Publications des scientifiques de l'IRD

Sbabou L., Idir Y., Bruneel Odile, Le Quéré Antoine, Aurag J., Béna Gilles, Filali-Maltouf A. (2016). Characterization of root-nodule bacteria isolated from Hedysarum spinosissimum L, growing in mining sites of Northeastern region of Morocco. SOJ Microbiology and Infectious Diseases, 4 (3), 8 p. [en ligne]. ISSN 2372-0956.

Titre du document
Characterization of root-nodule bacteria isolated from Hedysarum spinosissimum L, growing in mining sites of Northeastern region of Morocco
Année de publication
2016
Type de document
Article
Auteurs
Sbabou L., Idir Y., Bruneel Odile, Le Quéré Antoine, Aurag J., Béna Gilles, Filali-Maltouf A.
Source
SOJ Microbiology and Infectious Diseases, 2016, 4 (3), 8 p. [en ligne] ISSN 2372-0956
The aim of this study was to identify bacteria present in the nodules of the legume Hedysarum spinosissimum growing in metal-contaminated soils; and to test whether these root-nodule bacteria are able to promote host plant growth and enhance their phytostabilization potential. Seventy-four bacteria were isolated from nodules of H. spinosissimum growing in 3 different mining sites in Morocco and were identified by 16S rDNA gene sequencing. They belonged to 8 genera affiliated to Pseudomonas (49 strains), Pantoea (11), Rhizobium (6), Herbaspirillum (3), Bacillus (2), and one strain of Serratia, Agrobacterium and Azospirillum. Seven strains, presenting a high tolerance to Zn and Pb, exhibited capacity of inorganic phosphate solubilization and ammonia production from peptone degradation. The inoculation of H. spinosissimum, growing in 2000 µM of Zn by Pseudomonas putida and Herbaspirillum huttiense suppresses Zn toxicity symptoms in plants and also enhances plant growth by significantly increasing plant shoot and root fresh weights. The maximal Zn accumulation was observed in roots of plants inoculated by Pseudomonas putida with a translocation factor of 0.05(± 0.006). Our results, evidence that the selection of metal-resistant bacteria is a key step in polluted soils for the use of plants like Hedysarum spinosissimum for in situ phytoremediation
Plan de classement
Géochimie [064GEOCHI] ; Nodosités [084SYMBIO01]
Descripteurs
SOL ; POLLUTION ; METAL LOURD ; MINE ; LEGUMINEUSE ; NODULE RACINAIRE ; BACTERIE ; BIODEGRADATION ; DEPOLLUTION ; PHYTOREMEDIATION
Description Géographique
MAROC
Localisation
Fonds IRD [F B010069861]
Identifiant IRD
fdi:010069861
Contact