Metal tolerance and antibiotic resistance patterns of a bacterial population isolated from sea water

Sabry, Soraya A.; Ghozlan, Hanan A.; Abou-Zeid, D.-M.

doi:10.1111/j.1365-2672.1997.tb03580.x

Cited by 43 publications

(38 citation statements)

References 25 publications

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“…Fig. 2 The growth curves of resistant strain E. coli ASU 7 to Cr 6+ (A), Cr 3+ (B) and sensitive strain E. coli DHa5 to Cr 6+ (C), Cr 3+ (D) at different concentration grown in tris minimal medium at 37°C with agitation at 150 rpm for 12 h. Heavy metals were added after 3 h of incubations environmental isolates are resistant to a wide array of antibiotics and there are correlation between heavy metal resistance and antibiotic resistance (Bezverbnaya et al 2005;Pal et al 2004;Soltan 2001;Dhakephalker et al 1994;Hassen et al 1998;Ramteke 1997;Sabry et al 1997).…”

Section: Resultsmentioning

confidence: 99%

Heavy Metal Resistant of E. coli Isolated from Wastewater Sites in Assiut City, Egypt

Abskharon

Hassan

El-Rab

et al. 2008

Bull Environ Contam Toxicol

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Twelve isolates of E. coli were isolated from wastewater of El-Malah canal located in Assiut, Egypt and were checked for their heavy metal tolerance. One isolate has tested for its multiple metal resistances and found to be plasmid mediated with molecular weights 27 and 65 kb for hexa- and trivalent chromium. It was identified as E. coli ASU 7. Its minimal inhibitory concentration (MIC) for Cu(2+), Co(2+), Ni(2+), Zn(2+), Cr(6+), Cr(3+), Cd(2+) and Pb(2+) were 1.57, 2.55, 1.7, 9.17, 0.48, 7.69, 4.4 and 3.1 mM, respectively. Growth kinetics was determined under Cr(6+) and Cr(3+) stress. SDS-PAGE of protein profile shows that 10 ppm (0.19 mM) of Cr(6+) induces new protein with molecular weight 23 kDa.

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Section: Resultsmentioning

confidence: 99%

Heavy Metal Resistant of E. coli Isolated from Wastewater Sites in Assiut City, Egypt

Abskharon

Hassan

El-Rab

et al. 2008

Bull Environ Contam Toxicol

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“…Similar bacterial resistance to multiple heavy metals was reported from Providence river and the Narragansett bay (Traxler and Wood 1981). Sabry et al (1997) showed that the response of the isolates to 11 tested antibiotics ranged from complete resistance to total sensitivity and multiple antibiotic resistance was exhibited by 70.4% of the total isolated population The highest incidence of metal-antibiotic double resistance existed between lead and all antibiotics (100%), copper and penicillin (95%) and nickel and ampicillin (83.3%).…”

Section: Discussionmentioning

confidence: 98%

“…This led to the suggestion that in monitoring studies Antarctic organisms may not serve as the basis for global background levels. Sabry et al (1997) observed antibiotic-resistance in metal tolerant marine bacterial population. An increase in the resistant fraction of culturable heterotrophic bacteria in the aquatic ecosystems is due to the growth primarily of the resistant bacteria (Barkay and Olson 1986;Muller et al 2001, Rasmussen andSorensen 1998;.…”

Section: Introductionmentioning

confidence: 96%

Metal and antibiotic-resistance in psychrotrophic bacteria from Antarctic Marine waters

et al. 2006

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In the wake of the findings that Antarctic krills concentrate heavy metals at ppm level, (Yamamoto et al. 1987), the Antarctic waters from the Indian side were examined for the incidence of metal and antibiotic-resistant bacteria during the austral summer (13th Indian Antarctic expedition) along the cruise track extending from 50 degrees S and 18 degrees E to 65 degrees S and 30 degrees E. The bacterial isolates from these waters showed varying degrees of resistance to antibiotics (Chloramphenicol, ampicillin, streptomycin, tetracycline and kanamycin) and metals (K(2)CrO(4), CdCl(2), ZnCl(2) and HgCl(2)) tested. Of the isolates screened, about 29% and 16% were resistant to 100 ppm of cadmium and chromium salt respectively. Tolerance to lower concentration (10 ppm) of mercury (Hg) was observed in 68% of the isolates. Depending on the antibiotics the isolates showed different percentage of resistance. Multiple drug and metal-resistance were observed. High incidence of resistance to both antibiotics and metals were common among the pigmented bacterial isolates. Increased resistance decreased the ability of bacteria to express enzymes. The results reiterate previous findings by other researchers that the waters of southern ocean may not be exempt from the spread of metal and antibiotic-resistance.

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“…Prevalence of such resistance in bacteria to multiple heavy metals has been reported from Providence River, the Narragansett Bay and in Antarctic marine waters (Traxler and Wood 1981;De Souza et al 2006). Sabry et al (1997) showed that the response of the isolates to 11 tested antibiotics ranged from complete resistance to total sensitivity. Besides, their study showed multiple antibiotic resistance in 70% of the total isolates.…”

Section: Discussionmentioning

confidence: 94%

“Trade-off” in Antarctic bacteria: limnetic psychrotrophs concede multiple enzyme expressions for multiple metal resistance

et al. 2007

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The present study examines the metal and antibiotic resistant bacteria in ice and water from lakes east and west of the Indian base camp (Maitri) in Antarctica. The isolates from western and eastern lakes showed distinct geographical differences in properties like metal resistance and enzyme expression. This may be attributed to high organic loading in the lakes on the west of Maitri. However, there was no marked geopraphical distinction in antibiotic resistance between the lakes. Bacteria from the lakes on the eastern side showed resistance to three or more metals including mercury while, those from the western were resistant to only 1-2 metals excluding mercury. Multiple enzyme expression was more pronounced in the lakes on the western side. On the eastern side multiple metal resistance was encountered in bacterial isolates associated with fewer enzyme expressions suggesting a "trade-off". Thus these Antarctic isolates from the east trade their ability to express multiple enzymes for developing resistance to multiple metals including mercury.

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Metal tolerance and antibiotic resistance patterns of a bacterial population isolated from sea water

Cited by 43 publications

References 25 publications

Heavy Metal Resistant of E. coli Isolated from Wastewater Sites in Assiut City, Egypt

Heavy Metal Resistant of E. coli Isolated from Wastewater Sites in Assiut City, Egypt

Metal and antibiotic-resistance in psychrotrophic bacteria from Antarctic Marine waters

“Trade-off” in Antarctic bacteria: limnetic psychrotrophs concede multiple enzyme expressions for multiple metal resistance

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