I am a post-doc at the University of Southern California studying the ecological genomics of salinity adaptation in Medicago truncatula and its Sinorhizobium symbionts. I am applying whole-genome resequencing of plant and bacteria to identify genetic regions that assort with habitat, are associated with phenotypic variation, and show signatures of natural selection.
For my PhD work, I experimentally evolved Sinorhizobium on its host Medicago truncatula and built an adaptive dynamics model of symbiont diversification.
As an undergrad, I did an independent project investigating adaptive diversification in E. coli with Michael Doebeli and Michael Travisano. I found that the repeatable diversification into “large” and “small” colonies was linked to differences in resource use in batch culture—larges tend to grow faster on glucose but have a long lag before switching to acetate, while smalls switch immediately. Furthermore, smalls appear to use acetate during the first phase of “diauxic” growth unlike the larges. A number of great people in the lab after me fleshed out the story further!