Uromyces betae is a fungus belonging to the Pucciniaceae family, responsible for causing rust in sugar beets. This pathogen is characterized by its complex life cycle that includes several stages and different spore forms. The cycle begins with the germination of spores on the surface of beet leaves, where the fungus penetrates through the stomata and develops mycelium within the leaf tissue. Subsequently, urediniospores form, which spread rapidly by wind and can reinfect plants during the same season, causing new infections. In the last stage of the cycle, the fungus produces teliospores, which are resistance structures capable of surviving adverse conditions during the winter. With the arrival of spring, the teliospores germinate and release basidiospores, which restart the infection process. The ability of Uromyces betae to produce multiple types of spores and survive in different environmental conditions makes disease control especially challenging.