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Root Hairs pp 171-189 | Cite as

Phospholipid Signaling in Root Hair Development

  • T. AoyamaEmail author
Part of the Plant Cell Monographs book series (CELLMONO, volume 12)

Abstract

Phospholipids, which are major components of the eukaryotic plasma membrane, play crucial roles in signal transduction, leading to not only total cellular responses via transcriptional regulation but also localized intracellular events such as membrane traffic and cytoskeletal reorganization, both of which underlie polarized cell morphogenesis. Although studies of phospholipid signaling have focused mainly on animals and fungi, evidence for its involvement in plant cell morphogenesis has also been accumulating. Because phospholipids function as site-specific signals on membranes, they likely play pivotal roles in localizing exocytosis and the fine F-actin configuration to regions of cell expansion, such as the tips of growing root hairs. In this chapter, evidence for the involvement of phospholipids in the regulation of root hair tip growth is described, with an emphasis on major signaling phospholipids, phosphoinositides and phosphatidic acid; in addition, a model signal transduction network for root hair tip growth, involving phospholipids, their metabolic enzymes, and their effector proteins is proposed.

Keywords

Pollen Tube Root Hair Phosphatidic Acid Small GTPases Cytoskeletal Reorganization 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Institute for Chemical ResearchKyoto UniversityUjiJapan

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