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Evolution of Plant Hormone Response Pathways.

Miguel A Blázquez¹, David C Nelson², Dolf Weijers³

¹Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas-Universidad Politécnica de Valencia, 46022 Valencia, Spain;

Annual Review of Plant Biology

|February 5, 2020

Summary

This summary is machine-generated.

Plant hormone signaling pathways evolved diversely. This review compares auxin, jasmonic acid, gibberellic acid, and strigolactone signaling, exploring their origins in early land plants and linking complexity to plant evolution.

Keywords:

evolution hormone signaling plant hormones protein degradation

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Area of Science:

Plant Biology
Evolutionary Biology
Molecular Signaling

Background:

Plant hormone signaling pathways are diverse, with some perception mechanisms involving Skp1/Cullin/F-box ubiquitin ligases.
Key hormones studied include auxin, jasmonic acid, gibberellic acid, and strigolactone.

Purpose of the Study:

To compare core signaling pathways of four major plant hormones.
To investigate the evolutionary origins of hormone signaling mechanisms in early diverging land plants.
To connect the evolution of hormone signaling complexity with major plant developmental transitions.

Main Methods:

Comparative analysis of core signaling pathways in angiosperm model organisms.
Phylogenetic analyses of hormone signaling components.
Genetic studies in basal land plants to understand hormone perception and synthesis.

Main Results:

Established signaling pathways for auxin, jasmonic acid, gibberellic acid, and strigolactone in model plants.
Identified conserved and divergent features in hormone signaling across plant lineages.
Provided insights into hormone synthesis and sensing in early land plants.

Conclusions:

Plant hormone signaling pathways exhibit significant evolutionary history.
The complexity of hormone signaling is linked to major evolutionary events in plant development.
Further research in basal land plants is crucial for understanding hormone signaling evolution.