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Related Experiment Video

Updated: Aug 22, 2025

LeafJ: An ImageJ Plugin for Semi-automated Leaf Shape Measurement

LeafJ: An ImageJ Plugin for Semi-automated Leaf Shape Measurement

Published on: January 21, 2013

From genes to shape in leaf development and evolution.

David Wilson-Sánchez¹, Neha Bhatia¹, Adam Runions²

¹Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Cologne, Germany.

Current Biology : CB

|November 8, 2022

Summary

This summary is machine-generated.

Gene activity shapes plant leaf diversity by controlling cellular growth amount, duration, and direction. This framework explains variations from simple to complex leaves, grass leaf development, and carnivorous plant traps.

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Area of Science:

Plant biology
Developmental genetics
Computational modeling

Background:

Plant leaves exhibit remarkable diversity in shape, a trait influenced by genetic factors.
Understanding the genetic basis of leaf morphology is crucial for plant science.

Purpose of the Study:

To conceptualize how gene activity translates into diverse leaf shapes.
To explore the role of cellular growth dynamics in generating leaf geometry.

Main Methods:

Integration of genetic data, live imaging, and computational modeling.
Analysis of gene expression patterns, particularly homeobox genes.
Case studies on eudicot leaf complexity, grass leaf development, and carnivorous plant traps.

Main Results:

Leaf shape is determined by the cumulative effects of genes on cellular growth (amount, duration, direction).
Differences in organ-wide growth duration and localized growth repression contribute to simple vs. complex leaf forms.
Lateral expansion of progenitor cells and domain-specific growth remodeling explain grass leaf morphology.
Constrained directional growth leads to 3D deformations, as seen in carnivorous plant traps.
Homeobox gene expression changes correlate with altered growth patterns underlying leaf shape variation.

Conclusions:

Gene activity fundamentally dictates leaf geometry through modulation of cellular growth.
Diverse leaf forms arise from specific alterations in growth parameters controlled by genetic pathways.
Homeobox genes play a significant role in the evolutionary diversification of leaf shapes.