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Light Acquisition

Light Acquisition

In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.

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Related Experiment Video

Updated: Feb 19, 2026

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

Identifying Developmental Zones in Maize Lateral Root Cell Length Profiles using Multiple Change-Point Models.

Beatriz Moreno-Ortega^1,2,3,4, Guillaume Fort^1,4, Bertrand Muller^1,4

¹LEPSE, INRA, Montpellier SupAgro, Montpellier, France.

Frontiers in Plant Science

|November 11, 2017

Summary

This summary is machine-generated.

This study introduces novel segmentation models using cell length profiles to define root apex developmental zones. Findings reveal auxin

Keywords:

auxin mutant lateral root diversity multiple change-point model piecewise linear function principal component analysis root apex

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Last Updated: Feb 19, 2026

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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Published on: December 2, 2016

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Published on: September 22, 2023

Area of Science:

Plant Biology
Developmental Biology
Root Anatomy

Background:

Defining root apex developmental zones (division, elongation, mature) is challenging using traditional methods.
Cell length profiles offer an underexplored approach for root zonation analysis.

Purpose of the Study:

To develop and validate segmentation models for identifying root apex developmental zones based on epidermal cell length profiles.
To investigate the role of auxin signaling in coordinating cell division, elongation, and differentiation.

Main Methods:

Developed segmentation models using heteroscedastic piecewise linear models for maize lateral roots.
Analyzed cell length profiles, first root hair position, and root diameter.
Utilized principal component analysis for global analysis of wild type and auxin signaling mutants (rtcs, rum-1).

Main Results:

Successfully identified distinct division, elongation, and mature zones in most lateral roots.
Observed missing division or elongation zones in arrested roots.
Results support auxin-dependent regulation of cell flux, elongation, and differentiation.

Conclusions:

Cell length profiles provide a robust method for root apex zonation.
The proposed models enhance understanding of developmental regulation in plant organs.
Auxin signaling plays a crucial role in coordinating root development.