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Related Experiment Video

Updated: Jun 15, 2025

Experimental Design for Laser Microdissection RNA-Seq: Lessons from an Analysis of Maize Leaf Development

Experimental Design for Laser Microdissection RNA-Seq: Lessons from an Analysis of Maize Leaf Development

Published on: March 5, 2017

Cold mediates maize root hair developmental plasticity via epidermis-specific transcriptomic responses.

Yaping Zhou¹, Mauritz Leonard Sommer¹, Annika Meyer^1,2

¹INRES, Institute of Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, Bonn 53113, Germany.

Plant Physiology

|August 27, 2024

Summary

This summary is machine-generated.

Cold stress hinders maize root growth. This study reveals DEHYDRATION RESPONSE ELEMENT-BINDING PROTEIN 2.1 (DREB2.1) negatively impacts root hair development under cold, affecting maize yield.

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Last Updated: Jun 15, 2025

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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
Molecular Biology
Genetics

Background:

Cold stress significantly limits maize (Zea mays L.) production by affecting early development.
Low temperatures impede root growth and alter gene expression patterns in plants.

Purpose of the Study:

To systematically analyze the transcriptomic response of maize primary roots, including tissues and cell types, to cold stress.
To investigate the role of DEHYDRATION RESPONSE ELEMENT-BINDING PROTEIN 2.1 (DREB2.1) in cold-induced root hair regulation.

Main Methods:

Transcriptomic analysis of maize primary roots, tissues, and cell types under cold stress.
Investigating root hair defective mutants (rth5, rth6) for cold tolerance.
Gene expression analysis of DREB2.1 and root hair defective genes (rth3, rth6) under varying temperatures.
Overexpression studies of DREB2.1 in plants.

Main Results:

The epidermis showed a distinct transcriptomic response to cold, with dynamic regulation of root hair formation genes.
Root hair defective mutants (rth5, rth6) exhibited increased cold tolerance in primary root elongation.
DREB2.1 was upregulated in most root tissues but downregulated specifically in root hairs under cold stress.
DREB2.1 overexpression suppressed root hair elongation under moderate cold; it regulated rth3 expression under cold and rth6 expression regardless of temperature.

Conclusions:

DREB2.1 negatively regulates root hair plasticity at low temperatures in maize.
DREB2.1 coordinates the expression of root hair defective genes, influencing cold tolerance and root development.