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Related Experiment Video

Updated: May 11, 2026

Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
08:31

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

Unified changes in cell size permit coordinated leaf evolution.

Tim J Brodribb1, Greg J Jordan1, Raymond J Carpenter2

  • 1School of Plant Science, University of Tasmania, Hobart, Tasmania, 7001, Australia.

The New Phytologist
|May 8, 2013
PubMed
Summary
This summary is machine-generated.

Evolutionary changes in leaf cell sizes coordinate water transport and loss in Proteaceae plants. This coordination, possibly driven by genome size, maintains tissue function and suggests alternative strategies for different habitats.

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Area of Science:

  • Plant Biology
  • Evolutionary Biology
  • Ecology

Background:

  • Coordinated tissue function is crucial for plant adaptation but poorly understood during lineage diversification.
  • The Proteaceae family offers a diverse model for studying evolutionary coordination in woody plants.

Purpose of the Study:

  • To investigate the evolutionary coordination of vascular, epidermal, and cortical leaf tissues in Proteaceae.
  • To understand how cell size variations influence leaf function and inter-tissue coordination.

Main Methods:

  • Comparative analysis of cell sizes (guard, epidermal, palisade, xylem) across Proteaceae species.
  • Examination of correlations between cell sizes, vein density, and stomatal density.
  • Assessment of the relationship between stomatal conductance and vascular capacity.

Main Results:

  • Positive correlations found between sizes of guard, epidermal, palisade, and xylem cells.
  • Negative association between cell sizes and vein/stomatal densities.
  • Efficient matching of water loss capacity (stomatal conductance) and vascular supply, likely mediated by stomatal size.

Conclusions:

  • Unified evolutionary changes in cell size coordinate leaf tissue function, maintaining essential functional links.
  • Genome size may mediate these coordinated evolutionary changes.
  • Alternative strategies involving cell size reduction or increase may facilitate adaptation to different habitats (forest vs. open).