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Related Experiment Video

Updated: Oct 2, 2025

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

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Symplastic communication in the root cap directs auxin distribution to modulate root development.

Meng Li¹, Mengxue Wang¹, Qingyun Lin¹

¹College of Life Sciences, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.

Journal of Integrative Plant Biology

|February 24, 2022

Summary

Blocking symplastic communication in Arabidopsis root caps severely impairs root development. Disrupted cell-to-cell signaling in differentiated collumella cells alters auxin distribution, affecting the stem cell niche and meristem growth.

Keywords:

auxin root cap root development stem cell niche symplastic communication

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Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

Area of Science:

Plant Biology
Cell Biology
Developmental Biology

Background:

Root cap protects the root meristem and senses environmental signals.
Symplastic communication is crucial for signal transduction in plants.
The role of root cap symplastic communication in root growth is not well understood.

Purpose of the Study:

To investigate how symplastic communication between root cap cells influences root development.
To elucidate the signaling pathways involved in root growth regulation.

Main Methods:

Utilized an inducible system in Arabidopsis to specifically block symplastic communication in the root cap.
Transiently blocked plasmodesmata (PD) in differentiated collumella cells.

Main Results:

Transient blockage of plasmodesmata in differentiated collumella cells severely impaired root development.
The stem cell niche and proximal meristem were particularly affected.
Disrupted symplastic communication led to rapid alterations in auxin distribution within the stem cell niche.
Later stages showed inhibited cell division in the proximal meristem, likely due to reduced auxin levels.

Conclusions:

Differentiated collumella cells in the root cap play an essential role in mediating signaling pathways.
Symplastic communication within the root cap is vital for directing root development and maintaining meristem function.