Écologie des bactéries N2O réductrices dans les sols agricoles

Ecology of N2O reducers in arable soils

• Auteur / Autrice : Luiz Domeignoz Horta
• Direction : Laurent Philippot, Aymé Spor
• Type : Projet de thèse
• Discipline(s) : Biologie des populations et écologie
• Date : Inscription en doctorat le 01/10/2013
• Etablissement(s) : Bourgogne Franche-Comté
• Ecole(s) doctorale(s) : École doctorale Environnements, Santé (Dijon ; Besançon ; 2012-....)
• Partenaire(s) de recherche : Laboratoire : Agroécologie (Dijon)

Mots clés

Mots clés libres

Microbiologie

Cycle d'azote

Denitrification

NosZ gene

Microbiology

Nitrogen cycling

Denitrification

NosZ gene

Résumé

Within the NORA project, which aims to increase the understanding of biological processes that lead to emissions of N2O, my project will specifically address how the ecology of the functional microbial communities can affect the emissions of N2O. Indeed, previous studies suggest that the phylogenetic diversity and composition of the denitrifier community can explain partly the soil capacity to reduce N2O emissions. For example, targeting the nosZ gene, the relative abundance of the two phyilogenetically different groups proved to influence the N2O sink capacity. The PhD project will include gas chromatography, metagenomics, metatranscriptomics, bioinformatics and advanced statistical analyses.