Feraru, Elena ; Feraru, Mugurel I ; Kleine-Vehn, Jürgen ; Martinière, Alexandre ; Mouille, Grégory ; Vanneste, Steffen ; Vernhettes, Samantha ; Runions, John ; Friml, JiríIST Austria
A central question in developmental biology concerns the mechanism of generation and maintenance of cell polarity, because these processes are essential for many cellular functions and multicellular development . In plants, cell polarity has an additional role in mediating directional transport of the plant hormone auxin that is crucial for multiple developmental processes [2-4]. In addition, plant cells have a complex extracellular matrix, the cell wall [5, 6], whose role in regulating cellular processes, including cell polarity, is unexplored. We have found that polar distribution of PIN auxin transporters  in plant cells is maintained by connections between polar domains at the plasma membrane and the cell wall. Genetic and pharmacological interference with cellulose, the major component of the cell wall, or mechanical interference with the cell wall disrupts these connections and leads to increased lateral diffusion and loss of polar distribution of PIN transporters for the phytohormone auxin. Our results reveal a plant-specific mechanism for cell polarity maintenance and provide a conceptual framework for modulating cell polarity and plant development via endogenous and environmental manipulations of the cellulose-based extracellular matrix.
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Feraru E, Feraru M, Kleine Vehn J, et al. PIN polarity maintenance by the cell wall in Arabidopsis. Current Biology. 2011;21(4):338-343. doi:10.1016/j.cub.2011.01.036
Feraru, E., Feraru, M., Kleine Vehn, J., Martinière, A., Mouille, G., Vanneste, S., … Friml, J. (2011). PIN polarity maintenance by the cell wall in Arabidopsis. Current Biology, 21(4), 338–343. https://doi.org/10.1016/j.cub.2011.01.036
Feraru, Elena, Mugurel Feraru, Jürgen Kleine Vehn, Alexandre Martinière, Grégory Mouille, Steffen Vanneste, Samantha Vernhettes, John Runions, and Jirí Friml. “PIN Polarity Maintenance by the Cell Wall in Arabidopsis.” Current Biology 21, no. 4 (2011): 338–43. https://doi.org/10.1016/j.cub.2011.01.036.
E. Feraru et al., “PIN polarity maintenance by the cell wall in Arabidopsis,” Current Biology, vol. 21, no. 4, pp. 338–343, 2011.
Feraru E, Feraru M, Kleine Vehn J, Martinière A, Mouille G, Vanneste S, Vernhettes S, Runions J, Friml J. 2011. PIN polarity maintenance by the cell wall in Arabidopsis. Current Biology. 21(4), 338–343.
Feraru, Elena, et al. “PIN Polarity Maintenance by the Cell Wall in Arabidopsis.” Current Biology, vol. 21, no. 4, Cell Press, 2011, pp. 338–43, doi:10.1016/j.cub.2011.01.036.