Precipitation of cadmium by Clostridium thermoaceticum

Cunningham, Desmond; Lundie, L L

doi:10.1128/aem.59.1.7-14.1993

Cited by 184 publications

(53 citation statements)

References 48 publications

(41 reference statements)

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“…As a heavy metal, Cd(II) has fatal effects on organisms and is extremely toxic at relatively low dosage (Abou-Shanab et al 2007). Cd(II) can bind to sulfhydryl groups, and disrupt protein function (Cunningham and Lundie 1993;Jungmann et al 1993). Cd(II) is the repressor of thioredoxin which provides reducing power for many biological reactions (Li and Krumholz 2007).…”

Section: Introductionmentioning

confidence: 99%

Enterococcus faecalisstrain LZ-11 isolated from Lanzhou reach of the Yellow River is able to resist and absorb Cadmium

Sun

Liu

et al. 2014

J Appl Microbiol

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Section: Introductionmentioning

confidence: 99%

Enterococcus faecalisstrain LZ-11 isolated from Lanzhou reach of the Yellow River is able to resist and absorb Cadmium

Sun

Liu

et al. 2014

J Appl Microbiol

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“…El-Helow et al [29] found dark stains on the outer cell wall surface of B. thuringiensis grown with Cd 2+ . Cunningham and Lundie [31] detected localized sites of cadmium precipitation on the surfaces of non-starved Clostridium thermoaceticum cells. Roane et al [32] observed cadmium binding by the EPS layer as a dark precipitate surrounding Arthrobacter D9 and Pseudomonas I1A cells, while in Pseudomonas H1 and Bacillus H9, an intracellular accumulation of cadmium was observed.…”

Section: Discussionmentioning

confidence: 99%

Cadmium biosorption by Streptomyces sp. F4 isolated from former uranium mine

Siñeriz

Kothe

Abate

2009

J. Basic Microbiol.

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46 actinomycetes were isolated from two polluted sites and one unpolluted site. One strain, F4, was selected through primary qualitative screening assays because of its cadmium resistance, and physiologically and taxonomically characterized. F4 was able to grow at 7.5% NaCl and 100 microg/ml lysozyme and at a pH between 6 and 10. 16S rDNA sequence analysis showed that F4 was closely related to Streptomyces tendae. Growth of Streptomyces sp. F4 on culture medium with 8 mg/l Cd(2+) for 8 days showed 80% inhibition. Maximum specific biosorption was 41.7 mg Cd(2+)/g dry weight after 7 days of growth and highest Cd(2+ )concentration was found in the cell wall (41.2%). The exopolysaccharide layer only contained 7.4%, whereas 39.4% of Cd(2+) was found in the cytosolic fraction. Twelve % was found in the ribosomes and membrane fraction. This was verified with TEM, showing Streptomyces sp. F4 cytoplasm with dark granulate appearance. This study could present the potential capacity of Streptomyces sp. F4 for Cd(2+) bioremediation.

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“…[ 69 ] Prasad and Jha also synthesized CdS NPs by using Lactobacillus spp., [ 70 ] while Cunningham and Lundie used Clostridium thermoaceticum . [ 71 ] The wilt fungus F. oxysporum was found to mediate the biosynthesis of cadmium selenide NPs. [ 72 ]…”

Section: Microbial Synthesis Of Metal Nanoparticlesmentioning

confidence: 99%

Metal Nanoparticle–Microbe Interactions: Synthesis and Antimicrobial Effects

Khan

Fromm

Rizvi

et al. 2020

Part & Part Syst Charact

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metal solution, reduction of the metal ions leads to the generation of metal atom clustering generating nanosized particles. A characteristic of biosynthetic NPs is their high stability as the organisms provide their own biomolecular capping agent(s). [1] While plant-based production of NPs is now considered a scientific curiosity rather than a promising biotechnology, [2] bacteriamediated NP biosynthesis offers better chances, in light of the poorly characterized microbial diversity and the complex chemistry of enzymes in metal-reducing bacteria. Two recent works focused on directed biofabrication of CdSe-nanoparticles through regulating extracellular electron transfer [3] and the biosynthesis of highly active copper NPs (CuNP) by Shewanella oneidensis. [4] However, the description of molecular mechanism(s) involved in the biosynthesis of NPs has received little attention, which is the focus of this review.The CFCF or culture supernatants (CS) of bacteria mediate the synthesis of AgNPs [5] as presented in this section. The CFCF from the family Enterobacteriaceae reduce silver ions to AgNPs ( Table 1). CFCF of Klebsiella pneumoniae, Escherichia coli, and Metal nanoparticles (NPs), chalcogenides, and carbon quantum dots can be easily synthesized from whole microorganisms (fungi and bacteria) and cell-free sterile filtered spent medium. The particle size distribution and the biosynthesis time can be somewhat controlled through the biomass/metal solution ratio. The biosynthetic mechanism can be explained through the ionreduction theory and UV photoconversion theory. Formation of biosynthetic NPs is part of the detoxification strategy employed by microorganisms, either in planktonic or biofilm form, to reduce the chemical toxicity of metal ions. In fact, most reports on NP biosynthesis show extracellular metal ion reduction. This is important for environmental and industrial applications, particularly in biofilms, as it allows in principle high biosynthetic rates. The antimicrobial and antifungal effect on biosynthetic NPs can be explained in terms of reactive oxygen species and can be enhanced by the capping agents attached to the NP during the biosynthesis process. Industrial applications of NP biosynthesis are still lagging, due to the difficulty of controlling NP size and low titer. Further, the environmental assessment of biosynthetic NPs has not yet been carried out. It is expected that further advancements in biosynthetic NP research will lead to applications, particularly in environmental biotechnology.

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Precipitation of cadmium by Clostridium thermoaceticum

Cited by 184 publications

References 48 publications

Enterococcus faecalisstrain LZ-11 isolated from Lanzhou reach of the Yellow River is able to resist and absorb Cadmium

Enterococcus faecalisstrain LZ-11 isolated from Lanzhou reach of the Yellow River is able to resist and absorb Cadmium

Cadmium biosorption by Streptomyces sp. F4 isolated from former uranium mine

Metal Nanoparticle–Microbe Interactions: Synthesis and Antimicrobial Effects

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