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Updated: May 22, 2026

Lateral Root Inducible System in Arabidopsis and Maize

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

Citric acid alters Arabidopsis root morphology and development through ROS-dependent and ROS-independent mechanisms.

Tao Zhang^1,2, Jesus T Peng¹, Jie Chu¹

¹Department of Cell and Developmental Biology, University of California San Diego, La Jolla, CA 92093, United States.

Plant Physiology

|May 20, 2026

Summary

Citric acid uniquely affects Arabidopsis root development, inhibiting primary roots while promoting anchor roots by scavenging reactive oxygen species (ROS) and altering gene expression.

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Published on: October 11, 2024

Area of Science:

Plant Biology
Molecular Biology
Biochemistry

Background:

Citric acid is crucial for plant metabolism and cellular functions.
Its specific roles in root development and architecture are not fully understood.

Purpose of the Study:

To investigate the distinct effects of citric acid on Arabidopsis primary and anchor root growth.
To elucidate the molecular mechanisms underlying these differential root responses.

Main Methods:

Arabidopsis thaliana root treatment with citric acid.
High-spatial resolution elemental analysis for nutrient profiling.
Transcriptomic analysis to assess gene expression changes.

Main Results:

Citric acid inhibited primary root growth but promoted anchor root growth.
Citric acid acted as a reactive oxygen species (ROS) scavenger, reducing H2O2 levels.
Differential upregulation of lignin biosynthesis and ETHYLENE RESPONSE FACTOR 115 (ERF115) was observed.

Conclusions:

Citric acid differentially impacts root types by modulating ROS balance and gene expression.
Altering ROS at the root-hypocotyl junction induces anchor root formation.
Citric acid influences plant development and root architecture through complex molecular pathways.