Bipolar plasma membrane distribution of phosphoinositides and their requirement for auxin-mediated cell polarity and patterning in Arabidopsis

R. Tejos, M. Sauer, S. Vanneste, M. Palacios-Gomez, H. Li, M. Heilmann, R. Van Wijk, J. Vermeer, I. Heilmann, T. Munnik, J. Friml, Plant Cell 26 (2014) 2114–2128.


Journal Article | Published | English
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Abstract
Cell polarity manifested by asymmetric distribution of cargoes, such as receptors and transporters, within the plasma membrane (PM) is crucial for essential functions in multicellular organisms. In plants, cell polarity (re)establishment is intimately linked to patterning processes. Despite the importance of cell polarity, its underlying mechanisms are still largely unknown, including the definition and distinctiveness of the polar domains within the PM. Here, we show in Arabidopsis thaliana that the signaling membrane components, the phosphoinositides phosphatidylinositol 4-phosphate (PtdIns4P) and phosphatidylinositol 4, 5-bisphosphate [PtdIns(4, 5)P2] as well as PtdIns4P 5-kinases mediating their interconversion, are specifically enriched at apical and basal polar plasma membrane domains. The PtdIns4P 5-kinases PIP5K1 and PIP5K2 are redundantly required for polar localization of specifically apical and basal cargoes, such as PIN-FORMED transporters for the plant hormone auxin. As a consequence of the polarity defects, instructive auxin gradients as well as embryonic and postembryonic patterning are severely compromised. Furthermore, auxin itself regulates PIP5K transcription and PtdIns4P and PtdIns(4, 5)P2 levels, in particular their association with polar PM domains. Our results provide insight into the polar domain-delineating mechanisms in plant cells that depend on apical and basal distribution of membrane lipids and are essential for embryonic and postembryonic patterning.
Publishing Year
Date Published
2014-05-01
Journal Title
Plant Cell
Acknowledgement
This work was supported by grants from the Odysseus program of the Research Foundation-Flanders (to J.F.).
Volume
26
Issue
5
Page
2114 - 2128
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Cite this

Tejos R, Sauer M, Vanneste S, et al. Bipolar plasma membrane distribution of phosphoinositides and their requirement for auxin-mediated cell polarity and patterning in Arabidopsis. Plant Cell. 2014;26(5):2114-2128. doi:10.1105/tpc.114.126185
Tejos, R., Sauer, M., Vanneste, S., Palacios-Gomez, M., Li, H., Heilmann, M., … Friml, J. (2014). Bipolar plasma membrane distribution of phosphoinositides and their requirement for auxin-mediated cell polarity and patterning in Arabidopsis. Plant Cell, 26(5), 2114–2128. https://doi.org/10.1105/tpc.114.126185
Tejos, Ricardo, Michael Sauer, Steffen Vanneste, MiriamPalacios Palacios-Gomez, Hongjiang Li, Mareike Heilmann, Ringo Van Wijk, et al. “Bipolar Plasma Membrane Distribution of Phosphoinositides and Their Requirement for Auxin-Mediated Cell Polarity and Patterning in Arabidopsis.” Plant Cell 26, no. 5 (2014): 2114–28. https://doi.org/10.1105/tpc.114.126185.
R. Tejos et al., “Bipolar plasma membrane distribution of phosphoinositides and their requirement for auxin-mediated cell polarity and patterning in Arabidopsis,” Plant Cell, vol. 26, no. 5, pp. 2114–2128, 2014.
Tejos R, Sauer M, Vanneste S, Palacios-Gomez M, Li H, Heilmann M, Van Wijk R, Vermeer J, Heilmann I, Munnik T, Friml J. 2014. Bipolar plasma membrane distribution of phosphoinositides and their requirement for auxin-mediated cell polarity and patterning in Arabidopsis. Plant Cell. 26(5), 2114–2128.
Tejos, Ricardo, et al. “Bipolar Plasma Membrane Distribution of Phosphoinositides and Their Requirement for Auxin-Mediated Cell Polarity and Patterning in Arabidopsis.” Plant Cell, vol. 26, no. 5, American Society of Plant Biologists, 2014, pp. 2114–28, doi:10.1105/tpc.114.126185.

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