Search results for "Azote"
showing 10 items of 91 documents
Legume inoculants to reduce soil emissions of nitrous oxide
2012
Nitrous oxide (N2O) is a potent greenhouse gas involved in depletion of the ozone layer and mainly arising from the soil and from agricultural activities. Within this framework, INRA teams inoculated soybean plants with natural strains of Rhizobia bacteria. Convincing results regarding the consumption of N2O greenhouse gases were obtained.
Biological nitrogen fixation for the 21st century
1998
The biodiversity of nitrogen-fixing organisms is huge. Taxonomic and phylogenetic research is needed to structure this diversity, to facilitate communication among scientists, and to increase our understanding of the evolution and biology of diazotrophs. Molecular tools for taxonomic and biodiversity studies of diazotrophic rhizobia, frankiae, cyanobacteria and bacilli are presented in sections 2 to 5. Sections 6 to 9 focus on problems with genus and species assignment.
Indicateurs pour l'évaluation de l'impact de produits phytosanitaires sur la composante microbienne de la qualité biologique des sols
2011
National audience
Nodulating symbiotic bacteria and soil quality
2005
Chapitre 9 : Plant microbe interactions and soil quality Partie : 9-2; International audience
Caractérisation des communautés microbiennes dans les technosols construits pour la restauration des friches industrielles
2012
Increasing soil degradation and its consequences on overall ecosystem services urge for restoration strategies. Construction of Technosols through assemblage of treated soil and industrial wastes is an innovative technology for the restoration of polluted land and re-use of industrial by-products. Recent studies have evidenced that Technosols could support ecosystemic services such as primary production but the knowledge about other soil functions, such as biogeochemical cycling, is limited. Due to the significant contribution of microbial communities to soil functioning, this PhD work was carried out to study the effect of the type of Technosol on microbial communities with a focus on func…
Effect of timing of grassland destruction on nitrogen mineralization kinetics.
2007
International audience
Effets de la fertilisation azotée et du choix des espèces/variétés semées sur l’assemblage des communautés. Comment les optimiser pour favoriser la r…
2018
National audience; La nécessaire diminution de l’usage des herbicides et des engrais minéraux dans les systèmes de culture pourrait entraîner le développement d’une flore adventice résiduelle et une compétition accrue pour les ressources, notamment azotées, entre cultures et adventices. L’objectif de cette thèse est d’analyser dans quelle mesure optimiser les techniques de fertilisation azotée et le choix des espèces/variétés cultivées pourrait fournir un levier pour piloter les communautés végétales, afin de favoriser la régulation biologique des adventices par compétition pour l’azote, et ainsi réduire l’usage des herbicides.Un premier volet vise à compléter et paramétrer le modèle FLORSY…
A tale of two stories from the underground: soil microbial diversity and N cycling
2016
International audience; Dr. Laurent Philippot is Director of Research at the French Institute for Agricultural Research (INRA) and is leading a research group at the department of Agroecology in Dijon. He did a sabbatical at Georgia Tech in Atlanta and at the Swedish University of Agricultural Science (SLU) in Uppsala in 2000 and 2009, respectively. His research focuses on bridging microbial community ecology, microbial processes and ecosystem functioning using microbial guilds involved in nitrogen cycling and greenhouse gas. He is serving as Senior Editor of The ISME Journal and as editorial board member for FEMS Microbiology Ecology, Applied and Environmental Microbiology and Frontiers in…
Loss in microbial diversity affects nitrogen cycling in soil
2013
International audience; Microbial communities have a central role in ecosystem processes by driving the Earth's biogeochemical cycles. However, the importance of microbial diversity for ecosystem functioning is still debated. Here, we experimentally manipulated the soil microbial community using a dilution approach to analyze the functional consequences of diversity loss. A trait-centered approach was embraced using the denitrifiers as model guild due to their role in nitrogen cycling, a major ecosystem service. How various diversity metrics related to richness, eveness and phylogenetic diversity of the soil denitrifier community were affected by the removal experiment was assessed by 454 s…
Bridging microbial community ecology and nitrogen cycling in soil
2011
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