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Effect of humic fractions and clay on biodegradation of phenanthrene by a Pseudomonas fluorescens strain isolated from soil.
- Source :
-
Applied and environmental microbiology [Appl Environ Microbiol] 1998 Aug; Vol. 64 (8), pp. 3123-6. - Publication Year :
- 1998
-
Abstract
- The mineralization of phenanthrene in pure cultures of a Pseudomonas fluorescens strain, isolated from soil, was measured in the presence of soil humic fractions and montmorillonite. Humic acid and clay, either separately or in combination, shortened the acclimation phase. A higher mineralization rate was measured in treatments with humic acid at 100 microg/ml. Humic acid at 10 microg/ml stimulated the transformation only in the presence of 10 g of clay per liter. We suggest that sorption of phenanthrene to these soil components may result in a higher concentration of substrate in the vicinity of the bacterial cells and therefore may increase its bioavailability.
Details
- Language :
- English
- ISSN :
- 0099-2240
- Volume :
- 64
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- Applied and environmental microbiology
- Publication Type :
- Academic Journal
- Accession number :
- 9687489
- Full Text :
- https://doi.org/10.1128/AEM.64.8.3123-3126.1998