Martin Crespi became the Director de Recherche DR1 (première classe) in 2008 at the Institut des Sciences du Végétal-CNRS, Gif sur Yvette, France. He got his Ph.D. degree in 1983 from the National Research Council, IBYME, Buenos Aires, Argentina. Crespi held the following positions: Postdoctoral Fellow at the Center for Investigations, Advanced Studies CINVESTAV and Foundation for Applied Biological Research in Irapuato, Mexico and in Mar del Plata, Argentina (1987); Postdoctoral Fellow at Laboratorium voor Genetika, Rijksuniversiteit Gent, Gent, Belgium (1989); Postdoctoral Fellow EEC at the Institut des Sciences Vegetales-CNRS, Gif sur Yvette, France (1992); Chargé de Recherche de première classe CR1 from CNRS, ISV, France (1994); Directeur de Recherche DR2 (deuxième classe), Institut des Sciences du Végétal-CNRS, Gif sur Yvette, France (1999). His research interests involve deciphering the mechanisms of action of different riboregulators and their impact in plant growth and development, by combining cell biology with genetic, genomic, and molecular approaches in Arabidopsis and Medicago truncatula. The remarkable developmental plasticity of roots, their precisely defined gradient of differentiation, their capacity to form de novo meristems (lateral organs) from differentiated cells and their amenability for gene expression analysis, make them an attractive model to reveal mechanisms involving noncoding RNAs in adaptive developmental regulations to the environment. Hence, his studies focus on the impact of posttranscriptional processes mediated by miRNAs and other noncoding RNAs in root developmental plasticity. The results support the notion that a variety of noncoding RNAs (both long and small) through their interaction with specific regulatory genes (e.g., ARF genes, transcription factors, or DNA methylases) may modulate the developmental adaptation of the root system to environmental conditions, and consequently may be key regulators of root developmental plasticity.
Biography Updated on 16 August 2012