Titre
Biocontrol strain Pseudomonas fluorescens CHA0 and its genetically modified derivative with enhanced biocontrol capability exert comparable effects on the structure of a Sinorhizobium meliloti population in a gnotobiotic system
Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Niemann, S.
Auteure/Auteur
Keel, C.
Auteure/Auteur
Pühler, A.
Auteure/Auteur
Selbitschka, W.
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
0178-2762
Statut éditorial
Publié
Date de publication
1997
Volume
25
Numéro
3
Première page
240
Dernière page/numéro d’article
244
Langue
anglais
Résumé
The impact of biocontrol strain Pseudomonas fluorescens CHA0 and of its genetically modified, antibiotic-overproducing derivative CHA0/pME3424 on a reconstructed population of the plant-beneficial Sinorhizobium meliloti bacteria was assessed in gnotobiotic systems. In sterile soil, the final density of the reconstructed S. meliloti population decreased by more than one order of magnitude in the presence of either of the Pseudomonas strains when compared to a control without addition of P. fluorescens. Moreover, there was a change in the proportion of each individual S. meliloti strain within the population. Plant tests also revealed changes in the nodulating S. meliloti population in the presence of strains CHA0 or CHA0/pME3424. In both treatments one S. meliloti strain, f43, was significantly reduced in its root nodule occupancy. Analysis of alfalfa yields showed a slight but statistically significant increase in shoot dry weight when strain CHA0 was added to the reconstructed S. meliloti population whereas no such effect was observed with CHA0/pME3424.
PID Serval
serval:BIB_22CB296516E5
Date de création
2008-02-17T10:52:56.131Z
Date de création dans IRIS
2025-05-20T17:21:05Z