urediniospore

/jʊˈriːdɪniəˌspɔr/
noun
  1. A type of spore produced by rust fungi that spreads the infection to new host plants.
    • Each urediniospore can germinate and infect a healthy plant within hours.
    • Farmers monitor urediniospore levels to predict rust outbreaks in their crops.
    • The urediniospore is carried by the wind from one wheat field to another.