Les séminaires ont lieu sur le Campus Montpellier SupAgro/INRA de La Gaillarde (2, place P. Viala Montpellier)
Vendredi 12 octobre 2012
Amphi 2 (Bâtiment 2 Bis) à 11h
Cellular and whole-plant iron homeostasis in Arabidopsis: A systems approach
Institute of Plant and Microbial Biology, Academia Sinica, Taiwan, Taipei
Iron deficiency is a world-wide nutritional disorder in both plants and humans, resulting from its restricted bio-availability in most soils, and, subsequently, low concentration in edible plant parts. Plants have evolved sophisticated mechanisms to alleviate iron deficiency, with the aim of recalibrating metabolic fluxes and maintaining cellular iron homeostasis. An integrated analysis of changes in the transcriptome, proteome, post-translational modifications and pre-mRNA splicing patterns revealed novel components and potential signaling mechanisms that adapt plants to low iron availability. It is concluded that gene activity is dictated by multi-layered regulatory mechanisms that allow for a composition of functional components that is adjusted to the prevailing conditions.
Contact : Jean-François Briat