Investigating the effects of heterosis and stress on the Zea mays epigenome

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Genomes can change dynamically. In plants, these changes can occur in response to external stimuli such as water stress. Or, changes can occur in response to hybridization between different individuals. Whole genome sequences and new technologies in molecular and computational biology enable us to investigate these changes on a genome-wide scale. In this project, we will characterize DNA modifications across the maize genome that occur in response to water stress and hybridization. We will determine how transposable elements and small RNAs contribute to these genomic changes. Finally, we will investigate if genome modifications differ across individuals. This research will enhance our understanding of how plant genomes respond to stimuli, the mechanisms of these responses, and the natural diversity of these responses. This knowledge may help enhance the productivity and sustainability of important crop plants.