2008
DOI: 10.1007/s00792-008-0147-9
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Membrane fatty acids adaptive profile in the simultaneous presence of arsenic and toluene in Bacillus sp. ORAs2 and Pseudomonas sp. ORAs5 strains

Abstract: Bacillus sp. ORAs2 and Pseudomonas sp. ORAs5, two arsenic-resistant bacterial strains previously isolated from sediments of the Orbetello Lagoon, Italy, were tested for their adaptation to mixed contaminants on the level of membrane fatty acid composition. The two bacterial strains were characterized by high levels of arsenic resistance, and Pseudomonas sp. ORAs5 was also shown to be solvent-tolerant. The bacterial strains were exposed to mixtures of two toxic compounds: arsenic at fixed concentrations and tol… Show more

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Cited by 51 publications
(37 citation statements)
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“…A similar behavior was previously pointed out for two arsenic-resistant bacterial strains, belonging to the genera Bacillus and Pseudomonas, isolated from sediments of the Orbetello Lagoon, where the Gram-positive bacterium showed higher tolerance to the presence of As 3? (Pepi et al 2008).…”
Section: Discussionmentioning
confidence: 99%
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“…A similar behavior was previously pointed out for two arsenic-resistant bacterial strains, belonging to the genera Bacillus and Pseudomonas, isolated from sediments of the Orbetello Lagoon, where the Gram-positive bacterium showed higher tolerance to the presence of As 3? (Pepi et al 2008).…”
Section: Discussionmentioning
confidence: 99%
“…The bacteria continued to grow exponentially but at reduced growth rates. By plotting the relative growth rates against the concentrations of the toxic elements, a direct correlation between the concentration of a compound and its growth-inhibiting effect was observed as previously described (Pepi et al 2008). From these plots, the effective concentrations (EC50) of the metals leading to 50% growth inhibition were calculated and listed in Table 2.…”
Section: Effect Of Metals On Growth Of the Two Isolated Bacteriamentioning
confidence: 92%
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“…Some bacteria developed efficient adaptation mechanisms to survive in the hostile environment (Pepi et al 2008). Such resistant bacteria may play a major role in bioremediation technologies.…”
Section: Introductionmentioning
confidence: 99%
“…S obzirom na to da je kombinovano zagađenje životne sredine aromatičnim ugljovodonicima i metalima veoma često (Deeb i Altalhi, 2009;Pepi et al, 2009), kao i da je opisan inhibitorni efekat teških metala na aktivnost bakterijskih enzima uključenih u katabolizam aromatičnih jedinjenja (Pepi et al, 2008) Da bi se ispitao potencijalni efekat teških metala na rast sojeva u prisustvu aromatičnih jedinjenja kao jedinih izvora ugljenika i energije testirana je sposobnost korišćenja toluena, odnosno naftalena kao supstrata a u prisustvu metala. Pokazano je da su sojevi koji su ispoljili toleranciju na visoke koncentracije teških metala u prisustvu laktata kao izvora ugljenika zadržali tu sposobnost kada je laktat zamenjen toluenom, odnosno naftalenom.…”
Section: Rast Gram-pozitivnih Izolata U Prisustvu Povišenih Koncentraunclassified