At the Rowland, Dr. Lewis investigated parasitic angiosperms; they are unusual among parasitic organisms in that they and their hosts are in the same order and are very similar physiologically. The comparable physiology of parasite and host enables the parasite to create direct connections with host-plant conductive tissues and cells. Additionally, the host and parasite are influenced by similar endogenous and exogenous physiological cues. We are interested in what kinds of information can be shared across the host-parasite boundary and how this affects both plants’ responses to environmental conditions. The Lewis Lab’s research focused on the use of novel methodology to track transfer of resources and signaling molecules between host and parasite.