Work

Theoretical Analyses of Turgor Pressure and Expansive Growth Rate of Plant Cells During Water Deficit

Year: 2025

Type: article

Abstract: Expansive plant growth during water deficit is common in temperate and extreme climates. Understanding how the turgor pressure, P, behaves during water deficit is essential for a better understanding of expansive growth rate, v. Here, validated biophysical equations together with dimensional analyses are used to simulate water deficit and determine the behavior of P and v. A dimensionless number, Πpw, helps simplify the biophysical equations and interpret the results. The magnitude of Πpw increases as water deficit severity increases. Analyses reveal that both P and v decrease curvilinearly as Πpw increases. Simple mathematical relationships between P, v, and Πpw, are derived, providing a clear and quantitative understanding of how P and v change as water deficits become more severe. Additionally, it is shown how the results of these analyses can be used to assess P and v of roots growing in water deficit.

Source: Plants

DOI: 10.3390/plants14223538

Author: Joseph K. E. Ortega

Institution: University of Colorado Denver

Language: English

Topic: Plant Water Relations and Carbon Dynamics

Subfield: Global and Planetary Change

Field: Environmental Science

Domain: Physical Sciences

SDG: Zero hunger

Open Access status: gold

Estimated APC paid: $3,258