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Related Experiment Video

Updated: Jun 20, 2026

Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques

Whole-mount Clearing and Staining of Arabidopsis Flower Organs and Siliques

Published on: April 12, 2018

AGAMOUS Coordinates Flower Development Beyond Organ Identity: AGAMOUS Coordinates Flower Development in Space and

Koki Nakamura¹, Nobutoshi Yamaguchi¹, Toshiro Ito¹

¹Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0192, Japan.

Plant & Cell Physiology

|June 19, 2026

Summary

AGAMOUS (AG) is a MADS-box transcription factor. It coordinates late flower development, linking organ identity to maturation and senescence through complex regulatory networks.

Keywords:

AGAMOUS Flower development Gene regulatory network

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Area of Science:

Plant developmental biology
Molecular genetics
Floral development

Background:

AGAMOUS (AG) is a key MADS-box transcription factor regulating floral organ identity and meristem determinacy.
Emerging evidence reveals AG's broader roles in late developmental programs, influenced by tissue context, epigenetics, and hormones.

Purpose of the Study:

To review recent advances in AG-mediated regulatory networks.
To highlight AG's role in orchestrating late flower development across multiple organs.

Main Methods:

Literature review of AGAMOUS research.
Analysis of AG's regulatory targets and pathways.
Integration of epigenetic and hormonal signaling data.

Main Results:

AG regulates gynoecium patterning, ovule/fruit development, and epidermal cell fate.
In stamens, AG integrates epigenetic timing (H3K27me3 dilution) with jasmonic acid signaling for filament and anther development.
AG influences perianth senescence and abscission non-cell-autonomously via jasmonic acid signaling.

Conclusions:

AG acts as a spatiotemporal systems regulator, connecting organ identity to morphogenesis, maturation, and organ disposal.
Dynamic, multilayered control by AG orchestrates complex late flower development.