Christian Dumas


Christian Dumas is a French biologist born on January 2, 1943. He is a professor at the École normale supérieure in Lyon. Dumas has devoted himself to the study of the specific sexual reproduction mechanisms of flowering plants and their applications for the genetic improvement of cultivated plants. He is also the scientific director of the botanical garden of the Parc de la Tête d'Or in Lyon.

Course

He studied at the IPES at Claude Bernard University. From 1965 to 1968, he was a teacher in secondary education including 1 year at the Centre Pédagogique Régional de Lyon. He passed the CAPES in natural sciences in 1968, followed by 2 years as a Volunteer in the National Active Service in Tunisia.
He was seconded to higher education as an assistant at Claude Bernard University in 1968 and became a doctor of natural sciences in 1975, Assistant Professor at UCB from 1975 to 1984, Visiting, Melbourne University in 1981 and 1984, Professor at the École Normale Supérieure de Saint-Cloud from 1985 to 1986 and at the École Normale Supérieure de Lyon, where he created and directed the Cellular Recognition and Plant Improvement Laboratory then the Plant Reproduction and Development Laboratory. He was Visiting Professor, Tohoku University and Miyasaki University, Stanford, UCLA, Flagstaff University.

Scientific work

Dumas first explored the mechanisms of stigmatous secretion: the stigma is in the flower, the female organ that receives pollen pollen is accepted or rejected by the female organ through mechanisms governed by the "major sexual incompatibility complex"; b) fertilization is double and its determinism has been studied because female and male gametes have been isolated in vitro; c) the formation of zygotes in vitro and the analysis of mutants also allows the research of genes for early embryo development. In these various key areas of seed production, the team led by Christian Dumas characterized the stigmatic receptor linked to the incompatibility mechanism as well as its ligand, it also characterized the stigmatic and ovular receptivity period and also made it possible to carry out various pollination-fertilization bioassays, including the first in vitro fertilization in flowering plants under physiological conditions close to normal. This work has been carried out in several model and/or interesting species such as maize, cabbage Brassica oleracea and Arabidopsis thaliana, the fruit fly of plant biologists; in addition, the search for genes involved in floral fragrance and flower structure has been initiated in rose as well as preliminary work on the origin of flowering plants using Amborella trichopoda-core species of all current flowering plants endemic to New Caledonia. This work has been carried out within the framework of various international programmes and/or collaborations with industrial seed partners.

Pedagogical activity

Dumas has remained close to secondary education through his close links with the Association of Professors of Biology and Geology by organizing practical workshops, training seminars or participating in its events. In addition, he has worked with Pierre Léna, in "La main à la Pâte" in different forms: practices in the "science seed workshops" at the École des Houches or Cargèse. He was involved in the various committees of the French Academy of sciences which led to the creation of the "Fondation La Main à la Pâte" and the creation of the "Maisons pour la Science". He continues to be a referent for the Maison Auvergne and the École des sciences de Chateauneuf-les-Bains.

Honours

He was elected to the French Academy of sciences as Correspondent, Animal and Plant Biology Section in 1989 and then as Member, Integrative Biology Section in 2002 to which he was a delegate between 2011 and 2014. He was elected senior member of the Institut Universitaire de France from 1996 to 2006. He has been Professor Emeritus since 2011, he is a member of two Academy commissions: the Teaching Commission and the Environment Commission; he also chaired the working group on the reform of its governance in 2009.
       - The flower: from birth to reproduction! 2007
       - Plants have their hormones, 2009
       - Biodiversity explained to high school students, 2010
       - The ingenuity of plants to ensure their survival under extreme conditions, 2011
       - Orchids of France: 150 fragile and magnificent species, 2011.