A core question of the Harmon lab is how plants optimize stress tolerance, growth, and development by organizing their daily and seasonal activities with the circadian clock. Circadian clocks generate endogenous 24-hour rhythms that control many aspects of plant, animal, and fungal physiology. The lab investigates fundamental clock mechanisms with the model plant Arabidopsis thaliana and dissects pathways regulating daily rhythms in the model cereal crops maize and sorghum.