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Related Experiment Video

Updated: Oct 17, 2025

Author Spotlight: Exploring Plant-Microbe Interactions Through Root Exudates in a Novel Growth System

Author Spotlight: Exploring Plant-Microbe Interactions Through Root Exudates in a Novel Growth System

Published on: November 17, 2023

Manipulating exudate composition from root apices shapes the microbiome throughout the root system.

Akitomo Kawasaki¹, Paul G Dennis², Christian Forstner²

¹CSIRO Agriculture and Food, Canberra, ACT 2601, Australia.

Plant Physiology

|October 7, 2021

Summary

Altering root exudates in rice and wheat significantly changed soil microbiomes. However, root type, location, and soil type had a greater impact than these specific compounds.

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Last Updated: Oct 17, 2025

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Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere

Published on: May 2, 2018

Area of Science:

Plant and Soil Science
Microbiology
Genetics

Background:

Beneficial soil microbes enhance plant growth, but microbial inoculants often show inconsistent results due to poor persistence.
Root exudates can recruit beneficial microbes, offering a potential strategy to improve inoculant efficacy and plant production.

Purpose of the Study:

To investigate if altering root exudate composition influences the root microbiome in cereals.
To determine how changes in root exudates affect microbiome composition throughout the entire root system.

Main Methods:

Modified transporter gene expression in rice and wheat to alter root exudate release (malate, citrate, γ-amino butyric acid).
Analyzed the impact of these exudates on root microbiome composition across different root types, positions, and soil types.

Main Results:

Exudate compounds significantly altered microbiome composition throughout the root system in both rice and wheat.
Root type, position (apex vs. base), and soil type were found to be more influential on microbiome structure than the manipulated exudates.

Conclusions:

Manipulating root exudate composition is a viable strategy for altering cereal root microbiomes.
Understanding the interplay between exudates, root characteristics, and soil environment is crucial for effective microbiome engineering in agriculture.