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Related Experiment Video

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Synthesis and Characterization of Functionalized Metal-organic Frameworks

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

A molecular framework controlling style morphology in Brassicaceae.

Sara Simonini¹, Pauline Stephenson¹, Lars Østergaard²

¹Crop Genetics Department, John Innes Centre, Norwich NR4 7UH, UK.

Development (Cambridge, England)

|February 15, 2018

Summary

Five transcription factors, including auxin response factor ETTIN (ETT), coordinate to establish polarity in Arabidopsis gynoecium development. ETT

Keywords:

Auxin Brassicaceae Gynoecium Style development Transcription factors

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Area of Science:

Plant developmental biology
Molecular genetics
Evolutionary biology

Background:

Organ formation relies on regulatory components integrating developmental and hormonal signals.
Auxin dynamics critically control Arabidopsis gynoecium development.
Coordination of transcription factors (TFs) in gynoecium development remains unclear.

Purpose of the Study:

Investigate the coordination of TFs in Arabidopsis gynoecium polarity establishment.
Elucidate the role of auxin response factor ETTIN (ETT) in this process.
Examine the evolutionary conservation and morphological impact of TF interactions.

Main Methods:

Analysis of TF interactions and their sensitivity to auxin.
Gene regulatory complex identification.
Comparative analysis across Brassicaceae species.

Main Results:

Five TFs, with ETT as a central component, cooperate to establish gynoecium apex polarity.
ETT's interaction with TF partners is auxin-sensitive, suggesting a repressive complex.
Conservation of ETT function across Brassicaceae, with subdomain variation impacting gynoecium morphology.

Conclusions:

ETT and partner TFs form an auxin-sensitive repressive complex crucial for gynoecium polarity.
Variation in TF interaction affinities contributes to morphological diversity and evolution of organ shapes.
This TF network provides a model for understanding conserved developmental mechanisms and evolutionary divergence.