We are interested in plant genome structure and evolution, especially the nature of rearrangements and the contributions of transposable elements. We also study the relationship between genome structure, evolution and gene function. We have long-standing interesteds in genetic diversity and its use in under-utilized crops of the deveoping world, the rapid evolution of complex disease resistance loci in plants, fine structure recombinational analysis, biomass improvement for bioenergy, and the coevolution of plant/microbe and plant/parasite interaction.