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Updated: Sep 3, 2025

A Strategy to Validate the Role of Callose-mediated Plasmodesmal Gating in the Tropic Response

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Published on: April 17, 2016

How Strigolactone Shapes Shoot Architecture.

Khopeno Khuvung¹, Federico A O Silva Gutierrez¹, Didier Reinhardt¹

¹Department of Biology, University of Fribourg, Fribourg, Switzerland.

Frontiers in Plant Science

|July 29, 2022

Summary

This summary is machine-generated.

Strigolactone, a plant hormone, and auxin regulate shoot branching and apical dominance. Spatial strigolactone signaling and local bud mechanisms are key to understanding plant architecture control.

Keywords:

BRANCHED1 abscisic acid apical dominance auxin branching cytokinin dormancy strigolactone

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Published on: May 23, 2020

Area of Science:

Plant Biology
Hormonal Regulation
Plant Architecture

Background:

Strigolactone (SL) is a crucial phytohormone regulating plant architecture, recognized only recently.
Apical dominance, controlled by the shoot apex inhibiting axillary buds, is central to plant architecture.
Both strigolactone and auxin are involved in shoot branching and apical dominance.

Purpose of the Study:

To discuss the spatial aspects of strigolactone biosynthesis, transport, and sensing in relation to apical dominance.
To explore the mechanisms of bud dormancy and activation, including hormonal and sugar signaling pathways.

Main Methods:

Review and discussion of existing literature on strigolactone and auxin signaling in plant development.
Analysis of spatial dynamics in strigolactone pathways.
Consideration of local mechanisms in axillary bud regulation.

Main Results:

Strigolactone and auxin roles in apical dominance are conserved in flowering plants.
Mechanisms of bud activation show divergence and involve hormonal and sugar signaling.
Spatial distribution of strigolactone is critical for its function in apical dominance.

Conclusions:

Understanding the spatial regulation of strigolactone is essential for comprehending apical dominance.
Local factors, including sugar signaling, play a significant role in axillary bud activation.
Further research into the interplay of hormonal and sugar pathways can elucidate plant architecture control.