We study genetic networks that enable plants to sense and respond to environmental signals. Our research is currently focused on understanding how plant growth is regulated by karrikins, a class of chemicals found in smoke, and the plant hormones strigolactones. Karrikins and strigolactones have unique effects on growth, but remarkably act through parallel signaling mechanisms. We are interested in how these signals produce different responses, and how these signaling mechanisms have evolved in plants. We are also working toward crop improvement through modulation of strigolactone pathways.