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This review discusses the role of reactive oxygen species in regulating oscillating apoplastic pH gradients and growth in plant root hairs and pollen tubes, reporting no new experimental results.

This study found that CNGC 6, CNGC 9, and CNGC 14 are crucial for maintaining calcium oscillations necessary for normal root hair growth in plants, with mutations leading to defects like swelling and bursting.

AGD1 is important for root hair development in Arabidopsis, working with phosphoinositide signaling and the actin cytoskeleton.

This study observed that root hair growth in Arabidopsis occurs episodically, with each growth period associated with external alkalization and internal acidification, suggesting a role for proton influx in facilitating polar growth.

This study found that auxin regulates reactive oxygen species-mediated root hair growth by activating transcription factors and enzymes that affect cell elongation.