Tuan-hua David Ho is interested in the mechanisms of developmental transition from embryogenesis to seed germination, a process governed by two phytohormones, gibberellins (GA) and abscisic acid (ABA). Since plant embryos are very resistant to environmental stresses such as drought and cold, the lab also studies the role of stress-induced proteins in the establishment of stress tolerance in plants. Research is focused on (1) hormonal control of gene expression in the aleurone cells of cereal grains and (2) regulation and function of stress-induced genes.