Zinc metal solubilization by Gluconacetobacter diazotrophicus and induction of pleomorphic cells.
J Microbiol Biotechnol
; 17(9): 1477-82, 2007 Sep.
Article
en En
| MEDLINE
| ID: mdl-18062225
ABSTRACT
Gluconacetobacter diazotrophicus strain PAl5 exhibited a minimum inhibitory concentration value of 11 mM in an LGI medium amended with ZnCl2. When an LGI medium was amended with Zn metal, solubilization halos were observed in a plate assay, and further solubilization was confirmed in a broth assay. The maximum solubilization was recorded after 120 h with a 0.1% Zn metal amendment. During solubilization, the culture growth and pH of the broth were indirectly correlated. Using a Fourier Transform Infrared Spectroscopy analysis, one of the agents solubilizing the Zn metal was identified as gluconic acid. When the Zn-amended broth was observed under a bright field microscope, long involution cells were observed, and further analysis with Atomic Force Microscopy revealed highly deformed, pleomorphic, aggregate-like cells.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Zinc
/
Compuestos de Zinc
/
Gluconacetobacter
Idioma:
En
Revista:
J Microbiol Biotechnol
Año:
2007
Tipo del documento:
Article