%0 Journal Article
%T Management of Microbial Communities through Transient Disturbances Enhances the Functional Resilience of Nitrifying Gas-Biofilters to Future Disturbances
%+ Pontificia Universidad Católica de Valparaíso (PUCV)
%+ Laboratoire de Génie de l'Environnement Industriel (LGEI)
%+ Veolia Environnement
%+ Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM)
%+ Lab Microbial Ecol & Technol LabMET
%A Cabrol, Léa
%A Poly, Franck
%A Malhautier, Luc
%A Pommier, Thomas
%A Lerondelle, Catherine
%A Verstraete, Willy
%A Lepeuple, Anne-Sophie
%A Fanlo, Jean-Louis
%A Le Roux, Xavier
%Z Veolia Environnement Recherche et Innovation (VERI), Maisons Laffitte, France through ANRT agreement CIFRE [2006/497] ; Veolia Environnement Recherche et Innovation (VERI), Maisons Laffitte, France through a 'Contrat de Cooperation dans le Cadre d'Etudes et de Recherches' established in 2006 between Veolia, LEM-CNRS and ARMINES-EMA
%< avec comité de lecture
%@ 0013-936X
%J Environmental Science and Technology
%I American Chemical Society
%V 50
%N 1
%P 338-48
%8 2016
%D 2016
%R 10.1021/acs.est.5b02740
%M 26651080
%Z Environmental Sciences/Biodiversity and Ecology
%Z Environmental Sciences/Global Changes
%Z Environmental Sciences/Environmental Engineering
%Z Life Sciences [q-bio]/Biotechnology
%Z Life Sciences [q-bio]/Microbiology and Parasitology/BacteriologyJournal articles
%X Microbial communities have a key role for the performance of engineered ecosystems such as waste gas biofilters. Maintaining constant performance despite fluctuating environmental conditions is of prime interest, but it is highly challenging because the mechanisms that drive the response of microbial communities to disturbances still have to be disentangled. Here we demonstrate that the bioprocess performance and stability can be improved and reinforced in the face of disturbances, through a rationally predefined strategy of microbial resource management (MRM). This strategy was experimentally validated in replicated pilot-scale nitrifying gas-biofilters, for the two steps of nitrification. The associated biological mechanisms were unraveled through analysis of functions, abundances and community compositions for the major actors of nitrification in these biofilters, that is, ammonia-oxidizing bacteria (AOB) and Nitrobacter-like nitrite-oxidizers (NOB). Our MRM strategy, based on the application of successive, transient perturbations of increasing intensity, enabled to steer the nitrifier community in a favorable way through the selection of more resistant AOB and NOB sharing functional gene sequences close to those of, respectively, Nitrosomonas eutropha and Nitrobacter hamburgensis that are well adapted to high N load. The induced community shifts resulted in significant enhancement of nitrification resilience capacity following the intense perturbation.
%G English
%L hal-01426896
%U https://hal.science/hal-01426896
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%~ UNIV-LYON1
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%~ UNIV-LYON
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