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Related Concept Videos

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Related Experiment Video

Updated: Jun 2, 2026

Live Imaging of Arabidopsis Pollen Tube Reception and Double Fertilization Using the Semi-In Vitro Cum Septum Method
06:45

Live Imaging of Arabidopsis Pollen Tube Reception and Double Fertilization Using the Semi-In Vitro Cum Septum Method

Published on: February 24, 2023

Pollen tubes and the physical world.

Lawrence J Winship1, Gerhard Obermeyer, Anja Geitmann

  • 1Hampshire College, School of Natural Science, Amherst, MA 01002, USA. ljwNS@hampshire.edu

Trends in Plant Science
|May 4, 2011
PubMed
Summary
This summary is machine-generated.

Pollen tube growth is governed by physical laws, not active cellular processes. New evidence supports the model that passive water movement and scalar pressure drive pollen tube expansion.

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Published on: May 22, 2018

Area of Science:

  • Plant Biology
  • Biophysics

Background:

  • Pollen tube growth models were previously compared on theoretical and biophysical grounds.
  • The central thesis posits that growth mechanisms evolved within physical constraints.

Purpose of the Study:

  • To respond to critiques regarding turgor pressure and pollen tube growth.
  • To evaluate models of pollen tube growth in light of new evidence.

Main Methods:

  • Theoretical analysis of physical principles governing cell growth.
  • Review of experimental data on pollen tube growth rates and turgor pressure.

Main Results:

  • Pressure is a scalar quantity, not a vector.
  • Water movement driving pressure is passive, regulated by water potential differences.

Conclusions:

  • The biophysical model of pollen tube growth, emphasizing passive water movement and scalar pressure, is consistent with new evidence.
  • This framework provides a robust understanding of pollen tube elongation.