Professor Pierre Frendo has studied the physiology and the molecular regulation of nitrogen-fixing symbiosis between Rhizobia and leguminous plants for more than 20 years. He has published more than 50 articles in international peer-reviewed journals and books. He is the group leader of a team of ten researchers/ lecturers, working on the redox regulation of the plant-bacteria interaction during nitrogen-fixing symbiosis. After 17 years of work in the French CNRS, he has been recruited as a Professor in the Nice-Sophia Antipolis University. He is a member of the French Society of Plant Biology and elected member of the French National Council of Universities.