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Titolo:
ATRAZINE DEGRADATION IN SALINE WASTE-WATER BY PSEUDOMONAS SP STRAIN ADP
Autore:
SHAPIR N; MANDELBAUM RT; GOTTLIEB H;
Indirizzi:
AGR RES ORG,VOLCANI CTR,INST SOILS & WATER IL-50250 BET DAGAN ISRAEL AGR RES ORG,VOLCANI CTR,INST SOILS & WATER IL-50250 BET DAGAN ISRAEL BAR ILAN UNIV,DEPT CHEM IL-52900 RAMAT GAN ISRAEL
Titolo Testata:
Journal of industrial microbiology & biotechnology
fascicolo: 3-4, volume: 20, anno: 1998,
pagine: 153 - 159
Fonte:
ISI
Lingua:
ENG
Soggetto:
ESCHERICHIA-COLI; OSMOTIC-STRESS; GLYCINE BETAINE; HERBICIDE ATRAZINE; COMPATIBLE SOLUTES; HALOPHILIC EUBACTERIA; RHIZOBIUM-MELILOTI; OSMOREGULATION; TREHALOSE; BACTERIA;
Keywords:
ATRAZINE; SALT; INDUSTRIAL WASTE-WATER; WASTE-WATER TREATMENT; PSEUDOMONAS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
48
Recensione:
Indirizzi per estratti:
Citazione:
N. Shapir et al., "ATRAZINE DEGRADATION IN SALINE WASTE-WATER BY PSEUDOMONAS SP STRAIN ADP", Journal of industrial microbiology & biotechnology, 20(3-4), 1998, pp. 153-159

Abstract

Wastewater from atrazine manufacturing plants contains large amounts of residual atrazine and atrazine synthesis products, which must be removed before disposal. One of the obstacles to biological treatment ofthese wastewaters is their high salt content, eg, up to 4% NaCl (w/v), To enable biological treatment, bacteria capable of atrazine mineralization must be adapted to high-salinity conditions, A recently isolated atrazine-degrading bacterium, Pseudomonas sp strain ADP, originallyisolated from contaminated soils was adapted to biodegradation of atrazine at salt concentrations relevant to atrazine manufacturing wastewater. The adaptation mechanism was based on the ability of the bacterium to produce trehalose as its main osmolyte. Trehalose accumulation was confirmed by natural-abundance H-1 NMR spectral analysis, The bacterium synthesized trehalose de novo in the cells, but could not utilizetrehalose added to the growth medium, Interestingly, the bacterium could not produce glycine betaine (a common compatible solute), but addition of 1 mM of glycine betaine to the medium induced salt tolerance, Osmoregulated Pseudomonas sp strain ADP, feeding on citrate decreased the concentration of atrazine in non-sterile authentic wastewater from25 ppm to below 1 ppm in less than 2 days, The results of our study suggest that salt-adapted Pseudomonas sp strain ADP can be used for atrazine degradation in salt-containing wastewater.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 02:36:15