Hexavalent chromium-resistant bacteria isolated from river sediments

Luli, G W; Talnagi, J.W.; Strohl, William R.; Pfister, Robert M.

doi:10.1128/aem.46.4.846-854.1983

Cited by 73 publications

(16 citation statements)

References 26 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…T h e highest incidence of metal antibiotic double resistance exists between: zinc and ampicillin (50°/o); lead and all antibiotics (10Oo/o); copper and penicillin (95%); cobalt and ampicillin (50%); cadmium and erythromycin (25.9%); nickel and ampicillin (83.3%); mercury and bacitracin (73.7%); and finally arsenic and gentamicin (81.5%). T h e resistance to a particular heavy metal has been correlated to antibiotics and other heavy metal resistance in a variety of organisms (Austin and Colwell 1977;Luli et al 1983) and the role of plasmids in confering resistance to both antibiotics and metals has been previously demonstrated (Foster 1983;Lyon and Skurray 1987).…”

Section: Antibiotic Resistancementioning

confidence: 99%

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

Sabry¹,

Ghozlan²,

Abou-Zeid³

1997

J Appl Microbiol

View full text Add to dashboard Cite

The total aerobic heterotrophic and metal-resistant bacterial communities were studied in marine water. The resistance patterns, expressed as MICs, for 81 bacterial isolates to eight heavy metals were surveyed by using the agar dilution method. A great proportion of the isolates were sensitive to cadmium (99%), mercury (91%), zinc (84%) and cobalt (83%). On the other hand, 94%, 40%, 35% and 22% were resistant to lead, nickel, arsenate and copper, respectively. The majority of the tested strains (95.06%) were multiple metal-resistant, with pentametal resistance as the major pattern (25.9%). The response of the isolates to 11 tested antibiotics was tested and ranged from complete resistance to total sensitivity and multiple antibiotic resistance was exhibited by 70.38% 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%).

show abstract

Section: Antibiotic Resistancementioning

confidence: 99%

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

Sabry¹,

Ghozlan²,

Abou-Zeid³

1997

J Appl Microbiol

View full text Add to dashboard Cite

show abstract

“…An increase in the tolerant fraction vis-a-vis a heavy metal has been reported in a number of studies on the effect of heavy metal addition in soil microcosms 5,6,16,19,29,30,32) and heavy metal polluted environments 11,14,18,27,31) . Díaz-Ravińa et al 6) for example, examined the development of metal tolerance in soil bacterial communities exposed to different heavy metals (Cu, Cd, Zn, Ni, and Pb) under laboratory conditions by thymidine incorporation and plate count tech-niques.…”

Section: Discussionmentioning

confidence: 82%

“…ple, Cr 16) , Cu 38) , and Hg 30) contamination. The Tl-tolerant bacteria isolated in this study were identified as several groups in the Alphaproteobacteria, Pseudomonas, and Bacillus (Fig.…”

Section: Discussionmentioning

confidence: 98%

See 1 more Smart Citation

Isolation and Characterization of Thallium-tolerant Bacteria from Heavy Metal-polluted River Sediment and Non-polluted Soils

et al. 2006

View full text Add to dashboard Cite

Thallium (Tl) is a heavy metal found in trace amounts in the earth's crust and has been studied to a much lesser degree than other heavy metals. Since the discovery of high-temperature superconducting components in the Tl-Ca-Ba-Cu-O system, Tl has attracted greater attention as a potential major pollution source of the future. In this study, the response of soil culturable bacterial communities to the addition of Tl was examined with fresh samples of non-polluted garden and arable soils. A preserved air-dried sample from heavy metal-polluted river sediment was also used as a reference. Soil suspension experiments were performed to homogenize the soils to evenly distribute both the microbial populations and Tl and reduce spatial variability. From soil suspensions loaded with Tl at 0.24 to 0.98 mM, bacteria tolerant to 0.49 mM Tl (100 mg Tl l −1 ) were isolated and characterized phylogenetically. The background level of culturable Tl-tolerant bacterial populations was 0.0003-0.013% for the non-polluted soils. The Tl-tolerant fraction increased rapidly in response to Tl loading and dominated the bacterial community, which might be attributed mainly to an immediate effect due to the death of Tl-sensitive microorganisms and leaking of nutrients from cell lysis of sensitive species supporting the growth of primarily Tl-tolerant heterotrophs. Such Tl-tolerant culturable bacteria were isolated and classified into 9 groups of Alphaproteobacteria, those from the arable soil were identified as Pseudomonas spp., and those from the contaminated river sediment were identified as Bacillus niacini.

show abstract

“…Resistance of the bacterial isolates to varying concentrations of zinc was determined by agar dilution method [ 16 ] . Fresh overnight cultures of the isolates grown in peptone water were aseptically inoculated into nutrient agar plates, which were supplemented with increasing concentration of zinc metal ions (500 m g/ml-1.5 mg/ ml).…”

Section: Bacterial Zinc Resistance Testmentioning

confidence: 99%

Bioremediation of Zinc Using Bacillus sp. Isolated from Metal-Contaminated Industrial Zone

Krishna

Varghese

Babu

et al. 2012

Prospects in Bioscience: Addressing the Issues

View full text Add to dashboard Cite

The production of heavy metals has increased quickly since the industrial revolution. Heavy metals frequently form compounds that can be toxic, carcinogenic, or mutagenic, even in very small concentrations. The usual techniques of removing metals from wastewaters are in general expensive and have many restrictions. Alternative methods of metal removal and recovery based on biological materials have been measured. Among various agents, the use of microbes for the removal of metals from industrial and municipal wastewater has been proposed as a promising alternative to conventional heavy metal management strategies in past decades. Thus, the present study aims to isolate and characterize bacteria from soil, sediment, and waters of metal-contaminated industrial area to study the zinc resistance patterns and the zinc bioaccumulation potential of the selected microorganism. Zinc analysis of the samples revealed that concentrations varying from 39.832 m g/L to 310.24 m g/L in water, 12.81 m g/g to 407.53 m g/g in soil, and 81.06 m g/g to 829.54 m g/g in sediment are present. Bacterial zinc resistance study showed that tolerance to Zn was relatively low (<500 m g/ml). Ten bacterial genera were represented in soil and 11 from water, while only 5 bacterial genera were recorded from sediment samples. Bacillus, Pseudomonas , and Enterobacter were found in soil, sediment, and water samples. Highly zincresistant Bacillus sp. was selected for zinc removal experiment. Zinc removal studies revealed that at pH 5 about 40% reduction occurs; at pH 7, 25% occurs; and at pH 9, 50% occurs. Relatively an increased removal of Zinc was observed in the fi rst day of the experiment by Bacillus sp. The metal bioaccumulative potential of the selected isolates may have possible applications in the removal and recovery of zinc from industrial ef fl uents.

show abstract

Hexavalent chromium-resistant bacteria isolated from river sediments

Cited by 73 publications

References 26 publications

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

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

Isolation and Characterization of Thallium-tolerant Bacteria from Heavy Metal-polluted River Sediment and Non-polluted Soils

Bioremediation of Zinc Using Bacillus sp. Isolated from Metal-Contaminated Industrial Zone

Contact Info

Product

Resources

About