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Related Experiment Video

Updated: Sep 3, 2025

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves

Published on: December 2, 2016

Cell type-specific dynamics underlie cellular growth variability in plants.

Constance Le Gloanec¹, Loann Collet¹, Sylvia R Silveira¹

¹Institut de Recherche en Biologie Végétale, Département de Sciences Biologiques, Université de Montréal, 4101 Sherbrooke St E, Montréal, QC H1X 2B2, Canada.

Development (Cambridge, England)

|July 27, 2022

Summary

This summary is machine-generated.

Cellular growth variability in Arabidopsis thaliana organs is mainly driven by differentiating stomata. This specialized cell behavior influences organ shaping, with neighbors buffering growth differences for robust development.

Keywords:

Arabidopsis thaliana Floral organs Leaf Live-imaging Local growth variability Stomata Trichomes

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Last Updated: Sep 3, 2025

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves

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Live Cell Imaging of Microtubule Cytoskeleton and Micromechanical Manipulation of the Arabidopsis Shoot Apical Meristem

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Published on: May 23, 2020

Area of Science:

Plant biology
Developmental biology
Cellular dynamics

Background:

Organ development requires coordinated growth, patterning, and differentiation.
Plant cell growth is guided by positional information but exhibits significant heterogeneity.
The sources of cellular growth variability in plants remain largely unknown.

Purpose of the Study:

To investigate the origin and significance of cellular growth variability in developing Arabidopsis thaliana organs.
To determine if stomatal differentiation contributes to local growth rate differences.
To understand how cellular heterogeneity impacts overall organ shape and robustness.

Main Methods:

Utilizing time-lapse imaging to track cellular dynamics in vivo.
Comparing growth heterogeneity in different Arabidopsis thaliana organ regions (leaf blade, midrib, petiole).
Analyzing cellular growth in wild-type and stomata-deficient mutant plants, as well as floral organs.

Main Results:

Cellular growth heterogeneity is significantly higher in the leaf blade compared to the midrib and petiole.
Increased variability correlates with developing stomata, which exhibit distinct growth programs.
Mutant analysis confirms that stomatal differentiation is a primary driver of local growth variability.

Conclusions:

Cell-autonomous growth programs of specialized cells, particularly stomata, are the main source of local growth variability.
Neighboring cells, including trichomes, buffer these growth differences to ensure robust organ shape.
Understanding cellular heterogeneity is crucial for comprehending plant organ development and morphogenesis.