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MAINTAINING APICAL MORPHOLOGY

Expand, colonize and consolidate

Plant nutrient-uptake involves the growth and maintenance of viable root hairs that are flexible but resistant to soil hardening, water content variability and pathogen attack. A role for phosphoinositides establishing polarity and structural hardening of the cell wall is now defined, linking lipid signalling and membrane trafficking to cellular morphology.

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Correspondence to Rui Malhó.

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Fig. 1: Apical and shank region of a growing root hair, depicting the main signalling transduction pathways and their components.