He was a Distinguished Professor of Biology at Duke University making significant contributions to understanding the genetic and molecular basis of root growth and development.
He pursued early studies at the University of Paris VI, earning a DEUG diploma (Diplome d'Etudes Universitaire Generale).
At NYU, he founded the Center for Comparative Functional Genomics and conducted fundamental research in the molecular genetics of root development.
His early work focused on understanding asymmetric cell divisions in roots and led to the identification of key regulatory genes, such as SHORT-ROOT and SCARECROW, which are crucial for radial patterning in the model plant Arabidopsis thaliana.
He co-founded and chaired the Scientific Advisory Board at Hi Fidelity Genetics Inc., a company focused on improving crop performance through advanced breeding technologies.