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Related Experiment Video

Updated: Jun 20, 2026

Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

Multiple signaling pathways control nitrogen-mediated root elongation in maize.

Guohua Mi¹, Fanjun Chen, Fusuo Zhang

¹Lab of Plant-Soil Interaction; MOA; Department of Plant Nutrition; College of Resources and Environmental Science; China Agricultural University; Haidian, Beijing China.

Plant Signaling & Behavior

|August 26, 2009

Summary

Plants adapt to soil by altering root architecture in response to nutrient availability. Low soil nitrogen stimulates root elongation in maize, involving plant hormones and NO signaling.

Keywords:

NO auxin cytokinin nitrogen root growth

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Area of Science:

Plant Biology
Agronomy
Soil Science

Background:

Root system architecture is crucial for plant adaptation to soil environments.
Nutrient availability, particularly nitrogen (N), significantly influences root development.
Plants adjust root growth based on external N concentration and internal N status.

Purpose of the Study:

To investigate the mechanisms by which low soil nitrogen affects root elongation in maize.
To explore the roles of plant hormones (auxin, cytokinin) and NO signaling in nitrogen-mediated root growth regulation.

Main Methods:

This study focuses on the physiological and molecular responses of maize to varying soil nitrogen levels.
Investigated root elongation and hormonal signaling pathways under low nitrogen conditions.

Main Results:

Low soil nitrogen was observed to stimulate root elongation in maize.
Evidence suggests the involvement of auxin and cytokinin signaling pathways in this response.
The nitric oxide (NO) signaling pathway also appears to play a role in regulating root elongation under nitrogen deficiency.

Conclusions:

Maize exhibits enhanced root elongation as an adaptive strategy to low soil nitrogen conditions.
Plant hormones auxin and cytokinin, along with the NO signaling pathway, are key regulators of nitrogen-responsive root growth.