Genus Ustilago refers to a group of fungi that are commonly known as smut fungi. These fungi are known for causing diseases in various plants, including corn, wheat, and barley. Synonyms for the Genus Ustilago include Tilletia, Procacidiella, and Cintractia, among others. These synonyms are used interchangeably in scientific literature to refer to the same group of fungi. While the Genus Ustilago has a negative impact on agriculture, it also has potential for use in biotechnology. Some species of smut fungi are being researched for their ability to produce valuable compounds such as secondary metabolites and enzymes.