New Insights of Ustilago maydis as Yeast Model for Genetic and Biotechnological Research: A Review

Abstract

The basidiomycete Ustilago maydis is a biotrophic organism responsible for corn smut disease. In recent years, it has become one of the most promising models for biochemical and biotechnological research due to advantages, such as rapid growth, and easy genetic manipulation. In some aspects, this yeast is more similar to complex eukaryotes, such as humans, compared to standard laboratory yeast models. U. maydis can be employed as a tool to explore physiological processes with more versatility than other fungi. Previously, U. maydis was only considered as a phytopathogenic fungus, but different studies have shown its potential as a research model. Therefore, numerous promising studies have focused on deepening our understanding of the natural interactions, enzyme production, and biotechnological capacity. In this review, we explore general characteristics of U. maydis, both as pathogenic and "innocuous" basidiomycete. Additionally, a comparison with other yeast models focusing on genetic, biochemical, and biotechnological research are analyzed, to emphasize the versatility, dynamism, and novelty that U. maydis has as a research model. In this review, we highlight the applications of the yeast form of the fungus; however, since the filamentous form is also of relevance, it is addressed in the present work, as well.

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