4E5ADCAA-F248-11E8-B48F-1D18A9856A87 Jirí Friml author 4159519E-F248-11E8-B48F-1D18A9856A870000-0002-8302-7596 JiFr department Polarity and subcellular dynamics in plants project ROPs (Rho of plants) belong to a large family of plant-specific Rho-like small GTPases that function as essential molecular switches to control diverse cellular processes including cytoskeleton organization, cell polarization, cytokinesis, cell differentiation and vesicle trafficking. Although the machineries of vesicle trafficking and cell polarity in plants have been individually well addressed, how ROPs co-ordinate those processes is still largely unclear. Recent progress has been made towards an understanding of the coordination of ROP signalling and trafficking of PIN (PINFORMED) transporters for the plant hormone auxin in both root and leaf pavement cells. PIN transporters constantly shuttle between the endosomal compartments and the polar plasma membrane domains, therefore the modulation of PIN-dependent auxin transport between cells is a main developmental output of ROP-regulated vesicle trafficking. The present review focuses on these cellular mechanisms, especially the integration of ROP-based vesicle trafficking and plant cell polarity. Portland Press2014 eng 0300-5127 1470-8752 24450654 00033344440003410.1042/BST20130269 421212 - 218 X. Chen, J. Friml, Biochemical Society Transactions 42 (2014) 212–218. Chen X, Friml J. Rho-GTPase-regulated vesicle trafficking in plant cell polarity. <i>Biochemical Society Transactions</i>. 2014;42(1):212-218. doi:<a href="https://doi.org/10.1042/BST20130269">10.1042/BST20130269</a> Chen, X., &#38; Friml, J. (2014). Rho-GTPase-regulated vesicle trafficking in plant cell polarity. <i>Biochemical Society Transactions</i>. Portland Press. <a href="https://doi.org/10.1042/BST20130269">https://doi.org/10.1042/BST20130269</a> Chen, Xu, and Jiří Friml. “Rho-GTPase-Regulated Vesicle Trafficking in Plant Cell Polarity.” <i>Biochemical Society Transactions</i>. Portland Press, 2014. <a href="https://doi.org/10.1042/BST20130269">https://doi.org/10.1042/BST20130269</a>. Chen X, Friml J. 2014. Rho-GTPase-regulated vesicle trafficking in plant cell polarity. Biochemical Society Transactions. 42(1), 212–218. X. Chen and J. Friml, “Rho-GTPase-regulated vesicle trafficking in plant cell polarity,” <i>Biochemical Society Transactions</i>, vol. 42, no. 1. Portland Press, pp. 212–218, 2014. Chen, Xu, and Jiří Friml. “Rho-GTPase-Regulated Vesicle Trafficking in Plant Cell Polarity.” <i>Biochemical Society Transactions</i>, vol. 42, no. 1, Portland Press, 2014, pp. 212–18, doi:<a href="https://doi.org/10.1042/BST20130269">10.1042/BST20130269</a>. 19152018-12-11T11:54:41Z2025-09-29T12:22:54Z