I have three lines of research focused on Plant Biotechnology. The first line is directed to the in vitro propagation of threatened cacti, and herbaceous plants for preservation purposes. The second is related to the obtainment of secondary metabolites, with antioxidant properties, from the in vitro cultures. This methodology allows to take advantage of the phytochemical potential of the species under study without affecting the natural populations. Recently we analyzed the biological activities of the extracts in mammalian cells founding that they exhibited anti-inflamatory and vasorelaxant activities The last line of research is focused on lead removal by in vitro root cultures and plants of Scirpus americanus (normal and transformed). We are studying the participation of the antioxidants systems in the lead tolerance. It is expected to use the plants in bioremediation process of contaminated water.