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Biophysical Equations and Pressure Probe Experiments to Determine Altered Growth Processes after Changes in

Joseph K E Ortega¹

¹Department of Mechanical Engineering, University of Colorado Denver, Denver, CO 80217-3364, USA.

Plants (Basel, Switzerland)

|February 15, 2022

Summary

This study presents a novel iterative method combining biophysical equations and pressure probe experiments to precisely quantify changes in plant expansive growth. The approach accurately identifies altered biophysical processes, their magnitude, and contribution to growth rate variations.

Keywords:

augmented growth equations dimensionless numbers fungal growth response plant growth response pressure probe Π parameters

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Area of Science:

Plant biology
Biophysics
Cellular processes

Background:

Expansive growth is crucial for plant development, morphogenesis, and responses to environmental stimuli.
Walled cells and plant tissues exhibit expansive growth governed by water uptake, wall deformation, and turgor pressure.

Purpose of the Study:

To present a systematic iterative method for analyzing expansive growth.
To determine altered biophysical processes underlying changes in growth rate.
To validate biophysical equations with pressure probe experiments.

Main Methods:

Developed an iterative scheme combining biophysical equations and pressure probe experiments.
Applied the scheme to analyze four cases: environmental changes, developmental changes, and mutations.
Utilized dimensionless numbers to quantify the magnitude of changes in biophysical processes.

Main Results:

The iterative scheme successfully identified specific biophysical processes that were altered.
The method quantified the magnitude of these changes and their impact on expansive growth rate.
Demonstrated the ability to distinguish between environmental, developmental, and mutational effects on growth.

Conclusions:

The presented iterative scheme provides a robust framework for dissecting the biophysical underpinnings of expansive growth.
This approach allows for precise identification and quantification of alterations in water uptake, wall mechanics, and turgor pressure.
Offers insights into the biological implications of biophysical variables in growth regulation.