Séminaire de Juan IMPERIAL (Université de Madrid)


 Olivier Troccaz    20/10/2015 : 13:00

rhizobium.jpg

Le mardi 20 octobre 2015 à 13h00, amphi A, bâtiment 2a, Campus de Beaulieu, UR1

Le mardi 20 octobre 2015 à 13h00, amphi A, bâtiment 2a, Campus de Beaulieu, UR1

Genomics of host preference in the Rhizobium-legume system


Abstract :
Legumes have achieved independence from external nitrogen fertilizers through symbiosis with diazotrophic root bacteria collectively known as rhizobia. This effective symbiosis, of paramount importance in Agriculture, is highly specific. Well-known determinants of specificity are the chemical signals exchanged by both symbiotic partners during the establishment of the symbiosis. By using a population genomics approach with the Rhizobium leguminosarum / pea symbiosis we have been able to show that additional, more subtle mechanisms of selection of the microsymbiont by the plant exist, that can be experimentally magnified in mesocosm studies.

Contact : Juan IMPERIAL