Rui Malho is an associate professor in the Department of Plant Biology, Faculty of Sciences of Lisbon. He holds a Ph.D. in cell biology, with a major interest in signal transduction mechanisms and imaging of cell dynamicsb"in particular, the study of pollen tube growth and its signalling pathways. Dr. Malho did post-doctoral work at the University of Edinburgh with A.J. Trewavas and has published 40 papers in international peer-reviewed journals and 8 book chapters.