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Titolo:
Effect of arsenite on the physiological and cytological properties of Pseudomonas putida strains capable of degrading polycyclic aromatic hydrocarbons
Autore:
Kozlova, EV; Suzina, NE; Karpov, AV; Duda, VI; Boronin, AM;
Indirizzi:
Russian Acad Sci, Skryabin Inst Biochem & Physiol Microorganisms, Pushchino Russian Acad Sci Pushchino Moscow Oblast Russia 142292 ganisms, Pushchino
Titolo Testata:
MICROBIOLOGY
fascicolo: 2, volume: 68, anno: 1999,
pagine: 146 - 153
SICI:
0026-2617(199903/04)68:2<146:EOAOTP>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLASMID-DETERMINED RESISTANCE; ESCHERICHIA-COLI; ARSENATE; NAPHTHALENE; ANTIMONY; OPERON;
Keywords:
arsenite; resistance; degradation; polycyclic aromatic hydrocarbons (PAHs); Pseudomonas putida;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Kozlova, EV Russian5,cad Sci, Skryabin Inst Biochem & Physiol Microorganisms, Pr Nauki Russian Acad Sci Pr Nauki 5 Pushchino Moscow Oblast Russia 142292
Citazione:
E.V. Kozlova et al., "Effect of arsenite on the physiological and cytological properties of Pseudomonas putida strains capable of degrading polycyclic aromatic hydrocarbons", MICROBIOLOG, 68(2), 1999, pp. 146-153

Abstract

Some physiological and cytological properties of Pseudomonas putida strains resistant to arsenite and capable of degrading polycyclic aromatic hydrocarbons were studied. The resistance of P. putida BS202 (NPL-1) to arsenite proved to be determined by chromosomal genes, while the arsenite resistanceof P. putida BS238 (pBS2; pBS3031), by plasmid-borne genes. Arsenite affected the pattern and rate of growth of strain BS202 (NPL-I) in media with naphthalene or salicylate as carbon sources; particularly, it lengthened the lag phase. Electron-microscopic analysis of the strains studied did not reveal any arsenite-induced destructive changes in the cell envelope. At the same time, arsenite in the growth medium induced some alterations in the structure of the outer membrane of strain BS202 (NPL-I) and the cytoplasmic membrane of strain BS238 (pBS2; pBS3031) and, in both strains, led to an increase in the density of intramembrane particles on the EF face of the freeze-fractured cytoplasmic membrane. Arsenite resistance evidently protects cells of both strains from greater damage. Physiological and cytological data suggest that the mechanisms of arsenite resistance in the strains studied are different.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/08/20 alle ore 22:40:06