Diffuse Growth of Plant Cell Walls

Cosgrove, Daniel J.

doi:10.1104/pp.17.01541

Cited by 276 publications

(271 citation statements)

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“…However, most undifferentiated plant cells are small and uniform. During differentiation, plant cells expand, which occurs when loosening events allow the wall to yield to the existing turgor pressure, discussed further in this issue (Cosgrove, 2018). The momentary decrease in water potential results in an influx of water, causing expansion.…”

mentioning

confidence: 99%

Interplay between Ions, the Cytoskeleton, and Cell Wall Properties during Tip Growth

2017

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mentioning

confidence: 99%

Interplay between Ions, the Cytoskeleton, and Cell Wall Properties during Tip Growth

2017

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“…Prior research demonstrates that the in vivo expansive growth rate requires stress relaxation of the cell wall in order to produce the decrease in turgor pressure that creates the water potential difference necessary to drive water uptake [1,5]. Stress relaxation experiments are conducted by eliminating the water uptake and transpiration for the growing walled cell and measuring the decreasing turgor pressure as a function of time using a pressure probe [6,10].…”

Section: Discussionmentioning

confidence: 99%

“…During normal growth, the biochemical reactions that loosen the wall, wall stress and pressure relaxation, water uptake, and subsequent plastic and elastic deformation of the cell wall chamber occur simultaneously and continuously [1]. However, the description of the sequential individual events highlights the important events and the importance of the elastic deformation of the wall that is needed to produce P .…”

Section: Introductionmentioning

confidence: 99%

“…This finding reveals that the cell wall deformation rate limits and controls the expansive growth rate, and the biophysical equation that describes the wall deformation rate can be used to describe the expansive growth rate. It was previously shown that the rate of wall stress relaxation and turgor pressure relaxation are central to expansive growth [1,5] and a dimensionless governing equation was obtained and solved [3,5]. It was shown that the turgor pressure relaxation and stress relaxation rates are controlled by the magnitude of Π pe .…”

Section: Introductionmentioning

confidence: 99%

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Dimensionless Numbers to Analyze Expansive Growth Processes

Ortega

2019

Plants

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Cells of algae, fungi, and plants have walls and exhibit expansive growth which can increase their volume by as much as 10,000 times. Expansive growth is central to their morphogenesis, development, and sensory responses to environmental stimuli. Equations describing the biophysical processes of the water uptake rate and the wall deformation rate have been derived, validated, and established. A significant amount of research provides insight into the molecular underpinnings of these processes. What is less well known are the relative magnitudes of these processes and how they compare during expansive growth and with walled cells from other species. Here, dimensionless numbers (Π parameters) are used to determine the magnitudes of the biophysical processes involved in the expansive growth rate of cells from algae (Chara corallina), fungi (Phycomyces blakesleeanus), and plants (Pisum satinis L.). It is found for all three species that the cell’s capability for the water uptake rate is larger than the wall plastic deformation rate and much larger than the wall elastic deformation rate. Also, the wall plastic deformation rates of all three species are of similar magnitude as their expansive growth rate even though the stress relaxation rates of their walls are very different. It is envisioned that dimensionless numbers can assist in determining how these biophysical processes change during development, morphogenesis, sensory responses, environmental stress, climate change, and after genetic modification.

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“…The Updates section of the issue begins with two articles that describe recent discoveries on the biomechanics and control mechanisms of cells that employ either a diffuse growth (Cosgrove, 2018) or tip growth mechanism (Bascom et al, 2018). Quantitative multivariate live cell imaging enables the creation of computational models that predict the mechanics of morphogenesis.…”

Section: Growth Strategies and Biomechanicsmentioning

confidence: 99%