Sci. Signal., 4 March 2008
Cell Biology Explaining Polarized Growth Patterns
Stella M. Hurtley
Science, AAAS, Cambridge CB2 1LQ, UK
The ability of certain cells to grow in a polarized fashion has been studied for many years, but the mechanisms involved in the process, particularly in plant cell systems, remain unclear. Takeda et al. report the discovery of a positive feedback mechanism that regulates the development of a polarized cell shape in the commonly studied model plant Arabidopsis thaliana. The positive feedback system is generated by the local interaction of Ca2+ and reactive oxygen species in root hair cells and is central to the maintenance of active growth at spatially restricted sites during polarized cell elongation.
Citation: S. M. Hurtley, Explaining Polarized Growth Patterns. Sci. Signal. 1, ec86 (2008).
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