Root hair growth: it's a one way street.
Over the last few decades, our understanding of directed cell growth in different organisms has substantially improved. Tip-growing cells in plants elongate rapidly via targeted deposition of cell wall and membrane material at the cell apex, and use turgor pressure as a driving force for expansion. This type of polar growth requires a high degree of coordination between a plethora of cellular and extracellular components and compounds, including calcium dynamics, apoplastic reactive oxygen species and pH, the cytoskeleton, and vesicular trafficking. In this review, we attempt to outline and summarize the factors that control root hair growth and how they work together as a team.
Max-Planck Institute for Molecular Plant Physiology Am Muehlenberg 1, 14476 Potsdam Germany.
Amelie
A
Mendrinna
Max-Planck Institute for Molecular Plant Physiology Am Muehlenberg 1, 14476 Potsdam Germany ; ARC Centre of Excellence in Plant Cell Walls, School of Botany, University of Melbourne Parkville 3010, Victoria Australia.
Staffan
S
Persson