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Updated: Jan 14, 2026

Using Ustilago maydis as a Trojan Horse for In Situ Delivery of Maize Proteins

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Published on: February 8, 2019

Microbial community differences between healthy and Ustilago-infected oats.

Chao Cheng¹, Songhe Xu², Zhiguo Liu³

¹School of Life Science and Technology, Jining Normal University, Jining, China; Ulanqab Key Laboratory of Cash Crop Stress Resistance, Jining, China; Institute of Biotechnology R&D and Application, Jining Normal University, Jining, China.

|January 12, 2026

Summary

Ustilago infection significantly alters oat microbiomes, replacing beneficial bacteria with pathogens and causing oxidative damage. This study reveals disease-driven microbial shifts impacting oat health and yield.

Keywords:

Biocontrol High-throughput sequencing technology Microbial diversity Oats Ustilago hordei

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A Rapid and Efficient Method for Assessing Pathogenicity of Ustilago maydis on Maize and Teosinte Lines

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Published on: January 3, 2014

Area of Science:

Plant Pathology
Microbial Ecology
Agricultural Science

Background:

Ustilago fungus severely impacts oat yield.
Microbial communities in infected oats are poorly understood.
Understanding these shifts is crucial for crop protection.

Purpose of the Study:

Characterize microbial communities in healthy vs. Ustilago-infected oats.
Compare physiological traits between healthy and diseased plants.
Investigate disease-driven microbial restructuring and its impact.

Main Methods:

16S rRNA and ITS amplicon sequencing for microbial profiling.
Biochemical assays to assess physiological traits.
Comparative analysis of microbial communities and plant health indicators.

Main Results:

Healthy oats showed higher bacterial diversity, dominated by beneficial microbes.
Ustilago-infected oats exhibited significant microbial shifts, with increased pathogens.
Infection led to oxidative damage (higher malondialdehyde) and reduced antioxidant enzyme activity.

Conclusions:

Ustilago infection causes substantial microbial restructuring in oats.
Oxidative stress is a key consequence of Ustilago infection.
These findings highlight the impact of microbial shifts on oat plant health.