Isolation of free-living dinitrogen-fixing bacteria and their activity in compost containing de-inking paper sludge

Auteur(s): Beauchamp, Chantal Jeanne; Lévesque, Gabriel; Prévost, Danielle; Chalifour, François-Philippe
Résumé: Knowledge of the microbiology of dinitrogen (N2)-fixing bacteria in compost rich in de-inking paper sludge (DPS) is limited. Dinitrogen (N2)-fixing bacteria from DPS composts were isolated and studied for their N2-fixing activity in vitro and in vivo. Two Gram-negative N2-fixing isolates were identified as Pseudomonas. At 20 C, both isolates revealed that N2-fixing activity was higher than that of three arctic Pseudomonas strains. Their N2-fixing activity was found to occur between 18 and 25 C, a pattern that was similar to the reference isolate Azotobacter ATCC 7486. Composts successfully showed N2-fixing activity after carbohydrate amendments both with and without inoculation of a N2-fixing isolate. These results suggest that DPS composts support N2-fixing bacteria and that N2-fixing activity is dependent on a usable carbohydrate source. 2005 Elsevier Ltd. All rights reserved.
Type de document: Article de recherche
Date de publication: 1 mai 2006
Date de la mise en libre accès: 16 mars 2016
Version du document: AM
Lien permanent: http://hdl.handle.net/20.500.11794/350
Ce document a été publié dans: Bioresource technology, Vol. 97 (8), 1002–1011 (2006)
https://doi.org/10.1016/j.biortech.2005.04.041
Elsevier
Autre version disponible: 10.1016/j.biortech.2005.04.041
Collection :Articles publiés dans des revues avec comité de lecture

Fichier(s) :
Description TailleFormat 
Beauchamp al 2006 BioresTechnol 97 1002.pdf452.05 kBAdobe PDFMiniature
Télécharger
Bact_Nfix_2006_BR_97_1002-1011.pdf
Version of Record305.11 kBAdobe PDF    Demander une copie
Tous les documents dans CorpusUL sont protégés par la Loi sur le droit d'auteur du Canada.