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Abstract:

Diesel is a widely distributed pollutant. Bioremediation of this kind of compounds requires the use of microorganisms able to survive and adapt to contaminated environments. Pseudomonas extremaustralis is an Antarctic bacterium with a remarkable survival capability associated to polyhydroxyalkanoates (PHAs) production. This strain was used to investigate the effect of cell growth conditions-in biofilm versus shaken flask cultures-as well as the inocula characteristics associated with PHAs accumulation, on diesel degradation. Biofilms showed increased cell growth, biosurfactant production and diesel degradation compared with that obtained in shaken flask cultures. PHA accumulation decreased biofilm cell attachment and enhanced biosurfactant production. Degradation of long-chain and branched alkanes was observed in biofilms, while in shaken flasks only medium-chain length alkanes were degraded. This work shows that the PHA accumulating bacterium P. extremaustralis can be a good candidate to be used as hydrocarbon bioremediation agent, especially in extreme environments. © 2012 Springer Science+Business Media B.V.

Registro:

Documento: Artículo
Título:Biofilm lifestyle enhances diesel bioremediation and biosurfactant production in the Antarctic polyhydroxyalkanoate producer Pseudomonas extremaustralis
Autor:Tribelli, P.M.; Di Martino, C.; López, N.I.; Raiger Iustman, L.J.
Filiación:Dpto. de Qca. Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Guiraldes 2160 Pab 2 Piso 4., Buenos Aires, Argentina
Palabras clave:Biofilm; Biosurfactant production; Diesel bioremediation; Polyhydroxyalkanoates; Pseudomonas; Antarctic bacteria; Biofilm cells; Biosurfactant production; Branched alkanes; Contaminated environment; Extreme environment; Flask culture; Hydrocarbon bioremediation; Inocula; Poly-hydroxyalkanoate; Polyhydroxyalkanoates; Pseudomonas; Bacteria; Biomolecules; Bioremediation; Biotechnology; Bottles; Cell culture; Cell growth; Degradation; Growth kinetics; Paraffins; Pollution; Surface active agents; Biofilms; alkane; carbon; gasoline; polyhydroxyalkanoic acid; surfactant; alkane; bacterium; biofilm; biogenic material; bioremediation; biotechnology; cytology; diesel; ester; industrial production; microbial activity; pollution tolerance; polymer; surfactant; survivorship; Antarctica; article; bacterial gene; biofilm; bioremediation; biosynthesis; drug effect; genetics; growth, development and aging; metabolism; microbiology; phylogeny; physiology; Pseudomonas; surface tension; Alkanes; Antarctic Regions; Biodegradation, Environmental; Biofilms; Carbon; Gasoline; Genes, Bacterial; Phylogeny; Polyhydroxyalkanoates; Pseudomonas; Surface Tension; Surface-Active Agents; Bacteria (microorganisms); Pseudomonas
Año:2012
Volumen:23
Número:5
Página de inicio:645
Página de fin:651
DOI: http://dx.doi.org/10.1007/s10532-012-9540-2
Título revista:Biodegradation
Título revista abreviado:Biodegradation
ISSN:09239820
CODEN:BIODE
CAS:carbon, 7440-44-0; gasoline, 86290-81-5; Alkanes; Carbon, 7440-44-0; Gasoline; Polyhydroxyalkanoates; Surface-Active Agents
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09239820_v23_n5_p645_Tribelli

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Citas:

---------- APA ----------
Tribelli, P.M., Di Martino, C., López, N.I. & Raiger Iustman, L.J. (2012) . Biofilm lifestyle enhances diesel bioremediation and biosurfactant production in the Antarctic polyhydroxyalkanoate producer Pseudomonas extremaustralis. Biodegradation, 23(5), 645-651.
http://dx.doi.org/10.1007/s10532-012-9540-2
---------- CHICAGO ----------
Tribelli, P.M., Di Martino, C., López, N.I., Raiger Iustman, L.J. "Biofilm lifestyle enhances diesel bioremediation and biosurfactant production in the Antarctic polyhydroxyalkanoate producer Pseudomonas extremaustralis" . Biodegradation 23, no. 5 (2012) : 645-651.
http://dx.doi.org/10.1007/s10532-012-9540-2
---------- MLA ----------
Tribelli, P.M., Di Martino, C., López, N.I., Raiger Iustman, L.J. "Biofilm lifestyle enhances diesel bioremediation and biosurfactant production in the Antarctic polyhydroxyalkanoate producer Pseudomonas extremaustralis" . Biodegradation, vol. 23, no. 5, 2012, pp. 645-651.
http://dx.doi.org/10.1007/s10532-012-9540-2
---------- VANCOUVER ----------
Tribelli, P.M., Di Martino, C., López, N.I., Raiger Iustman, L.J. Biofilm lifestyle enhances diesel bioremediation and biosurfactant production in the Antarctic polyhydroxyalkanoate producer Pseudomonas extremaustralis. Biodegradation. 2012;23(5):645-651.
http://dx.doi.org/10.1007/s10532-012-9540-2