PBIO 117 Study Guide - Powdery Mildew, Stem Rust, Downy Mildew

• School: University of Vermont
• Department: Plant Biology
• Course: PBIO 117
• Professor: Terrence P.Delaney

Document Summary

Plant pathology & history: ergot: salem witch trials. Bad crop year is evidence that consumption of infected wheat occurred. Contains lysergic diethylamide acid (lsd), side effects correlate with problems described by victims" and/or witches". Psychoactive properties accidentally isolated in 1938, is now cultivated for medicinal purposes: tea in england. Coffee was originally predominant in 1600"s until coffee rust devastated crop, tea then became more popular: late blight: irish potato famine. Monoculture- one single variety of potato, minimum genetic. Plant pathology today variation: newly identified diseases/ emergent more virulent strains. Sudden oak decline & ug99 strain of wheat stem rust (defeats resistance genes in 90% of varieties: newly introduced. Consequence of human activity moving material across ecological barriers. Plum pox & citrus canker: reemerging/ new variety of pathogen. Pierce"s disease on grapes & late blight: global food security. Management practices: light planting increases risk of pathogen spread, watering that creates prolonged leaf wetness can increase risk of pathogen infection.