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Related Experiment Video

Updated: Mar 6, 2026

Genetic Manipulation of the Plant Pathogen Ustilago maydis to Study Fungal Biology and Plant Microbe Interactions

Genetic Manipulation of the Plant Pathogen Ustilago maydis to Study Fungal Biology and Plant Microbe Interactions

Published on: September 30, 2016

Transcriptomic analysis of basidiocarp development in Ustilago maydis (DC) Cda.

C G León-Ramírez¹, J L Cabrera-Ponce¹, D Martínez-Soto¹

¹Departamento de Ingeniería Genética, Unidad Irapuato, Centro de Investigación y de Estudios Avanzados del IPN, 36825 Irapuato, Guanajuato, Mexico.

Fungal Genetics and Biology : FG & B

|March 14, 2017

Summary

Researchers identified genes and pathways controlling fungal basidiocarp development in Ustilago maydis. This study reveals key molecular mechanisms underlying corn smut development, offering insights into fungal morphogenesis.

Keywords:

Basidiocarps Copper transport Dicamba MAPK pathway Transcription factors Ustilago maydis

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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:

Mycology
Plant Pathology
Molecular Biology

Background:

Ustilago maydis causes corn smut disease.
Previous work showed U. maydis forms basidiocarps near maize calli with Dicamba.

Purpose of the Study:

To understand the molecular mechanisms of U. maydis basidiocarp development.
To identify differentially expressed genes during basidiocarp formation.

Main Methods:

Transcriptome analysis of young and mature basidiocarps.
Functional gene analysis using databases (e.g., MIPS).
Analysis of a mapkk mutant for pathway importance.

Main Results:

Identified 2002 differentially expressed genes in young basidiocarps and 1064 in mature ones.
Found genes involved in development, transcription factors (FOXO3, MIG3, PRO1, TEC1), transporters, and cytochromes P450.
Observed up-regulation of hydrophobins, laccases, and ferric reductase (FRE/NOX) in mature basidiocarps.
A mapkk mutant failed to form basidiocarps, highlighting the MAPK pathway's role.

Conclusions:

The MAPK signaling pathway is crucial for U. maydis basidiocarp development.
Identified novel genes and pathways regulating fungal morphogenesis in response to host interaction and environmental cues.