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Related Experiment Video

Updated: Jun 13, 2026

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

Increased leaf size: different means to an end.

Nathalie Gonzalez¹, Stefanie De Bodt, Ronan Sulpice

¹Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium.

Plant Physiology

|May 13, 2010

Summary

This summary is machine-generated.

Leaf size in Arabidopsis is controlled by multiple genes. Overexpressing five specific genes (AVP1, GRF5, JAW, BRI1, GA20OX1) enlarged leaves by increasing cell number, revealing independent growth pathways.

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Last Updated: Jun 13, 2026

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Published on: October 12, 2015

Analysis of Arabidopsis thaliana Growth Behavior in Different Light Qualities

Analysis of Arabidopsis thaliana Growth Behavior in Different Light Qualities

Published on: February 2, 2018

Area of Science:

Plant biology
Genetics
Molecular biology

Background:

Plant organ size is regulated by complex genetic and environmental factors.
Coordination of cell expansion and cell cycle is crucial for organ growth.
The genetic control of leaf size remains incompletely understood.

Purpose of the Study:

To investigate the genetic control of leaf size in Arabidopsis thaliana.
To comparatively analyze transgenic lines overexpressing growth-promoting genes.
To elucidate the molecular mechanisms underlying leaf size regulation.

Main Methods:

Generation and analysis of transgenic Arabidopsis lines overexpressing AVP1, GRF5, JAW, BRI1, and GA20OX1.
Standardized environmental conditions for growth analysis.
Analysis of hormone levels, transcriptome, and metabolome.
Comparative analysis of individual and combined gene overexpression effects.

Main Results:

Overexpression of the five selected genes resulted in enlarged leaves, primarily due to increased cell number.
Leaf size increase varied with leaf position and growth conditions.
Molecular analyses revealed distinct molecular bases for the growth phenotype in each line.
Enhanced organ growth appears to be governed by multiple, independent pathways.

Conclusions:

Multiple genetic pathways independently regulate organ size in Arabidopsis.
Overexpression of specific genes can enhance leaf size through increased cell proliferation.
Understanding these independent pathways provides insight into plant growth control.