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Related Experiment Video

Updated: Feb 19, 2026

Production of Arbuscular Mycorrhizal (AM) Fungal Inoculum and Phenotypic Evaluation of Rice and AM Symbiosis Under Saline Conditions

Production of Arbuscular Mycorrhizal (AM) Fungal Inoculum and Phenotypic Evaluation of Rice and AM Symbiosis Under Saline Conditions

Published on: March 14, 2025

Ethylene Mediates Alkaline-Induced Rice Growth Inhibition by Negatively Regulating Plasma Membrane H⁺-ATPase Activity

Haifei Chen^1,2, Quan Zhang^1,2, Hongmei Cai²

¹National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, China.

Frontiers in Plant Science

|November 9, 2017

Summary

This summary is machine-generated.

Rice growth is inhibited by alkaline conditions, primarily affecting root elongation. Ethylene and H+-ATPase activity mediate this response, highlighting a key mechanism in plant adaptation to high pH stress.

Keywords:

ACC H+-ATPase Oryza sativa ethylene growth inhibition high-pH stress

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Published on: January 28, 2020

Area of Science:

Plant Biology
Plant Physiology
Biochemistry

Background:

Plant growth is significantly influenced by soil pH.
Rice exhibits poor adaptation to alkaline conditions, experiencing severe growth inhibition.

Purpose of the Study:

To investigate the role of ethylene and H+-ATPase in rice growth inhibition under alkaline stress.
To elucidate the regulatory mechanisms of plant adaptation to high pH environments.

Main Methods:

Analyzing gene expression related to ethylene biosynthesis under high pH.
Utilizing rice mutants (etol1-1, ein2-1) and ethylene precursor (ACC).
Assessing H+-ATPase activity and rhizosphere acidification.

Main Results:

High pH induced ethylene biosynthesis genes and aggravated growth inhibition, particularly root elongation.
Ethylene perception antagonists and ein2-1 mutants partially alleviated root growth inhibition.
Ethylene negatively regulated H+-ATPase activity, inhibiting rhizosphere acidification under alkaline stress.

Conclusions:

Ethylene plays a critical role in mediating rice growth inhibition under alkaline stress.
H+-ATPase activity is involved in the ethylene-mediated suppression of rice growth at high pH.
Understanding these mechanisms is crucial for improving rice cultivation in alkaline soils.