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Right Place Right Time: Heterogeneity-Driven Organ Geometry.

Livia Camilla Trevisan Scorza¹, Naomi Nakayama¹

¹Institute of Molecular Plant Sciences, SynthSys Centre for Systems and Synthetic Biology, and Centre for Science at Extreme Conditions, University of Edinburgh, Max Born Crescent, King's Buildings, Edinburgh EH9 3BF, UK.

Developmental Cell

|July 13, 2016

Summary

Plants create specific leaf and flower shapes by controlling cell growth rates. Reactive oxygen species help maintain organ geometry during development.

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Area of Science:

Plant biology
Developmental biology
Cell biology

Background:

Organ development in plants requires precise control over size and shape.
Understanding the mechanisms that ensure species-specific organ morphology is a key challenge.

Purpose of the Study:

To investigate the role of local cell growth variability in plant organ geometry.
To identify molecular factors that regulate spatial heterogeneity in cell growth during organ maturation.

Main Methods:

Analysis of cell growth dynamics in developing plant organs.
Investigating the function of reactive oxygen species (ROS) in modulating cell growth patterns.

Main Results:

Local spatiotemporal variability in cell growth rate is crucial for robust control of organ geometry.
Reactive oxygen species (ROS) were found to suppress local heterogeneity in cell growth rates.
This suppression of heterogeneity by ROS contributes to the maturation of organ shape.

Conclusions:

Cellular growth dynamics and their regulation are fundamental to achieving stereotypical plant organ shapes.
Reactive oxygen species play a significant role in ensuring developmental robustness by modulating cell growth heterogeneity.