Arabidopsis is a model system for evolutionary genetics and ecology. We are studying local adaptation in Afroalpine populations of this species. We are also studying phenotypic and genetic change through time (over the last 200 years) using museum specimens.Key papers
Striga hermonthica is a root parasitic plant and is a major constraint to cereal crop yields in Sub-Saharan Africa.
We are studying how hosts (especially sorghum landraces) have adapted in response to local parasite prevalence. At the same time, we are studying the evolution of host generalization vs. specialization by the parasitic Striga.
We are studying the evolution of several domesticated or semi-domesticated species. We are especially interested in how gene flow, environment, and human preferences have shaped these species.Key papers
Cheatgrass (Bromus tecotorum) has invaded much of North America and adapted to local conditions. We are pursuing an NSF Rules of Life-funded project with Peter Adler (Utah State), Mevin Hooten (UT-Austin), and a large network of collaborators (called "BromeCast")BromeCast website