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Related Experiment Video

Updated: Jul 19, 2026

Axon Stretch Growth: The Mechanotransduction of Neuronal Growth

Axon Stretch Growth: The Mechanotransduction of Neuronal Growth

Published on: August 10, 2011

Polarized growth: maintaining focus on the tip.

Rex A Cole¹, John E Fowler

¹Molecular and Cellular Biology Program, Oregon State University, Corvallis, Oregon 97331, USA.

Current Opinion in Plant Biology

|October 3, 2006

Summary

Plant tip growth in pollen tubes and root hairs relies on calcium gradients, actin, and vesicle transport. A newly identified network, the tip growth LENS, coordinates these elements for sustained cell expansion.

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Rapid and Robust Analysis of Cellular and Molecular Polarization Induced by Chemokine Signaling

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Published on: December 12, 2014

Area of Science:

Plant cell biology
Cellular growth mechanisms

Background:

Tip growth, a specialized cell expansion, occurs in pollen tubes and root hairs.
Key components include calcium gradients, actin cytoskeleton, and vesicle trafficking.
Emerging parallels involve ROP/Rab GTPase signaling, phosphoinositides, CDPKs, and the exocyst.

Purpose of the Study:

To elucidate the interconnected pathways regulating tip growth.
To introduce and define the tip growth LENS (localization enhancing network, self-sustaining) model.

Main Methods:

Comparative analysis of molecular mechanisms in pollen tube and root hair tip growth.
Integration of known signaling pathways and cellular components.

Main Results:

Identified conserved signaling pathways and molecular players in tip growth.
Demonstrated the interconnectedness of cellular components essential for tip growth.
Proposed the tip growth LENS as a coordinating network.

Conclusions:

The tip growth LENS integrates multiple cellular activities for regulated cell expansion.
This network ensures self-sustainability and coordination during tip advance.
Understanding the LENS provides insights into fundamental plant cell growth processes.