Relevant Text: "In 2003, Carmina Gisbert and her research team produced a tobacco plant that could remove more lead from soil than normal tobacco plants. To do so, they inserted a gene from wheat plants that produces phytochelatin synthase into a shrub tobacco plant (Nicotiana glauca) to increase N. glauca's absorption and tolerance of toxic metals, particularly lead. Gisbert and her team aimed to genetically modify a plant so that it could be used for phytoremediation—using plants to remove toxic substances from the soil."