Obiettivo Plant development is highly plastic, with major variations in form determined by the environment. An excellent example is shoot branching, where the body plan of the shoot system conferred by one genotype can range from a single unbranched stem, to a highly ramified bush, depending on the growth conditions. In recent years we have investigated the hormonal network that allows environmentally sensitive changes in shoot branching in Arabidopsis. Through the analysis of a set of monogenic mutants with clear effects on both the number of shoot branches produced and on its responsiveness to environmental inputs, we have developed a model for shoot branching control involving interactions between three systemically transported plant hormones. In collaboration with Prusinkiewicz (Calgary), we have built a computational implementation of this model, which captures the phenotypes of wild-type plants and, through the manipulation of single biologically plausible model parameters, our mutant phenotypes. While there is still much to learn about individual network components, the mechanistic framework we have established is sufficiently well developed to allow network-level investigation. We therefore propose an ambitious project to use natural allelic variation in shoot branching and its environmental sensitivity as in vivo differently parameterized versions of the shoot branching regulatory network, which can be compared with parameter space exploration in our computational model. By investigating the properties of shoot branching in diverse genotypes and in the computational model parameter space, we will identify trait correlations that will contribute to understanding the architecture of the regulatory network. This approach will simultaneously test the validity of our current model and provide new hypotheses for investigation. Furthermore, the rapidly moving genomics tools available in Arabidopsis will allow us to elucidate the genetic basis for key network properties. Campo scientifico natural sciencesbiological sciencesgeneticsnatural sciencesphysical sciencesastronomyspace exploration Programma(i) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Argomento(i) ERC-AG-LS3 - ERC Advanced Grant - Cellular and Developmental Biology Invito a presentare proposte ERC-2011-ADG_20110310 Vedi altri progetti per questo bando Meccanismo di finanziamento ERC-AG - ERC Advanced Grant Istituzione ospitante THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE Contributo UE € 2 483 870,00 Indirizzo TRINITY LANE THE OLD SCHOOLS CB2 1TN Cambridge Regno Unito Mostra sulla mappa Regione East of England East Anglia Cambridgeshire CC Tipo di attività Higher or Secondary Education Establishments Ricercatore principale Henrietta Leyser Day (Prof.) Contatto amministrativo Renata Schaeffer (Ms.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato Beneficiari (1) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE Regno Unito Contributo UE € 2 483 870,00 Indirizzo TRINITY LANE THE OLD SCHOOLS CB2 1TN Cambridge Mostra sulla mappa Regione East of England East Anglia Cambridgeshire CC Tipo di attività Higher or Secondary Education Establishments Ricercatore principale Henrietta Leyser Day (Prof.) Contatto amministrativo Renata Schaeffer (Ms.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato
